THIS WEEK’S TOP CDR HIGHLIGHTS

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COMMERCIAL NEWS

Denmark’s INNO-CCUS launched a DKK 69m call to fund R&D across CO₂ capture, storage, utilization, and CDR (Funds for NGOs)

Graphyte partnered with Coconino County (Arizona) to turn forest waste into carbon pellets for underground storage (AZ Central)

Supercritical signed an exclusive agreement to distribute 10,000 tonnes of Varaha’s Indian distributed biochar credits certified under Isometric’s module (Supercritical)

Microsoft signed a deal for 650,000 CDR credits from BioCirc’s Denmark BECCS project (BioCrc)

Lufthansa Group expanded its climate portfolio to 14 projects, including a multi-year offtake with Deep Sky, Exomad Green and Klim facilitated by Senken (Lufthansa Group)

Mati Carbon launched an open-source platform to share data from its enhanced weathering field trials (Mati Carbon)

Isometric submitted its application to become an authorized Certification Scheme under EU’s CRCF (Isometric)

Abanos sequestered over 1 million kg of biogenic carbon through sustainable material use (CBN Me)

Truecoco Ghana’s Tikobo One project received an A rating from Sylvera (LinkedIn)

EU Carbon Removals Buyers’ Club launched in Brussels to coordinate public-private demand for carbon removals (Carbon Gap)

Carbon to Sea and Prince Albert II Foundation funded two research projects on ocean alkalinity enhancement impacts on marine life (FPA)

South Korea launched a soil carbon sequestration R&D program focusing on biochar and ERW (Korea Bizwire)

Syngular Solutions and Vallourec signed an MoU to develop BECCS and CCUS projects in Brazil (Gas World)

EFM, Mast Reforestation, and Anew Climate issued verified credits from the Henry Creek Reforestation Project (Carbon Herald)

Germany’s Federal Ministry for the Environment launched an initiative to scale high-integrity CDRs in Africa via IKI and GIZ (Carbon Pulse)

UK launched its first certification scheme for biogenic stored carbon (Forestry Journal)

Counteract launched “Carbon Curve,” a tool analyzing sequestration curves and capital intensity of CDR pathways (Counteract)

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RESEARCH PAPERS

Concerns and Questions About Carbon Dioxide Removal Technologies

Authors: Joshua Luczak

Synopsis: This article provides an integrated review of CDR technologies, bringing together technical, scientific, moral, social, and political considerations that are often treated separately in the literature. It highlights key challenges in CDR development and deployment while emphasizing that effective evaluation requires combining physical feasibility with ethical and governance perspectives.

Phytoplankton species determine sediment carbon dioxide removal

Authors: Chen Qiu, Jiandong Zhang, Chunshan Li, Lele Lei, Furun Li, Lijuan Long & Sijun Huang

Synopsis: A new biogeochemical survey revisits the role of marine picocyanobacteria in the ocean’s carbon cycle, focusing on Prochlorococcus and Synechococcus across the South China Sea and Indian Ocean. Using qPCR measurements from water columns and sediment cores, the study finds extremely low abundances in deep waters but substantial presence in surface sediments, with strong lineage-specific differences in export and preservation. While nearly all exported cells are decomposed in surface sediments, the results suggest Prochlorococcus primarily supports nutrient recycling, whereas Synechococcus may contribute more meaningfully to long-term carbon sequestration.

How carbon dioxide removal lost its way: tracing the origin and transformation of the 10-Gt durable CDR target - Preprint

Authors: Rebecca B Neumann

Synopsis: This analysis traces how the widely cited claim that ~10 Gt CO₂ per year of carbon dioxide removal is required by 2050 emerged from IPCC scenario ensembles, where CDR levels are tied to mitigation assumptions rather than fixed temperature targets. It shows that a median-based value was selectively propagated through policy and industry discourse, losing its original conditional context. As a result, CDR is often framed as a prescriptive necessity, with reduced attention to uncertainty, alternative pathways, and the full range of removal approaches, potentially narrowing informed debate on climate strategy.

Three challenges to marine carbon dioxide removal

Authors: Victor Brun, Marine Lecerf, Olivia Le Gouvello, Isabella Reis Costa, et al.

Synopsis: This brief commentary argues that meeting the Paris 1.5 °C target will require both emissions reductions and carbon dioxide removal, including marine-based approaches. It identifies three key barriers to scaling mCDR: significant scientific knowledge gaps, potential ecological and social risks, and insufficient governance frameworks. The authors conclude that, given these uncertainties, mCDR field experiments should remain tightly regulated and focused solely on improving scientific understanding rather than deployment.

Losing out in Land-Based Greenhouse Gas Removal - A critical justice perspective on biochar

Authors: Catherine Price

Synopsis: Drawing on 37 semi-structured interviews with UK-based stakeholders and supporting document analysis, this study examines potential justice implications of scaling biochar as a greenhouse gas removal technology. Using a “multioptic vision” framework, it identifies a range of possible distributive and multispecies injustices linked to biochar production and deployment, while also noting that procedural, recognition, and cosmopolitan justice concerns were not widely raised in the data. The findings suggest that emerging CDR technologies may involve underexplored justice dimensions that are not fully reflected in current stakeholder discourse.

Life cycle greenhouse gas reduction in bioenergy with carbon capture and storage processes for green hydrogen production

Authors: Ha Eun Lee, Jester Lih Jie Ling, See Hoon Lee

Synopsis: This life-cycle assessment examines hydrogen production via bioenergy with carbon capture and storage (BECCS) under grid-connected and self-sufficient configurations. Both systems achieve net-negative emissions, with stronger performance in the self-sufficient setup due to reduced electricity-related impacts. However, results vary across environmental categories, and outcomes are highly sensitive to biogenic carbon assumptions. The study concludes that BECCS hydrogen can deliver negative emissions, but only with clean energy integration and strict biomass management.

Integrated assessment of climate–vegetation trade-offs between carbon sequestration and ozone air quality in China

Authors: Yu Wang, Haomiao Cheng, Tianfang Kang, Jibo Shi & Wentao Han

Synopsis: An integrated modeling study examines how vegetation simultaneously affects carbon sequestration and surface ozone formation through biogenic volatile organic compound emissions. Using coupled land-use, vegetation, and atmospheric chemistry models, it finds that vegetation increases China’s terrestrial carbon sink while also raising ozone concentrations via enhanced BVOC emissions. The results reveal strong spatial heterogeneity, with some regions experiencing trade-offs between carbon gains and air-quality degradation, while others show co-benefits. The study highlights the need for coordinated land-use strategies to balance carbon mitigation and air-quality goals.

Slaking quicklime with seawater for open-ocean alkalinity enhancement: Technical feasibility and cost implications

Authors: Manon Tiphaine Duret, Connor Clark, Kenton Heidel

Synopsis: This study evaluates whether transporting quicklime (CaO) instead of hydrated lime (Ca(OH)₂) could improve the efficiency and cost-effectiveness of OAE via open-ocean liming. Experimental results show that CaO can be effectively slaked using seawater, with similar reactivity to deionized water and limited formation of secondary minerals unlikely to affect alkalinity performance. A transport cost model indicates that onboard slaking of CaO could reduce logistics and handling costs by 4–21% per ton of CO₂ removed. The findings suggest a technically feasible and economically advantageous pathway for scaling OAE deployment.

Direct Air Capture (DAC) Technologies and Subsurface Integration: A Comprehensive Technical Review

Authors: Akshit Agarwal; Yousef Al-Enizi; Cenk Temizel

Synopsis: This review provides a comprehensive overview of DAC technologies, including solid- and liquid-sorbent systems, along with associated energy requirements, sorbent materials, and CO₂ storage options in deep geological formations. It compares technical performance and highlights energy use as the primary cost driver, with current capture costs estimated between $200–600 per ton of CO₂. The paper also examines integration with renewable energy, potential synergies with enhanced oil recovery, and key research gaps such as sorbent durability and long-term storage monitoring.

Forest carbon protocols underestimate climate-driven carbon loss risks

Authors: Chao Wu, Grayson Badgley, Michael L. Goulden, et al.

Synopsis: A large-scale assessment of forest carbon reversal risk in the contiguous United States evaluates how natural disturbances under climate change threaten the permanence of forest-based carbon sinks. Combining forest inventory data, satellite observations, and machine learning, the study finds that rising disturbance risks—especially in California and the Intermountain West—are likely to significantly undermine current carbon storage assumptions. It concludes that existing carbon offset buffer pools are substantially underestimated, potentially by a factor of 2.2 to 8.0, indicating that current accounting frameworks require major revision to remain reliable under future climate conditions.

The efficiency and ocean acidification mitigation potential of ocean alkalinity enhancement on multi-centennial timescales

Authors: Hendrik Grosselindemann, Friedrich A. Burger, and Thomas L. Frölicher

Synopsis: A coupled Earth system model experiment evaluates the long-term effectiveness of OAE under different global warming stabilization pathways. The study finds that sustained alkalinity addition significantly reduces atmospheric CO₂ and provides modest but steady global cooling, with temperature responses largely independent of emission scenarios. While OAE effectively contributes to carbon removal and helps mitigate ocean acidification, its efficiency varies depending on the metric used and declines over time due to carbon cycle feedbacks. The results emphasize that OAE can support climate mitigation but cannot substitute for rapid emissions reductions in meeting Paris Agreement goals.

Interactions between silicate weathering and ectomycorrhiza in severely acidified forests

Authors: Thomas Rombouts, Robrecht Van Der Bauwhede, Matteo Campioli, Håkan Wallander, Judith Sitters & Erik Verbruggen

Synopsis: This study examines how soil acidification from anthropogenic nitrogen deposition disrupts forest ecosystems by reducing the abundance and diversity of ectomycorrhizal (EcM) fungi, which are critical for nutrient uptake, mineral weathering, and soil formation. It evaluates enhanced silicate weathering (ESW) as a slower, potentially more ecologically compatible alternative to conventional liming, emphasizing its interactions with EcM communities. The authors propose a possible positive feedback loop in which ESW supports EcM recovery, which in turn enhances mineral dissolution and nutrient cycling. However, they highlight major uncertainties around microbial-mineral mechanisms, carbon sequestration outcomes, and scalability across ecosystems.

Reversal of the warm Arctic -cold Eurasia intraseasonal coupling by CO2 removal

Authors: M. Inês Cajada, Seok-Woo Son, Ye-Jun Jun, Shih-Yu Simon Wang, Jin-Ho Yoon and Seung-Ki Min

Synopsis: This study investigates whether the weakening of the Warm Arctic–Cold Eurasia (WACE) relationship under greenhouse gas forcing represents an irreversible shift or a reversible response to changing climate conditions. Using a large-ensemble CO₂ ramp-up and ramp-down experiment, the authors find that the WACE coupling weakens as CO₂ increases but largely recovers when concentrations are reduced, indicating reversibility with limited hysteresis during stabilization. These changes are linked to shifts in Eurasian baroclinicity driven by meridional temperature gradients, suggesting that the WACE response reflects a dynamically forced adjustment rather than a permanent change in atmospheric circulation.

Feasible net carbon sink outcomes of China terrestrial ecosystem under economic and ecosystem service constraints

Authors: Boru Su, Moucheng Liu, Tianxiang Hao

Synopsis: This study evaluates the feasibility of enhancing terrestrial carbon sinks in China through ecosystem management (EM) by integrating carbon sequestration potential with economic costs and ecosystem service constraints. It finds that while theoretical carbon sink potential is positive on average, real-world feasibility significantly reduces achievable gains, with some scenarios even showing net negative outcomes under joint constraints. Regional differences in limiting factors—ranging from economic costs to ecosystem service demand—highlight strong spatial variability. The results demonstrate that carbon sink estimates based solely on biophysical potential substantially overstate realistic outcomes, underscoring the importance of feasibility-oriented assessment frameworks.

From Gross to Net: Carbon Dioxide Removal in an Analytic Climate Economy

Authors: Meier F. Quaas, M. Rickels, W. Traeger C.

Synopsis: This study develops an integrated assessment framework to examine the role of CDR under constraints such as limited storage permanence, energy demand, and fossil fuel scarcity. The model shows that introducing CDR does not substantially alter optimal carbon pricing and therefore does not significantly displace emissions reductions. Instead, CDR deployment is primarily constrained by the carbon intensity of energy systems and the availability of low-carbon energy. The results suggest that overshoot pathways may become optimal under certain conditions, with global temperatures peaking earlier when climate damages are high, and highlight the importance of energy system transitions in enabling scalable CDR.

Challenges and opportunities of the full phase-out of fossil fuels under the 1.5 °C goal

Authors: Shotaro Mori, Siddharth Joshi, Volker Krey, Ken Oshiro, Oliver Fricko, Takuya Hara & Shinichiro Fujimori

Synopsis: This study uses two global energy system models to examine pathways for fully phasing out fossil fuels by 2050 in line with COP28 ambitions. It finds that such a transition would require rapid and large-scale electrification, with power generation expanding by 1.6–1.8 times compared to standard cost-effective 1.5 °C scenarios. Achieving this shift would raise cumulative energy investment costs by up to 34% and necessitate accelerated deployment of solar, wind, and electrolysis technologies. While reducing reliance on carbon dioxide removal and improving the likelihood of returning to 1.5 °C after overshoot, the results highlight the substantial structural and financial demands of a full fossil fuel phase-out.

Net CO₂ removal in Korean orchard soils using prunings-derived biochar: effects of pyrolysis type and CH₄ emissions in biochar production stage

Authors: Kyung-Hwa Han, Min-Hyo Lim

Synopsis: This life-cycle assessment evaluates the net carbon dioxide removal potential of a circular biochar system using orchard-pruning residues. Focusing on collection, transport, pyrolysis, and field application stages, the study compares different pyrolysis technologies and methane management strategies. Results indicate that biochar produced at 500°C offers the highest long-term carbon stability, with sequestration potential of 0.66–0.72 t CO₂-eq per ton of dry feedstock. Net removal performance is strongly influenced by moisture content, methane emissions, and system design, with best outcomes achieved through well-dried feedstock and methane-oxidizing pyrolysis systems.

Sustained Neutralization of the Warming Response to Emissions through a Portfolio of GHG Mitigation Strategies - Preprint

Authors: Ella Hughes, Zeke Hausfather, Randall Spock, Christopher Van Arsdale

Synopsis: This paper proposes a time-sensitive accounting framework for net-zero claims that integrates emissions abatement, superpollutant reductions, and carbon dioxide removal across different durability timescales. It argues that current compensation approaches risk overlooking long-term climate impacts by not explicitly tracking how mitigation measures affect temperature over time. To address this, the authors introduce a “sustained warming neutralization” method that translates both emissions and mitigation actions into continuous global mean temperature effects, enabling more consistent evaluation of climate outcomes. The framework is intended to better align corporate mitigation claims with long-term global temperature stabilization goals.

Development of a computable general equilibrium model representing direct air capture and carbon dioxide utilization

Authors: Osamu Nishiura, Shinichiro Fujimori, Ken Oshiro

Synopsis: This study develops a CGE model to evaluate the role of DAC, carbon dioxide storage (DACCS), and synthetic fuel production in achieving a 1.5 °C climate target. Unlike previous IAM approaches, the model explicitly represents DAC-related technologies and their economic interactions. Results suggest that DAC could remove substantial amounts of CO₂ annually while also supplying synthetic fuels, thereby reducing the overall economic burden of emissions mitigation. However, increased reliance on synthetic fuels may raise system costs depending on consumer behavior, highlighting the importance of behavioural and market assumptions in shaping DAC-based mitigation outcomes.

Techno-economic feasibility and life cycle carbon assessment of an integrated bioenergy driven direct air capture for sustainable hydrogen carrier production

Authors: Mahmoud Kiannejad Amiri, Mohammad Moosazadeh, ChangKyoo Yoo

Synopsis: This study presents a Bioenergy-Driven Direct Air Capture (Bio-DAC) system that integrates biomass gasification, liquid-sorbent DAC, and solid-oxide electrolysis to produce carbon-neutral liquid hydrogen carriers. Using process simulation, techno-economic analysis, and life-cycle assessment, the system is shown to capture significant CO₂ while generating high-temperature heat and hydrogen-based chemicals such as formic acid and acetic acid. Results indicate strong economic viability, particularly for formic acid, alongside very low net carbon footprints for both products. However, profitability and environmental performance are sensitive to energy inputs, carbon pricing, and regional conditions, highlighting both the promise and complexity of integrated DAC-based chemical systems.

Olivine-based marine carbon dioxide removal field trial shows no adverse effects on the benthic community - Preprint

Authors: Emilia Jankowska, Matthew Sclafani, M. Grace Andrews, et al.

Synopsis: Field monitoring from a first-of-its-kind marine enhanced rock weathering (mERW) olivine trial evaluates ecological impacts on a New York sandy beach using a BACI design. Abundance and richness recovered within ~2 months; diversity stable; composition shifts likely natural variability. No metal accumulation detected over ~1 year. Overall, no detectable adverse benthic impacts at seasonal scales, though community dynamics show high natural variability.

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WEB POSTS

Five burning questions as a newbie to carbon removal (Terraset)

Can enhanced alkalinity store carbon durably? (Science)

Some technologies use accelerated natural processes to capture carbon – but can they store it durably? (The Conversation)

Personal view from a newcomer in CDR about ERW (Carbon Drawdown)

What is the ‘Like-for-Like’ Approach in Carbon Dioxide Removal? (WRI)

EU Carbon Removal Buyers’ Club is set to become a pillar of Europe’s carbon removal market (Carbon Management Europe)

Emerging opportunities in carbon removal demand (LinkedIn)

Time to Act: Carbon Removal Policy in Ireland (LinkedIn)

Climeworks CEO Says Carbon Removal Can’t Hinge on Microsoft (Bloomberg)

Tech risk in CDR underlines need for innovative financing: panel (QC Intel)

Defining residual emissions and why that matters for corporate net zero (LSE)

SBTi Launches Draft Net-Zero Standard To Expand Corporate Climate Action (ESG News)

What the House FY2027 Energy and Water Development budget means for carbon removal (Carbon180)

Biochar in Concrete: A Circular, Climate-Effective Path for Europe’s Construction Sector (Biochar Europe)

REPORTS

Advancing an EU Carbon Removal Buyers’ Club (Carbon Management Europe)

How Governments are Supporting Marine Carbon Dioxide Removal Around the World (World Ocean Council)

Banking Carbon Removal: From Early Deals to Scalable Finance (World Economic Forum)

Corporate Carbon Removal Purchasing Hinges on Policy Clarity (Carbon Business Council)

Advancing an EU Carbon Removal Buyers’ Club (Carbon Management Europe and Carbon Gap)

2026 Q1 Durable CDR Market Update - From Promise to Proof (CDR.fyi)

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UPCOMING EVENTS

From an emissions source to a carbon storage solution by ecoLocked | 26 May 2026 | Online

Remote sensing of the land biosphere to support quantification of carbon emissions and removals by the EU projects Avengers, Eye-clima & Paris | 26 May 2026 | Online

From an emissions source to a carbon storage solution by Paebbl | 26 May 2026 | Online

mCDR governance under international legal frameworks by Columbia University | 27 May 2026 | Online

(NEW) The role of BECCS within a future European CDR market by CSink | 27 May 2026 | Stockholm, Sweden

Carbon Removal Readiness Assessments - Poland Launch by Carbon Gap | 29 May 2026 | Online

June 2026

Recognition of Certification Schemes for Permanent Carbon Removals under the CRCF Regulation by European Commission | 01 June 2026 | Online

(NEW) Getting ahead of carbon removal regulation in Europe—implications for your CDR strategy by Climeworks | 01 June 2026 | Online

(NEW) Government Responsibility and Carbon Dioxide Removal by Humboldt-Universität | 02 June 2026 | Berlin, Senatssaal

The State of Carbon Dioxide Removal, Edition 3 - Launch by State of Carbon Dioxide Removal | 02 June 2026 | Online

(NEW) Demystifying Diligence - A Workshop for Carbon Removal Credit Buyers by AirMiners | 03 June 2026

TOCW Flagship Event - Carbon Solutions: Canada’s Competitive Edge by Toronto Climate Week | 03 June 2026

C2V Initiative Year 5 Final Showcase by Urban Future Lab & Greentown Boston | 03 June 2026 | United States

Negative Emissions Summit 2026 | 04 June 2026 | Brussels

CO2 removal from the atmosphere – New opportunities for climate protection and innovation | 08 June 2026 | Berlin

(NEW) 4th International Conference on Carbon Dioxide Removal by CMCC Foundation | 10-12 June 2026 | Politecnico di Milano

Reclaiming Hope, Removing Carbon by University of Bristol | 11-14 June 2026

Carbon Drawdown Symposium 2026 by Carbon Drawdown Initiative | 16–17 June 2026 | Online & Hotel Luise, Erlangen

Carbon Removal London 2026 by Supercritical | 22 June 2026 | London

Scaling CDR Summit by Isometric | 23 June 2026 | London, England

(NEW) Who Holds the Risk in Carbon Removal? Rethinking Durability and Liability by American Forest Foundation | 24 June 2026 | San Francisco

(NEW) Carbon dioxide removal: the latest trends and the UK’s edge by University of Oxford at London Climate Action Week 2026 | 24 June 2026 | United Kingdom

Building the CDR market of tomorrow by AlliedOffsets and LSE | 24 June 2026 | London, UK

Symposium on Biomass-Based Carbon Removal by NET-Fuels | 25 June 2026 | Emilia-Romagna

23rd International Conference on Carbon Dioxide Utilization | 6-10 July 2026 | St.Louis, Missouri

(NEW) Fourth Annual Enhanced Rock Weathering Conference by University of Guelph | 08-10 July 2026 | Guelph, Ontario, Canada

Nordic Climate Finance Summit | 3-4 September 2026 | Oslo, Norway

Carbon Removal Policy Summit by Carbon Gap | 16 September 2026 | Brussels

CDR26–CDRANet’s 2026 conference on the future of carbon dioxide removal | 20-21 October 2026 | Vancouver

2026 North American Biochar Conference - Setting the Standard for Biochar by American Biochar Institute | November 16-18, 2026 | New Orleans, Louisiana

Carbon Removal Events Calendar

JOB OPPORTUNITIES

Senior Manager / Director, Communications at Carbon Removal Data | Remote, Canada

“Carbon Removal Canada is an independent non-profit accelerating the responsible scale-up of carbon removal technologies.”

Executive Director – The Global South CDR Coalition at The Global South Carbon Dioxide Removal Coalition | Brussels-based, Part-time

“The European Union has just set a 90% emissions reduction target for 2040 and crucially, left the door open to high-quality international carbon removal credits. For the Global South, which has already delivered 45% of all durable carbon removal globally, this is a defining moment. The question is whether that potential translates into recognised, regulated market access, or gets locked out of the frameworks that will shape climate finance for decades. The Global South CDR Coalition exists to make sure it doesn’t get locked out. Founded in January 2025 and based in Brussels, we are a non-profit business association representing leading CDR credit producers across Latin America, Africa, and Asia, spanning biochar, enhanced rock weathering, and direct air capture. Our mission is to secure the inclusion of high-integrity, Global South carbon removal in European regulated markets and policy frameworks.”

Associate at Milkywire | Stockholm, Hybrid

“Milkywire is an impact firm, delivering market leading solutions within areas such as permanent carbon removal, nature protection and regenerative agriculture.”

Sr. Manufacturing & Commissioning Engineer at Charm Industrial | Fort Lupton, CO

“Charm Industrial’s mission is to return the atmosphere to 280 ppm CO₂. We convert excess inedible biomass into carbon-rich bio-oil and inject it into underground storage for permanent carbon removal.”

Internship - Carbon Portfolio Officer at Removall Carbon | Paris

“Removall is a company specializing in the development and financing of certified carbon projects. We support businesses and organizations in implementing ambitious and rigorous carbon contribution strategies.”

R&D Scientist – Nanomaterial Integration at Atoco

“Atoco, Inc. is a startup company founded by the distinguished scientist Prof. Omar Yaghi, the inventor of MOF and COF chemistry. Atoco is currently working on technologies in the fields of atmospheric water harvesting and CO2 capture.”

Data Scientist 1 at Mati Carbon

“At Mati Carbon, we are building data-driven systems at the intersection of climate science, agriculture, and machine learning. Our work focuses on solving real-world problems in sustainable agriculture using geospatial intelligence, statistical modeling, and scalable data systems.”

Sr. Business Systems Manager (Data and Automation) at Arbor | El Segundo, CA

“At Arbor Energy & Resources Corporation (”Arbor Energy”), we’re creating technology to power our lives while protecting the planet that sustains them. Our advanced power systems deliver clean, reliable baseload electricity with zero operating emissions—modular, fuel-flexible, and engineered for the realities of today’s energy demand. At the core is a supercritical CO₂ turbine with integrated carbon capture, designed to bring carbon-neutral power online quickly at meaningful scale. “

Operations Associate at Patch | San Francisco

“The way the world accounts for, trades, and acts on environmental impact is being rebuilt from the ground up — and Patch is the platform scaling unified climate action at the center of it.”

Climate & Water Initiatives Lead at Crew Carbon | Remote

“CREW is a water technology company providing wastewater treatment facilities with a process intensification solution that improves performance, lowers costs, and permanently removes greenhouse gases.”

Capital Management Associate - Capital Management at 8Rivers | Durham, North Carolina

“8Rivers is developing the sustainable infrastructure of tomorrow by inventing and commercializing large-scale innovations in the race to Net Zero.”

CDRjobs Board

PODCASTS

What kind of leader does my CDR company need me to be?—w/ Julia Reichelstein, Vaulted Deep | Reversing Climate Change

“What do you do when you’re a venture capitalist who can’t stop talking about carbon removal at every meeting? You quit and start a carbon removal company, obviously. Three days later you meet the person who’s been quietly running one of the largest carbon removal operations nobody’s ever heard of. And then you build a company that just signed a nearly 5 million ton deal with Microsoft. That’s... a lot of tons.

Today’s guest is Julia Reichelstein, the co-founder and CEO of Vaulted Deep. They take contaminated organic waste—the stuff nobody else wants, the sludgy, PFAS-laden, moisture-intensive material that’s going to landfills or getting spread on land—and they pump it thousands of feet underground where it stays forever. They don’t compete for nice clean biomass. They take the actual waste, and they get paid to take it. That’s a business model I can get behind.

I wanted to talk to Julia because her origin story is unusual. She didn’t start with a technology and try to commercialize it. She came from venture capital, from international development in Kenya and Ethiopia, from a place of asking “what actually scales?” And when she found deep well disposal through her now co-founder Omar, she recognized immediately that this was both great waste management and great carbon removal—and that the combination was the thing.

But this episode went somewhere I didn’t expect. We got into intuition and gut decisions, into what it means to lead a company from a spiritual place without losing business rigor, into “front of brain” versus “back of brain” and why Julia’s trail runs keep getting longer the more successful Vaulted gets. I brought up the question of whether CEOs who founded their companies can survive the transition to scaling them, and Julia gave one of the best answers I’ve heard: “What does the company need me to be?” Not “how do I shape the company around my strengths”—the other direction entirely.

We also talked about the mechanics of spinning a company out of an existing one, why there aren’t many venture-backed spinoffs (and why that should have told her something), and what it actually looks like to go from two trucks a week to fifty trucks a day.”

LULUCF, Carbon Farming and the CRCF Review - with Asger Strange Olesen | The CDR Policy Scoop

“In this episode of The CDR Policy Scoop, Sebastian Manhart and Eve Tamme welcome back Asger Strange Olesen, Global Head of Climate and Biodiversity at the International Woodland Company and Independent Member of the EU Carbon Removal Expert Group.

The conversation opens on where the carbon farming side of the CRCF stands relative to the momentum building around permanent removals. Asger explains why carbon credits are the wrong tool for the majority of European farmland that stays in production, and why the CRCF review’s emerging concept of performance certificates may finally offer a workable alternative. One that links supply chain companies’ Scope 3 reporting to what actually happens on the land.

The episode digs into how performance certificates would work in practice: who issues them, who needs them, and how attribution across multiple buyers in the same supply chain gets resolved. Asger is direct about which concepts from the carbon credit world have no place here, and why insisting on them would kill the instrument before it starts.

The discussion also covers the tension between the EU’s bottom-up inventory approach and SBTi’s top-down FLAG methodology, what the Q4 Commission proposal on national targets and flexibilities needs to get right, and why moving the obligation to pay from member states to sectors and companies is the single most important precondition for any of this to work.”

Live from Brussels: Does the EU Buyers’ Club Have What it Takes? | The CDR Policy Scoop

“Recorded on the ground at the first annual CRCF Days in Brussels, Eve Tamme and Sebastian Manhart spent the day inside Day One on permanent carbon removals and caught up throughout the day to give you a front-row view of how it unfolded.

The episode follows the arc of the day to tackle the central question: does the EU Buyers’ Club have the momentum, the money, and the buyers to actually deliver? Eve and Sebastian arrive with different expectations and leave with a revealing disagreement. Surprisingly, Eve is more bullish than usual and Sebastian is more measured. However both agree the room had real energy with over 200 in person and 300 online, and that the process of getting buyers together under Commission convening is worth something in itself.

The momentum in the room was real but whether it translates into offtake agreements, new buyers, and genuine scale is a different question. Eve and Sebastian get into what was actually announced, which technologies are in or out of scope, and why use cases for permanent removals keep coming up and keep going unanswered.”

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YOUTUBE VIDEOS

“Negative emissions” included in emissions scenarios, massive CDR needed to reach climate goals | Climate Chat

“Climate Chat conversation with Detlef van Vuuren about new emission scenarios to be used for CMIP7 climate models.”

Durable CDR Market Update Carbon Unbound East Coast May 19 2026 | CDRfyi

“In this Durable CDR Market Update, Alex Rink, Co-founder and CEO of CDR.fyi, presents the latest data and insights on the durable carbon removal market at Carbon Unbound East Coast in New York on May 19, 2026.”

The 2026 Carbon Removal Challenge Winners Showcase | OpenAir

“For the eighth and final webinar in the OpenAir Collective’s 2026 Carbon Removal Challenge monthly webinar series, the winning student teams of this year’s Challenge presented at the Carbon Unbound East Coast Conference in New York City on May 20th. This is a broadcast the recording of their presentations.”

CSEi Seminar Featuring Liam Bullock (Geological and Mining Institute of Spain) | UChicago Climate Systems Engineering initiative

“Title: Enhanced weathering in industrial, rural and urban settings for atmospheric CO2 removal

This talk explores how enhanced weathering of silicate rocks can be deployed across industrial, rural, and urban settings to remove carbon dioxide from the atmosphere at meaningful scale.”

Is It Too Late? Geoengineering, Sea Level Rise & the Future of Our Planet | Business Talk

“In this episode of Business Talk, we welcome Dr. John Colin Mutter, Professor at Columbia University with dual appointments in the Department of Earth and Environmental Sciences and the School of International and Public Affairs (SIPA), to explore the core ideas from his acclaimed book, Climate Change Science: A Primer for Sustainable Development. Written to bridge the gap between climate science and policy, the book presents the “essential canon” of climate knowledge that non-scientists, students, and policymakers need to understand before entering debates on climate action.

In this conversation, Dr. Mutter unpacks the science behind sea level rise and its uneven regional impact, explains why future hurricanes may be fewer but far more intense, and distinguishes between scientific uncertainty and the greater challenge of predicting human behavior around energy transitions. He also introduces two critical additions in the second edition, attribution science, which uses statistical methods to assess how much climate change influences specific extreme weather events, and a new chapter on geoengineering approaches such as Solar Radiation Management and Direct Air Capture, each carrying vastly different risk profiles.”

Webinar - M ICR017 Integrated Direct Air Capture and Microalgae Carbon Removal Methodology | International Carbon Registry

The New Calculus for Climate Economy: Menggali Potensi Indonesia dalam Carbon Removal | kumparan

“Decarbonization and industrial growth have long been considered incompatible. However, a new approach to global climate economics now offers developing countries the opportunity to prove otherwise. Indonesia, with its rich natural resources and innovation ecosystem, is strategically positioned to lead this change. The MIT Kuo Sharper Center held the second session of the Indonesia Series 2026, bringing together leaders from the worlds of policy, academia, and entrepreneurship to formulate concrete steps for Indonesia to lead global carbon removal without sacrificing industrial competitiveness.”

Financing Carbon Removal From Contracts to Delivery: The Next Trillion-Dollar Market | InPlanet - Measurable. Scalable. Certified Credits

“Carbon removal is no longer constrained by demand, it’s constrained by liquidity and delivery certainty.

During this private lunch hosted by InPlanet and CUR8, buyers, investors, suppliers, and finance leaders came together for an in-depth discussion on one of the biggest challenges in the carbon removal market today:

How do we ensure signed carbon removal contracts actually turn into delivered tonnes?”

Inside One of the Biggest Carbon Removal Projects of the Year | Mast Reforestation

“In 2025, we completed a massive carbon removal project and buried more than ten million pounds of trees in Montana. Burned trees were precisely measured, compacted, and buried in engineered chambers to lock carbon underground for more than a century, instead of letting it float into the atmosphere. This process helps to reduce emissions, prevent future fires, and restore forests faster.”

Jos Cozijnsen - The EU ETS Is Here to Stay: The MSR Debate, Price Controls, and the 2040 | Climate Economics with Arvid Viaene

“The EU ETS is up for review again in 2026, but the debate is noisy: volatile permit prices, politically sensitive energy costs, and lots of claims about whether the system is being “weakened” or “strengthened.”

If you listened to the two-part EU ETS primer with Professor Edwin Woerdman, this episode is the real-time application: what’s actually happening inside EU climate policy right now.

My guest is Jos Cozijnsen, a Dutch lawyer and long-time expert on carbon markets and international climate policy. He has worked on emissions trading since the 1990s, including the Kyoto era, and remains closely involved in today’s debates on ETS design, Article 6, and carbon markets.”

Demystifying Diligence - A Workshop for Carbon Removal Credit Buyers | Tito - AirMiners

Playlist - Annual Convening 2026 | Carbon to Sea

Weekly Carbon Removal Updates from 18 May - 24 May 2026 | Carbon Removal Updates Bulletin

DEADLINES

Deloitte launched an EU survey to design a carbon farming Buyers’ Club under CRCF | Deadline: 26 May 2026

Frontier & Carbon Removal Canada launched a surficial mineralization hub in Quebec | Applications for pilot and research projects are now open, with pre-applications due by 26 May 2026

Carbon Removall launched its 2026 RFP for carbon removal projects | Deadline: 29 May 2026

SICTOM PEZENAS-AGDE in southern France issued a €13.7M biochar facility tender | Submission deadline: 29 May 2026

The UpLink–World Economic Forum Innovation Challenge is open for CDR startups | Applications close 4 June 2026

California Air Resources Board is seeking feedback through June 5, 2026, on draft regulatory concepts for the CCUDS and CDR

Verra opened consultation on improved forest sequestration methodology | Deadline: May 6-8 June 2026

The Clean Energy Ministerial CCUS Initiative and Mission Innovation CDR launched Carbon Management Project Awards for CCUS and CDR projects | Submission deadline: 07 June 2026

The European Commission has opened a consultation on draft CBAM rules that would recognise Article 6 credits when calculating the carbon price paid in exporting countries | Deadline: 10 June 2026

(NEW) Isometric released a draft Improved Soil Management protocol for public consultation | Deadline: 11 June 2026

Wren launched its 2026 RFP, offering up to $500K for ARR, blue carbon, and methane reduction projects | Deadline: 30 June 2026

California Energy Commission opened $11M funding for pre-commercial DAC projects | Deadline July 31, 2026

Call for Proposals: Sweden’s Energy Agency launched a $1B BECCS funding round for CO₂ capture from bioenergy | Deadline: 13 August 2026

Swedish Energy Agency opened 15M SEK funding for negative emissions R&D | Deadline: 31 August 2026

Germany launched €5B Carbon Contracts for Difference program to support CCS and CDR | Tender submission deadline: 07 Sep 2026

Carbon Management journal calls for CDR papers | Deadline: 13 November 2026

Call for Manuscripts | Research Topic: Forest Carbon Sinks: Fluxes and Storage Capacity | 31 January 2027

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1. This Week’s Top CDR Highlights

2. Commercial News

3. Research Papers

4. Web Posts

5. Reports

6. Upcoming Events

7. Job Opportunities

8. Podcasts

9. YouTube Videos

10. Deadlines

THIS WEEK’S TOP CDR UPDATES

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COMMERCIAL NEWS

Crew Carbon raised $25M to scale wastewater treatment and CO2 removal tech (SP Global)

Green Finance Institute launched CDR Catalyst, unlocking $1M+ loan financing for Restord’s UK biochar project (Restord)

Planet Savers secured ¥100M in grant funding from Mitsui’s Co-creation Fund (Mitsu)

InPlanet achieved a second verified credits issuance milestone for its ERW project in Brazil (Dispatch)

UK Department for Energy Security and Net Zero selected 15 DAC projects for £55M in pilot funding (Gas World)

Re.green issued its first 36,877 Verra-verified carbon removal credits from restored forests in Bahia (LinkedIn)

Government of Meghalaya established first community biochar unit in Northeast India to enhance soil health and CDR (Biochar Today)

Cascade Climate launched the Bedrock Initiative to scale ERW research globally (Cascade Climate)

Frontier approved Rainbow as a carbon credit issuer for eligible CDR pathways (Rainbow Standard)

Frontier Infrastructure Holding secured validation and expanded future CDR credit sales for its biomass removal project (PR Newswire)

New Zealand updated VCM guidance and launched a framework for assessing novel carbon removals (Gov.NZ)

Isometric’s Mangrove Restoration Protocol became the first blue carbon protocol approved for CCP-labelled credits (LinkedIn)

RESEARCH PAPERS

Global Carbon Budget 2025

Authors: Pierre Friedlingstein, Michael O’Sullivan, Matthew W. Jones, Robbie M. Andrew, et al.

Synopsis: This paper synthesizes methods and datasets used to quantify the global carbon budget, including fossil emissions, land-use change emissions, atmospheric CO₂ growth, and ocean and land carbon sinks. It shows that in 2024, total anthropogenic CO₂ emissions rose to about 11.6 ± 0.9 GtC yr⁻¹, with atmospheric CO₂ reaching 422.8 ppm, while land and ocean sinks absorbed a large fraction of emissions but left a remaining budget imbalance. The study highlights persistent uncertainties—especially in land-use change emissions, northern land fluxes, and ocean uptake—while confirming a near-consistent long-term carbon budget with remaining discrepancies at annual to decadal scales.

Decarbonizing desert greenhouse crop production with direct air capture–based CO2 enrichment

Authors: Zulma Lopez-Reyes, Wesley Hopwood, Jonathan Jones, Rod Wing, Raffaella Sordella, Carlos Grande & Rebekah Waller

Synopsis: High-tech greenhouses in hot-desert regions rely on carbon dioxide enrichment to boost crop yields, but current liquid CO₂ supply chains are costly and emissions-intensive. This study evaluates adsorption-based DAC systems—temperature-vacuum-swing (TVSA) and moisture-swing (MSA)—as on-site alternatives for CO₂ supply. Integrated techno-economic and life-cycle analysis shows that DAC-based enrichment can match conventional costs while reducing lifecycle emissions by eliminating transport-related CO₂. Performance is most sensitive to electricity price, carbon intensity, and sorbent efficiency. When powered by low-carbon solar electricity, DAC-enabled greenhouses offer a lower-emission and potentially cost-competitive pathway for sustainable high-yield agriculture in arid environments.

Impact on oysters in first-of-its-kind field trial of marine Enhanced Rock Weathering (mERW) with olivine as Carbon Dioxide Removal (CDR) strategy

Authors: Emilia Jankowska, Matthew Sclafani, Bonnie X. Chang et al.

Synopsis: Marine enhanced rock weathering (mERW) using minerals like olivine is being explored as a carbon dioxide removal strategy that could also reduce ocean acidification, benefiting calcifying organisms such as oysters. This study presents results from the first field trial of mERW, examining oyster growth and trace metal accumulation over short and long timeframes. Oysters exposed to olivine showed no significant differences in biomass compared to controls, and metal concentrations remained low and within safe natural ranges. Overall, the findings suggest that olivine-based mERW has limited biological impacts on oysters while posing no detectable human health risks under the conditions tested.

Biogenic carbon dioxide storage and mineral carbonation uptake in EU buildings

Authors: Dominik Steinberger-Maierhofer, Nicolas Alaux, Delphine Ramon, Semjon Popek et al.

Synopsis: This study quantifies CO₂ storage and uptake in EU buildings across material, building, and building-stock scales, comparing bio-based materials and mineral carbonation against sector emissions. Results show that bio-based materials provide the largest net carbon storage at the building level, while mineral carbonation effects are partly offset by production-stage emissions, leading to net-positive emissions overall. At the EU-27 stock level, biogenic materials contribute only modest net storage (about 1.27% of embodied emissions), while mineral processes increase emissions by around 10.16%, indicating limited net removal potential in current construction systems.

Short-term action is key for gigaton-scale Direct Air Capture by 2050

Authors: Tatjana Zurbriggen, Nicoletta Brazzola, Adrian Odenweller, Falko Ueckerdt & Joeri Rogelj

Synopsis: DAC is increasingly viewed as essential for net-zero pathways, but its ability to scale to climate-relevant levels depends strongly on early deployment dynamics rather than long-term demand alone. This study uses probabilistic diffusion modelling based on historical analogs such as ammonia synthesis and LNG to project DAC growth to 2050. Results show that without rapid early expansion, DAC is likely to remain at megaton scale, while gigaton-scale removal is only achievable under strong policy support and accelerated growth. The findings emphasize that near-term capacity building is the key determinant of long-term DAC impact.

Removing carbon, governing deployment: public perceptions of industry and community roles in U.S. carbon dioxide removal policy

Authors: Celina Scott-Buechler

Synopsis: Public attitudes toward CDR governance in the United States strongly favor democratic oversight, community involvement, and public accountability. A nationally representative survey shows that most respondents support mandatory local consultation, with many also favoring community ownership or voting stakes in CDR projects, and public ownership being preferred over private control by a 2:1 margin. Support for CDR is influenced by who endorses it, increasing with environmental NGO backing and decreasing with fossil fuel company involvement. While concerns include cost, effectiveness, and industry motives, many respondents also associate CDR with job creation and improved air quality, highlighting the importance of governance design in shaping public acceptance.

Direct evidence for enhanced mineral weathering in cropland verified by quantitative X-ray powder diffraction

Authors: Kohei Kurokawa, Atsushi Nakao, Kazuki Azuma, Hodaka Tomita, Katashi Kubo, Kazuki Nomura, Junta Yanai

Synopsis: ERW removes atmospheric CO₂ by applying crushed silicate rocks to soils, but direct evidence of in-soil mineral dissolution has been limited. This study uses quantitative X-ray powder diffraction to track basalt mineral changes in cropland over a 2.5-month buckwheat cultivation period with basalt application. Results show significant depletion of key minerals—especially pyroxene and bytownite—in plant root zones, confirming active weathering. Estimated CO₂ removal reached up to 7.2 tCO₂ per hectare over the study period. The findings provide direct mineral-level evidence of ERW and demonstrate a method for improved monitoring, reporting, and verification of soil-based carbon removal.

Not one shoe fits all: Applicability of hydrodynamic models for the simulation of ocean alkalinity enhancement in the Baltic Sea

Authors: Anna-Adriana Anschütz, Thomas Neumann, Peter Holtermann, Hagen Radtke

Synopsis: This study tests hydrodynamic model reliability using passive tracer simulations in the Baltic Sea Gotland Deep across different model configurations and resolutions. Results show large variability in predicted vertical transport, which significantly affects estimates of how quickly alkalinity reaches the surface and enables CO₂ uptake. The findings highlight that even well-calibrated ocean models can produce divergent outcomes, underscoring the need for dedicated validation of transport processes when modelling OAE and similar marine applications.

Strategic research priorities for marine climate interventions in Australia

Authors: Kerryn Brent, Lennart Bach, Andrew Lenton, et al.

Synopsis: Marine climate interventions (mCIs) include ocean-based carbon dioxide removal strategies and solar radiation management approaches aimed at supporting climate mitigation and protecting marine ecosystems. This paper assesses how research into these technologies should advance over the coming decade in Australia, emphasizing the technical, social, and governance barriers that must be addressed. It identifies three key priorities: expanding mCI research, strengthening monitoring, reporting and verification systems, and developing inclusive governance frameworks that engage affected communities and First Nations groups. These steps are framed as essential for informing future decisions on whether and how mCIs could be deployed in national climate policy.

Climate and ecological constraints of cultivating bioenergy crops for climate mitigation in tropical regions

Authors: Robert Fofrich Navarro, Alcen Chiu, Elsa M Ordway

Synopsis: This study shows that large shares of major bioenergy crops such as oil palm, sugarcane, and soybean will be exposed to climate conditions beyond their historical safe climate space by 2060, particularly in tropical regions. Such exposure could significantly reduce bioenergy yield and carbon sequestration potential, with possible declines of up to 67% for oil palm under limited adaptation. The results also highlight a trade-off: expanding cultivation to offset losses could lead to major carbon and biodiversity losses from land-use change, potentially undermining overall climate benefits.

Abrupt alkalinization alters microbial diversity and promotes the proliferation of marine parasites in coastal microcosm experiments

Authors: James A Gately, Sylvia M Kim, Zoe S Welch, et al.

Synopsis: OAE is a carbon dioxide removal approach that increases seawater alkalinity to enhance natural carbon uptake, but its ecological effects remain uncertain. This study tests large, abrupt alkalinity additions in outdoor microcosms using limestone-inspired and NaOH inputs. Results show shifts in microbial communities, reduced diversity, and increased parasitic organisms under low nutrients. Findings suggest potential ecosystem disruption near deployment sites and highlight the need for careful risk assessment before scaling OAE.

Integration of Direct Air Capture with the Chlor–Alkali Process for CO2 Mineralization: Techno-Economic and Life Cycle Assessment

Authors: Minseok Im, Konan Alain Cedric Nzisso, Inhye Kim, Cheol Hun Park, Sunghyun Cho

Synopsis: This paper proposes a novel DAC system integrated with a chlor–alkali (CA) process, called CADAC, which supplies Ca(OH)₂ directly to the DAC unit and removes the need for an energy-intensive calciner–slaker loop. Technoeconomic and life cycle analysis show improved profitability, with net gains of 18.0–35.1 million USD per year and a substantially lower levelized cost of carbon capture, even becoming revenue-generating in many scenarios. Environmental results indicate up to 72.7% reduction in global warming potential compared to standalone CA operations, with potential carbon-negative performance when renewable electricity exceeds 44.3%.

Vegetation-Mediated Soil Organic Carbon Differentiation and Carbon Sequestration Strategies in a Typical Wetland of the North China Plain

Authors: Zonglin Shi, Yan Wang, Xiaoshuang Li, Na Zhang, Sisi Li, Yue Wang, et al.

Synopsis: Wetland vegetation type strongly controls how soil organic carbon (SOC) is stored, transformed, and stabilized in surface soils. This study across Hengshui Lake wetland shows that reed marshes store the most carbon due to anaerobic conditions and strong aggregate protection, while woodlands enhance dissolved and microbial carbon through active microbial processing. In contrast, farmland and wasteland accelerate carbon breakdown and loss due to rapid labile carbon turnover. Differences in bacterial and fungal communities are primarily driven by soil moisture and bulk density, highlighting how vegetation shifts shape distinct carbon sequestration pathways and wetland carbon sink potential.

Larger forest patches have greater per-area productivity

Authors: Yibiao Zou, Gabriel Reuben Smith, Thomas Lauber, Joe Wan, Haozhi Ma, Noel Gorelick, Constantin M. Zohner & Thomas W. Crowther

Synopsis: An analysis of 17 million forest patches in the conterminous USA shows that larger, contiguous forests are substantially more productive per unit area, with a hectare in very large forests being about 38% more productive than in isolated patches. This fragmentation effect has already reduced national forest carbon uptake by an estimated 0.16 GtC per year (14%). Patch size emerges as a stronger predictor of productivity than soil or topography, and global data show similar trends, emphasizing fragmentation as a critical but often overlooked factor in climate mitigation planning.

Committed and irreversible humid heat stress risk in China despite carbon dioxide removal

Authors: Qianrong Ma, Jiayi Mu, Yingxiao Sun, Zhiwei Zhu, Siyan Dong, Leibin Wang, et al.

Synopsis: CDR may not fully reverse humid heat stress, even under net-negative emissions scenarios. This study of China finds that humid heat responds asymmetrically during warming and cooling, with only partial recovery as temperatures decline. The persistence of heat stress is driven by uneven changes in temperature and humidity, along with atmospheric circulation patterns that continue to transport moisture and sustain high heat conditions. As a result, more than 0.2 billion people could remain exposed to severe humid heat, with most of the impact arising from hysteresis effects, highlighting limits to reversibility and the need for adaptation alongside mitigation.

Quantifying capital-energy trade-offs in bipolar membrane electrodialysis for atmospheric and oceanic carbon removal

Authors: Hussain M. Almajed, Bri-Mathias Hodge, Wilson A. Smith

Synopsis: Bipolar membrane electrodialysis (BPMED) combined with DAC and direct ocean capture (DOC) is evaluated as a carbon removal pathway under variable power conditions. The study finds a key trade-off between system size and energy intensity: DAC-BPMED requires smaller membrane area but operates at much higher current densities than DOC-BPMED. As a result, DAC systems are more sensitive to operating costs, while DOC systems are more capital-intensive. Estimated costs range from US$304–1,281/tCO₂ for DAC-BPMED and US$535–2,220/tCO₂ for DOC-BPMED, with potential cost reductions from by-product sales and feedstock concentration.

Fixing carbon credits requires a new financing model

Authors: Benedict S Probst , Florian Egli

Synopsis: Carbon-crediting systems are increasingly central to net-zero strategies, but concerns over low environmental integrity and weak market signals are limiting the scale-up of durable CDR. This paper argues that improving standards and monitoring alone is insufficient, and that a new financing architecture is needed to unlock investment in permanent CDR. It proposes a tiered auction framework that sets explicit removal targets, enforces minimum quality criteria, and uses reverse auctions alongside first-of-a-kind funding to stabilize prices and reduce investment risk. The approach is designed to accelerate deployment of high-integrity carbon removal technologies by improving market certainty and financial viability.

Are mangrove carbon stocks climate-secure? Linking climate risk to blue carbon permanence

Authors: Pradeep Marula Siddappanavara and Jayashree P

Synopsis: Mangrove ecosystems are increasingly used as Blue Carbon assets in climate mitigation strategies, but current carbon accounting frameworks often assume long-term carbon permanence without adequately accounting for climate-driven risks. This review highlights how acute disturbances, chronic sea-level rise, and combined coastal stressors can destabilize stored carbon in mangroves. It identifies a gap between scientific understanding of ecosystem vulnerability and market-based crediting standards, which often overlook future climate hazards. To address this, the paper proposes shifting from static carbon stock accounting to a climate-secure framework that incorporates site-specific risk assessments and stability scoring to improve the integrity of Blue Carbon credits.

Sustained Neutralization of the Warming Response to Emissions through a Portfolio of GHG Mitigation Strategies - Preprint

Authors: Ella Hughes, Zeke Hausfather, Randall Spock, Christopher Van Arsdale

Synopsis: This paper argues that achieving net-zero requires combining emissions abatement with carbon dioxide removal strategies that operate over different time horizons. Because mitigation options affect climate warming on distinct timescales, the authors propose an accounting framework called “sustained warming neutralization,” which converts emissions and mitigation impacts into a unified metric based on continuous global mean surface temperature change. This approach aims to ensure that emissions are fully compensated in both the near and long term, supporting more robust and time-consistent net-zero claims and guiding the design of mitigation portfolios aligned with global temperature stabilization goals.

Distinct Impacts of Carbon Dioxide Removal and Radiation Management on Regional Monsoons

Authors: Qi Zuo, Jian Cao, Mengying Zhao

Synopsis: Climate mitigation strategies such as CDR and radiation management (RM) can reduce global temperatures, but they produce uneven regional impacts on monsoon rainfall. Using a climate model, this study compares how different approaches affect monsoon systems across Asia, North America, and North Africa. Results show that global cooling generally weakens monsoon rainfall in Asia and the Southern Hemisphere, while increasing rainfall in the North American monsoon region. In North Africa, outcomes depend strongly on the specific mitigation method, with CDR reducing rainfall and RM approaches increasing it. These contrasting responses are driven by changes in atmospheric circulation and temperature gradients, highlighting that temperature mitigation may redistribute rather than uniformly improve water availability.

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WEB POSTS

First test of CO2 removal with green sand finds no harm to marine life (New Scientist)

The AI Boom Needs Carbon Removal (Heatmap)

Arctic fires are releasing carbon stored for thousands of years (New Scientist)

A deep-ocean climate plan wins rare EPA approval, but is sinking plants in the sea the answer? (The Conversation)

Direct Air Capture, e-methanol and CO₂ electrolysis technologies win innovation award (Chem Europe)

Stashing CO₂ in the sea (The Invading Sea)

New law prohibits state, county lands from carbon sequestration projects (NHPR)

Shopify says durable CDR deliveries lag despite new deals (Carbon Pulse)

Mammoet awarded heavy-lift scope for BECCS Stockholm (AJOT)

Demand remains major issue for carbon removal sector, says industry (Carbon Pulse)

EU to slow pace of ETS to meet 2040 climate goals (Argus)

Foresight Canada Names Svante Venture of the Year (Svante)

The Humber region and its cities are a hub for carbon removal – here’s why (The Conversation)

We’ve only started to unlock the carbon removal market (Carbon Removal Alliance)

NGOs Release New Recommendations for Marine Carbon Dioxide Removal Field Experiments (Ocean Conservancy)

The Current State of CDR and EU ETS Integration (Mangrove Systems)

International Biochar Initiative and Lyntra Launch Virtual Certification to Standardize Global Facility Operations (Biochar Today)

VCM Project: Verra flags loss at ARR site; Rainbow lists 3 schemes (QC Intel)

Drill, baby, drill… so the US can meet the Paris Agreement goals? (Everything & the Carbon Sink)

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REPORTS

CCUS Innovation 2.0 competition: Carbon sequestration in the built environment (Gov.UK)

Latin America Carbon Removal Investment Roadmap (Carbon Business Council)

The Guide to Corporate Net-Zero Claims: 2026 (ClimeFi)

How to build a resilient carbon removals portfolio (Abatable)

Not Just Voluntary Credits: Three CDR Demand Trends to Support and Scale (RMI)

Scaling Biochar Carbon Removal in India: Opportunities, Challenges, and Policy Pathways (CRIA and BioFlux)

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UPCOMING EVENTS

Raising The Bar In CDR Happy Hour! by Joseph Kochanski & Allison Stephens | 19 May 2026 | United States

Scaling CDR in the Global Hub for Finance, Policy, and Innovation by Carbon Unbound east coast | 19 & 20 May, 2026 | New York

APACdr SUMMIT by Emerald Climate | 20 May 2026 | Singapore

From Innovation to Infrastructure for CDR in APAC by Puro.earth Events | 20 May 2026 | Singapore

Brussels Networking Event: Connecting Policy, Buyers, and Technology by Negative Emissions Platform | 20 May 2026 | Brussels

The CORE Framework for Carbon Removal - on Scrubbing the Skies by Institute for Responsible Carbon Removal | 20 May 2026 | Online

Carbon Removal and Carbon Farming “CRCF” | 20-21 May 2026 | Brussels

Carbon Removal Challenge Winners Showcase by OpenAir Collective | 20 May 2026 | Online

(NEW) From Innovation to Infrastructure - CDR in APAC by Puro.earth | 20 May 2026 | Singapore

10 International Symposium on Soil Organic Matter | 25-29 May 2026 | Brazil

From an emissions source to a carbon storage solution by ecoLocked | 26 May 2026 | Online

Remote sensing of the land biosphere to support quantification of carbon emissions and removals by the EU projects Avengers, Eye-clima & Paris | 26 May 2026 | Online

(NEW) From an emissions source to a carbon storage solution by Paebbl | 26 May 2026 | Online

(NEW) mCDR governance under international legal frameworks by Columbia University | 27 May 2026 | Online

(NEW) Carbon Removal Readiness Assessments - Poland Launch by Carbon Gap | 29 May 2026 | Online

June 2026

(NEW) Recognition of Certification Schemes for Permanent Carbon Removals under the CRCF Regulation by European Commission | 01 June 2026 | Online

The State of Carbon Dioxide Removal, Edition 3 - Launch by State of Carbon Dioxide Removal | 02 June 2026 | Online

TOCW Flagship Event - Carbon Solutions: Canada’s Competitive Edge by Toronto Climate Week | 03 June 2026

(NEW) C2V Initiative Year 5 Final Showcase by Urban Future Lab & Greentown Boston | 03 June 2026 | United States

Negative Emissions Summit 2026 | 04 June 2026 | Brussels

CO2 removal from the atmosphere – New opportunities for climate protection and innovation | 08 June 2026 | Berlin

(NEW) ‎Reclaiming Hope, Removing Carbon by University of Bristol | 11-14 June 2026

Carbon Drawdown Symposium 2026 by Carbon Drawdown Initiative | 16–17 June 2026 | Online & Hotel Luise, Erlangen

Carbon Removal London 2026 by Supercritical | 22 June 2026 | London

Scaling CDR Summit by Isometric | 23 June 2026 | London, England

Building the CDR market of tomorrow by AlliedOffsets and LSE | 24 June 2026 | London, UK

(NEW) Symposium on Biomass-Based Carbon Removal by NET-Fuels | 25 June 2026 | Emilia-Romagna

23rd International Conference on Carbon Dioxide Utilization | 6-10 July 2026 | St.Louis, Missouri

Nordic Climate Finance Summit | 3-4 September 2026 | Oslo, Norway

Carbon Removal Policy Summit by Carbon Gap | 16 September 2026 | Brussels

CDR26–CDRANet’s 2026 conference on the future of carbon dioxide removal | 20-21 October 2026 | Vancouver

2026 North American Biochar Conference - Setting the Standard for Biochar by American Biochar Institute | November 16-18, 2026 | New Orleans, Louisiana

Carbon Removal Events Calendar

JOB OPPORTUNITIES

Manager, Industrial Integration at Carbon Removal Canada | Canada

“Carbon Removal Canada is dedicated to advancing inclusive policies and innovations to scale up carbon removal.”

Sr. Thermodynamics Performance Engineer at Arbor | El Segundo, CA

“Arbor’s advanced power systems deliver clean, reliable baseload electricity with zero operating emissions—modular, fuel-flexible, and engineered for the realities of today’s energy demand. At the core is a supercritical CO₂ turbine with integrated carbon capture, designed to bring carbon-neutral power online quickly at meaningful scale.”

Technical Manager (APAC Region) at Carbon Cure | Japan

“CarbonCure Technologies is a fast-growing carbon utilization technology company on a mission to reduce embodied carbon in new concrete construction.”

Accounting Manager at Charm Industrial | Fort Lupton, CO

“Charm Industrial’s mission is to return the atmosphere to 280 ppm CO₂. We convert excess inedible biomass into carbon-rich bio-oil and inject it into underground storage for permanent carbon removal.”

Process Engineer Intern at Brineworks | Amsterdam, North Holland, Netherlands

“Brineworks is building the electrolyzer of the future — a patented system that powers ultra-low-cost Direct Air Capture using intermittent renewables and low-cost abundant materials.”

Founder Associate - Commercial at Mitti Labs | Remote, Bengaluru, Karnataka, India

“Mitti Labs is building the infrastructure layer to scale climate-smart rice farming — starting with high-integrity, methane-reduction carbon credits.”

Vice President, Non-CO2 Climate Solutions at Rubicon Carbon | San Francisco, New York, LA, or Singapore

“Rubicon Carbon is a next-generation carbon credit firm. Led by a world-class management team, Rubicon Carbon is an innovative platform that channels capital to unlock at-scale decarbonization projects and delivers trusted, enterprise-grade solutions for carbon credit purchases.”

Vice President (Finance) at Alt Carbon | Bangalore, India

“Alt Carbon is a deeptech science and data company, building agri-infrastructure for climate action. We aim to make South Asia a hub for Carbon Dioxide Removal (CDR) through technology pathways like Enhanced Rock Weathering and Biochar.”

Finance and Operations Manager at Symbiosis | Remote (U.S. based)

“Symbiosis Coalition is an advance market commitment by Microsoft, Meta, Google, Salesforce, McKinsey, Bain and REI to accelerate the next generation of high-integrity nature-based carbon removal.”

Senior Techno-Economic Analyst at Skytree | On-site, Hybrid Amsterdam, Noord-Holland, Netherlands

“Skytree enables a transition to a world with cleaner Air for everyone. We do this by developing and deploying smart technology that captures atmospheric carbon dioxide, enabling its use or storage to combat climate change and aid society and businesses around the world.”

Junior Deployment Engineer at Greenlyte | Essen

“Greenlyte is reshaping the global fuel economy with our novel, IP-protected, direct air capture to fuels technology, which shows superior economic potential compared to existing approaches, even reaching fossil prices.”

Carbon Communications at Deepsink | London Area, United Kingdom

“Deepsink is a commercial agency dedicated to accelerating the commercial development of Carbon Dioxide Removal (CDR) companies.”

Financial Controller at Isometric | London

“Isometric is the world’s leading carbon removal registry. We help Fortune 100 companies tackle climate change and avoid greenwashing.”

CDRjobs Board

PODCASTS

Viridas Pressurised DAC, El-Sayed | Reviewer 2 does geoengineering

“In this episode, @geoengineering1 speaks with Ahmed El-Sayed of Viridas Technologies, a company aiming to revolutionize Direct Air Capture (DAC) by redesigning the process from the ground up, including the fan system itself.

The conversation explores why DAC remains expensive, largely due to the extremely low concentration of CO2 in ambient air. While most research focuses on developing new solvents and materials to reduce energy use, Ahmed argues that the thermodynamic limits of capture efficiency may already have been reached. Instead, Viridas is pursuing a different strategy i.e. increasing the volume of air processed.

Their proposed high-pressure system reduces contactor size by 70x while delivering more than 3100x better performance through major gains in absorption capacity and absorption rate. Ahmed also discusses the use of scalable, oxygen-resistant solvents derived from widely produced industrial chemicals, and why the future of DAC may depend on breakthroughs in turbomachinery and membrane technologies to drive costs down to ultra-low levels and enable gigaton-scale deployment.

Paper Discussed: Elsayed, A., & Alawadh, T. (2026). Scaling Carbon Removal to Gigaton Capacity using Pressurized Direct Air Capture. https://doi.org/10.26434/chemrxiv.15002130/v1

“Carbon Removal Is a Boots-on-the-Ground Business,” Diego Justiniano, Exomad Green CEO | Carbonsations

“Joining us in today’s episode is Diego Justiniano, CEO and founder of carbon removal company and the world’s largest biochar supplier Exomad Green. Diego shared the company’s journey to its latest milestone of 2.3 million tonnes of CDR credits sold and over 300,000 tonnes delivered, and stressed the importance of understanding that carbon removal requires a hands-on approach to achieve industrial scale.”

How to Pitch Terraset (and other carbon removal buyers)—w/ Taylor Insley, Terraset | Reversing Climate Change

“What do you think of a developer who pitches a carbon dioxide removal buyer as they are coming out of the restroom? Or can’t even enjoy some friendly scones while we all get caffeinated? Or interrupt conversations with business cards?! Forgetting that buyers are people with names and feelings and limited social energy is a tough look to beat.

At a recent Carbon Unbound in Vancouver, today’s guest—Taylor Insley, the Director of Strategic Planning for Terraset—was on a panel that made a splash: she was telling developers, basically, that the way many of them approach buyers is counterproductive.

I wanted to talk to Taylor because she sits in an unusual position. She spent most of her career as a fundraiser, soliciting donors for causes she cares about. Now at Terraset, the turntables have turned. She’s the recipient of pitches for tax-deductible and highly catalytic CDR and other climate interventions. And that perspective shift has taught her something about what works and what doesn’t that I think is genuinely useful for anyone trying to raise money in this space.

But this episode also goes somewhere uncomfortable. We talk about fairness. About whether it should matter that you’re charming and diplomatic, or whether the science and economics should be all that counts. About status and in-groups and the fundamental hypocrisy of caring about relationships when you’re on one side of the table and resenting them when you’re on the other. I brought in the Chinese Imperial Exam, The Godfather, Love on the Spectrum, whether dogs are communists or private property lovers depending upon who has food... It was a lot, but I think we successfully got to the core of this topic.”

The World’s First International CDR Transfers: Lessons from the Inside - with Veronika Elgart and Ane Gjengedal | The CDR Policy Scoop

“Recorded on May 6th at Zurich’s first-ever Climate Week, this is a different kind of episode. Sebastian Manhart and Eve Tamme spent the day inside a series of Swiss government-hosted events on international CDR pilot transfers and brought the microphones with them.

The Switzerland-Norway and Switzerland-Sweden pilots are quietly doing something that almost no one else is: actually testing the full Article 6 machinery for durable CDR transfers, end to end, with real private sector partners at the table. The question is what that process is revealing: about what works, what doesn’t, and how far the rest of the world is from being able to follow.

Eve and Sebastian got to sit down with two people instrumental in making these pilots happen: Veronika Elgart, Deputy Head of International Climate Policy at Switzerland’s Federal Office for the Environment, and Ane Gjengedal, Senior Adviser at the Norwegian Ministry of Climate and Environment. The surprises are real and so are the unresolved tensions around: use cases, corresponding adjustments, and the gap between having regulation on paper and having markets that function.

The honest answer from everyone in the room: this is harder than it looks, it’s taking longer than expected, and starting sooner is the only advice that holds across every jurisdiction.”

CBAM and International Credits: What’s Just Changed? - with Dan Maleski | The CDR Policy Scoop

“The European Commission just published a draft implementing act on CBAM and it quietly opens the door to international carbon credits counting toward carbon border liabilities. The rules are still being written, but the direction of travel is clear.

Co-hosts Sebastian Manhart and Eve Tamme pulled our favourite CBAM expert, Dan Maleski back in for a rapid-fire debrief the day after publication. They wanted to get the Scoop on what’s actually in the act, what’s still missing, and what does it mean in practice for companies, governments, and CDR?

The conversation unpacks the 10% cap on Article 6 credits, why domestic credits face no equivalent limit, and why that asymmetry should raise eyebrows. Dan also flags a real risk: with prices in voluntary carbon markets anything but standardised, the room for manipulation is not hypothetical. And with “independent persons” as the main safeguard, the jury is still out on how watertight this will be.

One thread runs through it all: CBAM is pushing trading partners toward compliance regimes that look more like the EU ETS and for CDR project developers who can align with that compliance demand, the long-term signal is significant.

The consultation closes in early June. While still unresolved, this one is worth watching closely.”

Dr. Christian Komor on Carbon Removal as Infrastructure: Dr. Christian Komor on Climate Urgency, Policy, and the Limits of Incremental Action | Net Zero Compare Podcast

“In this episode: Dr. Christian Komor, climate author and Earth systems strategist, joins Net Zero Compare to discuss why carbon removal should be treated as climate infrastructure rather than a peripheral technology.

The conversation explores one of the central debates in long-term net-zero strategy: whether emissions reduction alone is enough to manage climate risk. Dr. Komor argues that accumulated atmospheric carbon, climate feedback loops, and slow policy response make large-scale carbon removal increasingly urgent. He explains direct air carbon removal, carbon utilization, and the importance of pairing removal facilities with clean energy. A key focus is his SkyCarbon Blueprint, a proposed state-led model for scaling direct atmospheric carbon removal in Colorado through public-private financing, co-located renewable energy, industrial carbon use, and interstate coordination. The episode also examines cost, policy, resilience, public will, and the role of companies while regulation remains uncertain. Ultimately, the discussion highlights that a credible climate strategy may need to combine emissions reduction, carbon removal, adaptation, better data, and systems-level planning.”

YOUTUBE VIDEOS

Earth-Powered Carbon Removal: How Geothermal Energy Can Capture CO₂ & Fight Climate Change | Airmobilityinfra Private Limited

“What if the Earth itself could help remove carbon dioxide from the atmosphere? In this video, we explore the powerful combination of Geothermal Energy and Direct Air Capture (DAC) technology — a breakthrough solution for sustainable carbon removal and clean energy generation. Discover how geothermal heat can drastically reduce the energy cost of capturing CO₂, enabling a reliable, scalable, and low-carbon pathway toward net-zero emissions. From binary geothermal power plants to thermal regeneration systems, this video explains how underground energy resources could become a game-changing climate solution for the future of our planet.”

The Role of Indigenous Leadership in Carbon Removal | Carbon Removal Canada

“Indigenous communities aren’t just stakeholders in carbon removal. They’re leaders, knowledge holders, and decision-makers shaping what this sector looks like and who it works for.

In this episode, we sit down with Indigenous leaders working at the intersection of land, climate, and carbon removal to hear directly from them: what’s working, what needs to change, and what responsible carbon removal looks like when Indigenous peoples are in the driver’s seat.”

Dr. Christian Komor on Climate Urgency, Policy, and the Limits of Incremental Action | Net Zero Compare

“ In this episode: Dr. Christian Komor joins Net Zero Compare to discuss why carbon removal should be treated as climate infrastructure, not as a peripheral or future climate technology.”

From Field to Credits: Inside the World’s First Second-Year Enhanced Rock Weathering Credit Issuance | InPlanet - Measurable. Scalable. Certified Credits

“In this webinar, we’ll walk through real-world results from InPlanet’s tropical field project in Brazil, including CO₂ sequestration rates, MRV evolution, and insights from a second crediting cycle. We’ll also explore what this means for carbon markets in 2026, and how ERW is creating value beyond carbon through soil health, crop productivity, and supply chain resilience.”

CO2LOGIX: First-order model of pressure-constrained CO2 geological storage growth at the basin scale | CMCC Channel

“This session is dedicated to recent publications on CDR research, will focus on the paper CO2LOGIX: A first-order model of pressure-constrained CO2 geological storage growth at the basin scale.”

Responsible Business Practices Building Credible CDR Strategies | The Gold Standard Foundation

“Organisations everywhere are under pressure to move beyond ambition and deliver real climate and nature impacts. Gold Standard’s quarterly Responsible Business Practices webinar series helps organisations set and check their direction so they can act confidently, reduce uncertainty and deliver credible sustainability outcomes.

Each quarter, we navigate the evolving landscape of climate and nature action. Participants will learn about the latest trends, case studies and resources that show what meaningful responsibility looks like in practice. This quarter’s webinar focused on building credible CDR strategies and how to navigate this evolving landscape with Kaya Axelsson of Oxford Net Zero.”

Weekly Carbon Removal Updates from 11 May - 17 May 2026 | Carbon Removal Updates Bulletin

DEADLINES

The Rainbow Biogenic carbon capture and storage methodology is open for public consultation | Deadline: 21 May 2026

Gold Standard has launched its first methodology for biochar-based CDR | Consultation closes: 22 May 2026

(NEW) EU invites feedback on CRCF rules for carbon storage in buildings using bio-based materials | 22 May 2026

Carbonaires launched an RFP aimed at bringing offtake-backed financing into high-quality CDR projects | Projects submission deadline: 22 May 2026

Deloitte launched an EU survey to design a carbon farming Buyers’ Club under CRCF | Deadline: 26 May 2026

Frontier & Carbon Removal Canada launched a surficial mineralization hub in Quebec | Applications for pilot and research projects are now open, with pre-applications due by 26 May 2026

Carbon Removall launched its 2026 RFP for carbon removal projects | Deadline: 29 May 2026

SICTOM PEZENAS-AGDE in southern France issued a €13.7M biochar facility tender | Submission deadline: 29 May 2026

The UpLink–World Economic Forum Innovation Challenge is open for CDR startups | Applications close 4 June 2026

California Air Resources Board is seeking feedback through June 5, 2026, on draft regulatory concepts for the CCUDS and CDR

Verra opened consultation on improved forest sequestration methodology | Deadline: May 6-8 June 2026

(NEW) ‎The Clean Energy Ministerial CCUS Initiative and Mission Innovation CDR launched Carbon Management Project Awards for CCUS and CDR projects | Submission deadline: 07 June 2026

(NEW) The European Commission has opened a consultation on draft CBAM rules that would recognise Article 6 credits when calculating the carbon price paid in exporting countries | Deadline: 10 June 2026

(NEW) Wren launched its 2026 RFP, offering up to $500K for ARR, blue carbon, and methane reduction projects | Deadline: 30 June 2026

(NEW) California Energy Commission opened $11M funding for pre-commercial DAC projects | Deadline July 31, 2026

Call for Proposals: Sweden’s Energy Agency launched a $1B BECCS funding round for CO₂ capture from bioenergy | Deadline: 13 August 2026

Swedish Energy Agency opened 15M SEK funding for negative emissions R&D | Deadline: 31 August 2026

Germany launched €5B Carbon Contracts for Difference program to support CCS and CDR | Tender submission deadline: 07 Sep 2026

Carbon Management journal calls for CDR papers | Deadline: 13 November 2026

(NEW) Call for Manuscripts | Research Topic: Forest Carbon Sinks: Fluxes and Storage Capacity | 31 January 2027

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JUMP TO SECTION

1. This Week’s Top CDR Highlights

2. Commercial News

3. Research Papers

4. Web Posts

5. Reports

6. Upcoming Events

7. Job Opportunities

8. Podcasts

9. YouTube Videos

10. Deadlines

THIS WEEK’S TOP CDR HIGHLIGHTS

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COMMERCIAL NEWS

Jalo launched a €20M equity fundraising round for its BECCS plant in Netherlands, which aims to target 56,000 t CO₂ removal per year (LinkedIn)

Emissions Reduction Alberta launched $50M industrial CDR innovation call

California Energy Commission opened $11M funding for pre-commercial DAC projects; deadline July 31, 2026 (California Energy Commission)

Supercritical secured new funding led by Greencode Ventures with multiple VC participants (Supercritical)

Sweden and Switzerland signed an agreement on cross-border trading of negative emissions (Swedish Energy Agency)

Isometric issued Rewind’s first CDR credits under a new biomass storage module (LinkedIn)

Cella Mineral Storage & Octavia Carbon completed Kenya’s early DACCS CO₂ injection test (~0.5 t) (JPT)

Exomad Green surpassed 2.3M tonnes CDR sold and 342k tonnes delivered (Exomad Green)

Prometheus Materials partnered with Green Stream Algae on algae-based low-carbon cement scaling (Prometheus Materials)

Jalo partnered with Rainbow to align BECCS carbon removal with EU compliance frameworks (LinkedIn)

Remove Carbon Today launched global access to certified CDR with registry proof within a month (Dispatch)

Carbo Culture & Netherlands Enterprise Agency partnered to scale industrial biochar in North Holland (Invest Holland)

OSCAR released Swiss legal jurisdiction version of its CDR purchasing agreement standard (Carbon Pulse)

American Carbon Registry expanded standards to include DAC and BECCS crediting (QC Intel)

Holcim, Paebbl & GOLDBECK completed first commercial-scale carbon-storing mineralization use in Germany (Holcim)

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RESEARCH PAPERS

Combining biochar and basanite rock powder enhances carbon dioxide removal by carbonate alkalinity production

Authors: Johannes Meyer Zu Drewer, Maria-Elena Vorrath, Thorben Amann, et al.

Synopsis: This study examines combining Enhanced Rock Weathering (ERW) with Pyrogenic Carbon Capture and Storage (PyCCS) through co-application and co-pyrolysis of silicate rock powder and biochar. Results show that rock-enhanced biochar produced greater carbonate alkalinity and improved weathering performance compared to rock powder alone or simple co-applications. The findings suggest that integrating ERW with biochar could strengthen carbon dioxide removal, reduce biochar carbon losses, and provide additional agricultural benefits without negatively affecting plant growth.

Plentitude of Pathways: Expert Views on the Benefits and Risks of Carbon Dioxide Removal in Six Countries

Authors: Benjamin K. Sovacool, Nick Fitzpatrick, Livia Fritz, Lucilla Losi

Synopsis: Through 98 expert interviews across academia, government, civil society, and industry, this study examines the major benefits and risks associated with CDR deployment in both Global North and Global South contexts. Covering Italy, Norway, United Kingdom, Brazil, Malaysia, and Saudi Arabia, the research identifies key economic, political, ecological, and social trade-offs that could shape the equitable and sustainable scale-up of CDR techn

Biological carbon sinks in aquaculture: evaluating sequestration potential and integration into carbon markets

Authors: Christian Larbi Ayisi, Samuel Ayeh Osei, Adelaide Henewaa & Rosemary Anderson Akolaa

Synopsis: This study explores the potential of aquaculture systems, particularly shellfish, seaweed, and Integrated Multi-Trophic Aquaculture (IMTA), to act as blue carbon sinks and participate in carbon credit markets. It highlights how aquaculture can sequester carbon through biological and sedimentary processes while examining requirements such as additionality, permanence, and measurability for market inclusion. The paper also discusses emerging tools like AI monitoring and blockchain, alongside challenges including verification costs, regulatory barriers, and uncertainties in carbon accounting.

The state of macroalgae carbon dioxide removal: insights from a methodology development team

Authors: Donald E. Martocello, Thomas Storwick, Carolyn Buchwald

Synopsis: As interest in durable CDR grows, macroalgae cultivation has emerged as a promising ocean-based carbon storage pathway. This perspective examines an industry-academic effort to develop a scientifically rigorous carbon credit methodology for seaweed-based CDR, highlighting the scientific, financial, and monitoring challenges that prevented completion. The authors argue that advancing scalable macroalgae CDR will require public investment, improved remote sensing, AI-enabled monitoring, and stronger methodological frameworks for carbon accounting.

Soil Remineralization in Agroecological Systems: A Critical Review

Authors: James Jerden, Thomas Vanacore, Joanna Campe

Synopsis: Drawing on 191 experimental and field observations, this review examines soil remineralization as an agroecological strategy for restoring degraded soils and improving food security. The findings show that finely ground silicate rock powders, especially when combined with organic matter, biochar, and microbial amendments, frequently enhance crop yields, nutrient uptake, soil structure, and carbon storage. The paper emphasizes that successful outcomes depend on mineralogy, biology, weathering dynamics, and careful management to avoid ecological risks linked to inappropriate rock use or excessive application.

Metal bioaccumulation from diatoms to Antarctic krill under ocean alkalinity enhancement with steel slag

Authors: Jiaying A Guo, Kerrie M Swadling, Robert F Strzepek, et al.

Synopsis: Using a 14-day experiment with diatoms and Antarctic krill, this study assesses the ecological risks of steel slag-based OAE, a carbon dioxide removal approach that increases seawater alkalinity. Although slag-treated seawater elevated dissolved aluminum and manganese levels, researchers found limited metal accumulation and low biomagnification across the marine food chain. The results suggest that, under the tested conditions, steel slag leachate may pose relatively low risks to trophic metal transfer in Antarctic marine ecosystems.

A system-based analysis of carbon fluxes shows that bivalve aquaculture cannot be considered a marine carbon dioxide removal strategy

Authors: Fabrice Pernet , Phillip Williamson , Frédéric Gazeau

Synopsis: Framed around the rapid expansion of marine carbon dioxide removal (mCDR), this analysis evaluates whether bivalve aquaculture can legitimately be classified as a carbon removal strategy. It finds that bivalves are not net CO₂ sinks due to respiration and calcification processes, while ecosystem-level claims of enhanced carbon sequestration remain poorly evidenced and methodologically weak. The study concludes that bivalve farming lacks additionality, permanence, and robust MRV foundations, making it scientifically unjustified as a basis for carbon credits despite its value as a sustainable food production system.

Preparing low-calcium carbonatable clinker using waste concrete powder and its negative CO2 emission feasibility

Authors: Jiaxin Li, Wei Chen, Bo Li, Bo Yuan, Kuo Yang

Synopsis: Turning construction waste into a climate solution, this study develops a low-calcium clinker from high-silica waste concrete powder combined with hydrated cement paste and processed at 1150 °C. The resulting material forms a carbonate-binding structure during curing, achieving high compressive strength while enabling significant CO₂ uptake through carbonation. Life-cycle analysis indicates net-negative emissions, with carbon sequestration exceeding process emissions, demonstrating a circular pathway for producing structural building materials that function as long-term carbon sinks.

Monitoring, reporting, and verification of marine carbon dioxide removal: Exploring scientific consensus and divergences across continents

Authors: Linn J. Hoffmann, Lennart T. Bach, Kohen W. Bauer, Jessica Cross, et al.

Synopsis: Through a globally distributed consultation of scientists across six regional nodes, this study explores how monitoring, reporting, and verification (MRV) frameworks for mCDR can be standardized and internationally accepted. It finds broad agreement on the importance of modeling-based MRV approaches, alongside regional differences in priorities such as the balance between local and global modeling needs. The results highlight both convergence and divergence in scientific perspectives, offering a foundation for more coherent and globally legitimate MRV systems for ocean-based carbon removal.

Integration of direct air capture with solar tower and chimney power plants: energy, economic and carbon assessments

Authors: Youssef Elaouzy, Mustapha Soukri, Kumar Patchigolla, Abdulkarem I. Amhamed, Abdelghafour Zaabout

Synopsis: An integrated energy–carbon system combining a solar tower power plant (STPP), a solar chimney power plant (SCPP), and a DAC unit is assessed for its technical, economic, and climate performance. By utilizing waste heat from the STPP to reduce DAC energy demand and enhance SCPP output, the system is evaluated across multiple operational scenarios. Results indicate significant cost reductions in electricity production and substantial net CO₂ avoidance, with the most effective configurations relying on waste heat recovery and low-pressure steam for CO₂ desorption.

Next-gen carbon capture: Life cycle metrics of solar-integrated direct air capture technology

Authors: Mohsen Nasrollahi, Farzin Hosseinifard, Mohsen Salimi, Majid Amidpour

Synopsis: A cradle-to-gate life cycle assessment evaluates a DAC system powered by photovoltaic (PV), parabolic trough (CSP-PTC), and solar tower (CSP-T) renewable energy configurations, comparing their energy use and environmental impacts per ton of CO₂ captured. Across modeled scenarios, all systems show similar performance, with PV offering slightly lower overall environmental burden and marginally reduced exergy demand. The analysis highlights potassium hydroxide as a key driver of resource use and finds that most environmental impacts are associated with human health, while overall differences between configurations remain small within LCA uncertainty ranges.

Determinants community involvement in a forest carbon sequestration initiative: A study case in Indonesia

Authors: Novelia Triana, Takahiro Ota, Sunhee Suk

Synopsis: Focusing on community participation in forest carbon sequestration projects, this study analyzes how program design and perceived co-benefits influence local engagement among 231 households near a forest concession area. Using regression and structural equation modeling approaches, it finds that factors such as capacity building, environmental education, transparent communication, and participatory program management strongly shape willingness to participate. Material incentives alone are insufficient, with results emphasizing that procedural justice and long-term engagement structures are critical for the sustainability of nature-based climate mitigation initiatives.

Direct Air Capture and Sequestration of CO2 with a Tailored Hybrid Anion Exchanger: Novel Use of Seawater as a Primary Regenerant and an Infinite Sink

Authors: Xinkai Wu, Hao Chen, Haibo Liu, Arup K. Sengupta

Synopsis: Introducing a novel solid ion-exchange material, this study proposes a seawater-regenerated DAC system based on a decarbonizing hybrid anion exchanger (D-HAIX) for ambient CO₂ removal. The material demonstrates high capture capacity, long-term durability across hundreds of cycles, and regeneration via chloride–bicarbonate exchange using seawater without altering salinity or harming tested marine organisms. By avoiding energy-intensive thermal desorption and geological storage, the approach suggests a potentially scalable coastal DAC pathway that leverages the ocean as a carbon sink, expanding deployment options for countries lacking suitable subsurface storage.

Agroforestry as a Corporate Carbon Sink: Institutionalizing Farmer-Generated Carbon Credits

Authors: Deeksha S.

Synopsis: This paper proposes a Farmer–Corporate Carbon Institutional Model (FCCIM) to transform farmer-managed agroforestry systems into verified corporate carbon sinks through carbon credit generation. By integrating carbon measurement, reporting and verification (MRV), Farmer Producer Organizations (FPOs), and corporate procurement systems, the framework aims to support both corporate net-zero goals and rural income diversification. The study also presents financial simulations for agroforestry carbon revenues and discusses policy, governance, and risk management considerations for emerging carbon markets.

Biochar Carbon Removal with energy co-production – Present and future business models

Authors: Monika Orlowski, Hannes Bluhm, Bernd Hirschl

Synopsis: Based on analysis of 39 pyrolysis plants across Germany, Austria, and Switzerland, this study maps emerging business models for biochar carbon removal systems with energy co-production and identifies four main archetypes: integrated biomass utilizers, energy users, energy suppliers, and specialized operators. These models vary in scale, integration, and product focus, with heat production currently the most mature application. Future pathways point toward expanded roles in district heating, flexible electricity systems, bio-oil markets, and hydrogen production, but scaling remains dependent on technological advances and supportive policy frameworks.

The possible institutionalisation of the carbon removal budget concept across the UNFCCC, UNCBD, and corporate net-zero strategies

Authors: Jacopo Bencini, Laura Iozzelli

Synopsis: Examining the proposed Carbon Removal Budget (CRB) concept, this policy analysis explores its potential institutionalisation across multilateral climate and biodiversity governance systems as well as corporate net-zero frameworks. Drawing parallels with the established Carbon Budget concept, it assesses opportunities and constraints within the UNFCCC, the UN Biodiversity Convention, and the Science-Based Targets initiative (SBTi). The study finds the UNFCCC to be the most promising venue for adoption, while highlighting emerging linkages through the Kunming–Montreal Framework and identifying the SBTi revision process as a key window for integrating CRB into corporate climate target setting.

Constraints on silicate weathering and ocean circulation during the MECO from silicon isotopes - Preprint

Authors: Ms. Ruchi, Dr. Michael James Henehan, Dr. Patrick Frings, Ollie Laub et al.

Synopsis: This study investigates the Middle Eocene Climate Optimum (MECO), a prolonged warming event marked by unusual carbon cycle behavior. Using the first silicon isotope records from the MECO, researchers find that Earth’s silicate weathering feedback remained relatively stable, challenging previous theories that weakened weathering drove the event. Instead, the study suggests that shifts in ocean circulation may have played a major role in sustaining warming and altering global carbon cycling through enhanced CO₂ outgassing, reverse weathering, and carbonate redistribution.

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WEB POSTS

Designing Net-Negative Systems: Alastair Collier on Biochar and Scale (Biochar Today)

Welcoming Isometric and Cercarbono to OffsetsDB (Carbon Plan)

ACR updates CCS methodology with wider CDR, biogenic carbon eligibility (Carbon Pulse)

Why it’s time for a strategic reset on negative emissions (Ember)

Chasing Net Zero Is Futile (For Now) — Invest Your Ambitions Into Changing Systems Instead (Carbon Drawdown Initiative)

Climate tech can’t scale on corporate generosity alone (Latitude Media)

Regenerative Food Labels: What’s Behind the Claim? (Friends of the Earth)

Apr. NbS Removals: Offtakes, new funds value hit 15-month high (QC Intel)

How surface roughness scaling can mislead enhanced weathering predictions (Carbon Plan)

The ocean is fighting climate change and we’re trying to help it – here’s how (The Conversation)

First French prototypes that extract CO₂ from the air offer promise and uncertainty (Le Monde)

Engineered Carbon Removal Was Supposed to Be Getting Cheaper. Prices Are Going Up. (WSJ)

PML backs call for safeguards on emerging ocean carbon removal technologies (PML)

Opening of world’s largest carbon removal plant delayed (Illuminem)

What Microsoft’s pause means for your CDR program (Critically Speaking)

A New Pilot Project Opens the Path to Net-Zero by 2030

Let’s make DAC Hubs great again (Everything & Carbon Sink)

Flower power in the greenhouse: Small strips, big impact (Carbon Drawdown Initiative)

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REPORTS

The curious case of Schrödinger’s DAC (BeZero)

2025 Annual Report (Carbon to Sea Initiative)

Microsoft’s Carbon Removal Pause Signals a Moment for Buyer Action (Chestnut Carbon)

Pricing, Attributes, and Blockers: Durable CDR Market Dynamics Through 2030 (CDR.fyi and OPIS)

Carbon removal trends in Europe, Switzerland and the United Kingdom (Climeworks)

UPCOMING EVENTS

May 2026

Carbon Removal Investment Summit 2026 | 13 May 2026 | London

(NEW) From Field to Credits: Inside the World’s First Second-Year Enhanced Rock Weathering Credit Issuance by InPlanet | 13 May 2026 | Online

(NEW) What Does a Market-Ready Reforestation Project Actually Look Like? by CEEM | 13 May 2026 | Online

The path to net zero: Carbon dioxide removals for businesses by Removall Carbon | 13 May 2026 | Online

(NEW) Raising The Bar In CDR Happy Hour! by Joseph Kochanski & Allison Stephens | 19 May 2026 | United States

Scaling CDR in the Global Hub for Finance, Policy, and Innovation by Carbon Unbound east coast | 19 & 20 May, 2026 | New York

APACdr SUMMIT by Emerald Climate | 20 May 2026 | Singapore

(NEW) From Innovation to Infrastructure for CDR in APAC by Puro.earth Events | 20 May 2026 | Singapore

Brussels Networking Event: Connecting Policy, Buyers, and Technology by Negative Emissions Platform | 20 May 2026 | Brussels

(NEW) The CORE Framework for Carbon Removal - on Scrubbing the Skies by Institute for Responsible Carbon Removal | 20 May 2026 | Online

Carbon Removal and Carbon Farming “CRCF” | 20-21 May 2026 | Brussels

(NEW) Carbon Removal Challenge Winners Showcase by OpenAir Collective | 20 May 2026 | Online

10 International Symposium on Soil Organic Matter | 25-29 May 2026 | Brazil

(NEW) From an emissions source to a carbon storage solution by ecoLocked | 26 May 2026 | Online

Remote sensing of the land biosphere to support quantification of carbon emissions and removals by the EU projects Avengers, Eye-clima & Paris | 26 May 2026 | Online

June 2026

(NEW) The State of Carbon Dioxide Removal, Edition 3 - Launch by State of Carbon Dioxide Removal | 02 June 2026 | Online

(NEW) TOCW Flagship Event - Carbon Solutions: Canada’s Competitive Edge by Toronto Climate Week | 03 June 2026

Negative Emissions Summit 2026 | 04 June 2026 | Brussels

(NEW) CO2 removal from the atmosphere – New opportunities for climate protection and innovation | 08 June 2026 | Berlin

Carbon Drawdown Symposium 2026 by Carbon Drawdown Initiative | 16–17 June 2026 | Online & Hotel Luise, Erlangen

Carbon Removal London 2026 by Supercritical | 22 June 2026 | London

Scaling CDR Summit by Isometric | 23 June 2026 | London, England

Building the CDR market of tomorrow by AlliedOffsets and LSE | 24 June 2026 | London, UK

23rd International Conference on Carbon Dioxide Utilization | 6-10 July 2026 | St.Louis, Missouri

Nordic Climate Finance Summit | 3-4 September 2026 | Oslo, Norway

Carbon Removal Policy Summit by Carbon Gap | 16 September 2026 | Brussels

CDR26–CDRANet’s 2026 conference on the future of carbon dioxide removal | 20-21 October 2026 | Vancouver

2026 North American Biochar Conference - Setting the Standard for Biochar by American Biochar Institute | November 16-18, 2026 | New Orleans, Louisiana

Carbon Removal Events Calendar

JOB OPPORTUNITIES

Octavia Carbon - Chief Financial Officer at Octavia Carbon | Nairobi, KE

“Octavia Carbon is a fast-growing climate technology company building direct air capture and carbon storage solutions in Kenya. In just over three years, the company has scaled to around 75 employees and has become one of the few companies globally to both capture and permanently store CO₂.”

Director of Test Engineering at AirCapture | Berkeley, CA

“AirCapture supply commercial and industrial customers with clean CO₂ captured from our atmosphere to radically improve the environment.”

Carbon Program Methodology Lead at Groundwork BioAg | Mazor (Hybrid)

“Groundwork BioAg is developing the biological solutions that boost crop productivity, sequester carbon, and revive soil health.”

Auditor – Carbon Removal (CDR) Projects - India (Freelance) at CERES

“CERES-CERT AG is an ISO 17065 and 17029/14065 accredited certification body based in Switzerland. We provide national and international inspection and certification services in the fields of textiles, environment, and climate.”

Location Manager at Vaulted Deep | Hutchinson, KS

“Vaulted is a waste management company that removes carbon.”

Staff Engineer at Carbon Direct | United State - Remote

Carbon Direct’s mission is to enable organizations to reduce, remove, and utilize their emissions with carbon science.”

Field Technician at UNDO | Ontario, Canada

“UNDO is tackling the greatest challenge of our time: climate change. We are a fast-growing for-profit business that is already one of the biggest carbon removal companies in the world.”

Yama - Pilot Engineer | Pilot site (Drancy)

“Yama is hiring a Pilot Engineer to operate our running Direct Air Capture pilot, drive process optimization and eventually coordinate the demonstration plant for our Low-Concentration Carbon Capture (LCCC) platform — capturing CO₂ from ambient air through to dilute gas-fired flue-gas streams.”

Head of Science of Absolute Climate

“At Absolute Climate, we’re building independent climate technology standards and quality assurance tools.”

Regulatory Manager at Loam Bio | Saint Paul, MN

“Loam Bio is on a mission to revolutionise agriculture and address climate change. Through our cutting-edge microbial technology, we are enhancing soil health, boosting crop yields, and sequestering carbon to create a sustainable future for farming.”

Head of Agriculture Operations at Terradot | Greenville, MS

“Terradot’s mission is to stabilize Earth’s climate by transforming nature’s most powerful permanent carbon removal process into a global climate solution.”

Injection Operations Manager at Charm Industrial | St. Landry, LA

“Charm Industrial’s mission is to return the atmosphere to 280 ppm CO₂. We convert excess inedible biomass into carbon-rich bio-oil and inject it into underground storage for permanent carbon removal.”

Senior Content & Communications Manager Carbon Markets at Carbonfuture | Remote in Europe

“Carbonfuture is building the trust infrastructure needed to scale durable carbon removal, a critical piece for us all to reach net zero.”

Restoration Technician at Terraformation | Kona/Kohala/Hamakua, HI

“Terraformation is committed to addressing climate change through the power of native forest restoration.”

CDRjobs Board

PODCASTS

Waste Biomass, VC Investors, Public Parks: The Unusual Carbon Removal Playbook | Graphyte | Climate CEOs: Scaling Startups

“Scaling carbon removal through existing supply chains, community-aligned infrastructure, and signing up JPMorgan in the process.

Barclay Rogers is the founder and CEO of Graphyte, focused on low-cost, permanent carbon removal using biomass burial.

Graphyte converts agricultural waste into dense carbon blocks and stores them underground, targeting sub-$100/ton durable carbon removal with high scalability.

They’re backed by leading climate investors such as Prelude Ventures, Carbon Direct Capital, Breakthrough Energy Ventures, and Overture.”

Scientists vs. Engineers, & the Commercial Pressure on Carbon Dioxide Removal—w/ Erica Dorr & Samara Vantil, Rainbow | Reversing Climate Change

“I wrote two pieces for Rainbow earlier this year. The first argued that carbon markets need field engineers, not just scientists. Erica Dorr, Rainbow’s head of science, read it and pushed back: the binary was too clean, the caricatures too neat. I wrote a response piece about her work as a scientist applying her knowledge in carbon dioxide removal. Today I brought both subjects of those essays onto the show to hash it out together.

What is science and what is engineering? It sounds like a question from your first week of college, but in carbon removal it maps directly onto how registries set requirements, how projects get certified, how you balance rigor with feasibility, and ultimately whether the whole system holds together or collapses under its own weight. Erica and Samara Vantil, one of Rainbow’s environmental engineers on the certification team, walked me through how these two disciplines actually interact on a daily basis at a working carbon registry.

The conversation went somewhere I didn’t expect. The real tension isn’t between science and engineering at all. Those two are closer to each other than either is to the commercial side. The actual friction lives between the technical teams (science and engineering alike) and the commercial pressures of needing to ship credits, sign projects, and keep the lights on. And every decision about where to set a requirement, how many samples to demand, whether to accept a conservative discount or reject a project outright, sits right in that tension.

We talked about Charm’s decision to reduce sampling, about whether quality discourse has become meaningless repetition, about the optimal number of travel deaths being non-zero, and about how you know whether you’re cutting scope for the right reasons or because you’re about to lose a deal. These are the questions that everyone in carbon markets faces and almost no one talks about publicly.”

Negative Emissions: Biochar’s test as a scalable CO2 removal | Argus

“In this episode, Shribalaji Shenbagaraj, Senior Carbon Reporter of Argus, speaks with Kavin Kandaswamy, CEO of ProClime, to examine whether biochar can transition from a project‑by‑project removal solution into a credible, investable carbon market.”

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YOUTUBE VIDEOS

Charm Industrial - A Talk with the Godfather of Modern Pyrolysis | Charm Industrial

“We recently hosted Dr. Robert Brown, godfather of modern pyrolysis, from Iowa State University for a site visit with engineers Jessica Brown, Joe Polin, and CEO Peter Reinhardt

When you get people with this much expertise in the same place, the conversation quickly moves past theory and into the harder questions: what actually works, and what holds up at scale.”

How YORD AB delivers fossil fuel reduction, carbon removal & land regeneration | The BIP IT! podcast.

“Meet YORD AB, a Swedish company that operates at the intersection of three critical sectors: energy, agriculture, and carbon management. Their mission is to tackle emissions at scale by transforming degraded lands into productive ecosystems while providing renewable energy solutions.”

New Global Emissions Projections: Scrapping the Highs & Lows with Detlef van Vuuren | Climate Chat

“In this Climate Chat episode, hosts Leon Simons and Dan Miller interview climate scientist Detlef van Vuuren about his recent paper where he lays our new “emissions scenarios” that will be used by the IPCC to predict future global warming. Since future temperatures depend on our future greenhouse gas emissions, scientists need to use emission scenarios to predict future temperatures. Past scenarios included what some scientists felt were beyond the possible worst case emissions, as well as scenarios that assumed much less emissions than currently seems feasible. Detlef and his colleagues has set forth a set of scenarios that fall in the middle of past approaches.”

Carbon Confidential with Marisa Drew, Chief Sustainability Officer, Standard Chartered | CUR8 - Carbon Removals

“Dr. Gabrielle Walker, Co-Founder and Chief Scientist at CUR8, sat down with Marisa Drew — one of the most consequential figures in sustainable finance today.

Most sustainability leaders came to the field from the outside — from policy, academia, or activism. Marisa came from investment banking. After more than two decades in leveraged finance — first at Merrill Lynch, then at Credit Suisse where she ran EMEA Investment Banking and Capital Markets — she made a deliberate bet in 2017 that the tools of capital markets were exactly what sustainable finance was missing. She was right.”

Nuclear Energy and Carbon Dioxide Removal - AirMiners Events Series | AirMiners

CDR fyi Exomad Green Market Learning Interview May 4 2026 | CDRfyi

Engineered Biochar for Carbon Capture and Resource Recovery | NEW Community

“As the global transition toward carbon neutrality accelerates, biochar-based materials are gaining increasing attention as sustainable solutions for carbon capture, energy storage, and environmental remediation. In this lecture, Prof. Wan Azlina presents recent advances in the design and valorization of biochar derived from agricultural and industrial residues, with a focus on structural engineering, surface chemistry, and hybridization with nanomaterials to enhance CO₂ adsorption and electrochemical performance.

The talk also highlights case studies from ongoing research at Universiti Putra Malaysia, including the conversion of biomass waste into high-performance carbon materials for carbon capture, energy devices, and pollutant removal. In addition, Prof. Wan Azlina discusses the role of techno-economic assessment in optimizing production pathways and Malaysia’s contribution to the global Green-CCUS initiative.”

Carbon Dioxide Removal | HASP@Hope

“Global warming is likely to exceed levels considered safe for natural ecosystems, even with aggressive reduction of greenhouse gas emissions. Scenarios to avoid dangerous levels of warming now rely on a combination of carbon dioxide removal (trapping carbon from the atmosphere and permanently storing it underground) and solar radiation management (reflecting back a fraction of the sun’s energy). Mike Philben will explore the current state of these technologies, evaluate their potential for scaling up to a useful level, and discuss their potential risks and side effects.”

Better Soil with Natural Carbon Removal: A Yale Geochemist Explains | Future In Bloom | Future in Bloom with Steph Speirs

“In this episode, Steph Speirs sits down with Dr. Noah Planavsky, a geochemist at Yale University and one of the world’s experts on enhanced rock weathering. They explore how crushing silicate rocks like basalt and spreading them on farmland can accelerate a natural process that pulls CO₂ from the atmosphere and locks it in the ocean for thousands of years. All this both improves soil health and boosts crop yields.

Dr. Planavsky breaks down the science, explains why farmers already understand soil chemistry better than most academics, and makes the case that carbon removal should benefit the communities where it operates. He shares his choice to co-found two carbon removal companies and then walk away from any financial stake so he could advocate for transparency and sound science.”

Geological Carbon Storage Atlas of Eastern Canada: CO₂ Storage & Full CCS Value Chain Cost Modeling | Canadian Discovery Ltd.

“CDL is pleased to announce the upcoming release of the Geological Carbon Storage Atlas of Eastern Canada. This work was undertaken with partial funding support from Natural Resources Canada (NRCan), with additional support from carbon removal project developer Deep Sky, and in collaboration with NRCan CanmetENERGY. Canada’s federal Carbon Management Strategy identifies carbon management—including the capture, transportation, and permanent geological storage of CO₂—as critical to achieving its climate objectives, with a significant share of emissions requiring secure, long-term subsurface containment.”

Risks and opportunities of carbon dioxide removal | SenckenbergWorld

“To limit climate change, reducing greenhouse gas emissions must be the top priority. However, to achieve greenhouse gas neutrality by mid-century, we will also need to permanently remove carbon dioxide from the atmosphere.

Options for carbon dioxide removal range from established methods such as reforestation and agroforestry to marine approaches and technological solutions such as direct air capture (DAC).

However, all of these options involve trade-offs and risks, including competition for land, additional energy demand, and potential negative impacts on biodiversity and ecosystem functions. If carefully designed and governed, these approaches can also deliver co-benefits, such as enhanced ecosystem resilience and new income opportunities. This lecture provides an overview of the current state of carbon dioxide removal and discusses how to assess its risks and opportunities in order to develop a responsible portfolio of solutions.”

Public Consultation on Global Artisan C-Sink | Carbon Standards International AG

“This session held by Luki Fathia, PM Global Artisan C-Sink and Patrizia Pschera, Chief Standard Officer at Carbon Standards International, walks you through key updates, methodological improvements, and their implications for carbon removal projects.”

Weekly Carbon Removal Updates from 04 May - 10 May 2026 | Carbon Removal Updates Bulletin

DEADLINES

The Rainbow Biogenic carbon capture and storage methodology is open for public consultation | Deadline: 21 May 2026

Gold Standard has launched its first methodology for biochar-based CDR | Consultation closes: 22 May 2026

Carbonaires launched an RFP aimed at bringing offtake-backed financing into high-quality CDR projects | Projects submission deadline: 22 May 2026

Deloitte launched an EU survey to design a carbon farming Buyers’ Club under CRCF | Deadline: 26 May 2026

Frontier & Carbon Removal Canada launched a surficial mineralization hub in Quebec | Applications for pilot and research projects are now open, with pre-applications due by 26 May 2026

Carbon Removall launched its 2026 RFP for carbon removal projects | Deadline: 29 May 2026

SICTOM PEZENAS-AGDE in southern France issued a €13.7M biochar facility tender | Submission deadline: 29 May 2026

The UpLink–World Economic Forum Innovation Challenge is open for CDR startups | Applications close 4 June 2026

(NEW) California Air Resources Board is seeking feedback through June 5, 2026, on draft regulatory concepts for the CCUDS and CDR

(NEW) Verra opened consultation on improved forest sequestration methodology | Deadline: May 6-8 June 2026

(NEW) California Energy Commission opened $11M funding for pre-commercial DAC projects | Deadline July 31, 2026

Call for Proposals: Sweden’s Energy Agency launched a $1B BECCS funding round for CO₂ capture from bioenergy | Deadline: 13 August 2026

Swedish Energy Agency opened 15M SEK funding for negative emissions R&D | Deadline: 31 August 2026

(NEW) Germany launched €5B Carbon Contracts for Difference program to support CCS and CDR | Tender submission deadline: 07 Sep 2026

Carbon Management journal calls for CDR papers | Deadline: 13 November 2026

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JUMP TO SECTION

1. This Week’s Top CDR Highlights

2. Commercial News

3. Research Papers

4. Web Posts

5. Reports

6. Upcoming Events

7. Job Opportunities

8. Podcasts

9. YouTube Videos

10. Deadlines

THIS WEEK’S TOP CDR HIGHLIGHTS

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COMMERCIAL NEWS

Living Carbon secured $500m deal with Octopus Energy Generation to restore degraded land and remove CO₂. Octopus Energy Generation is also investing nearly $13 million in Living Carbon’s CDR business (WSJ)

BTG Pactual TIG raised $1.2B for reforestation and ecosystem restoration (ESG Today)

The Naturalis Biodiversity Center pre-bought ~$59K in nature-based CDR credits via Treeconomy (Carbon Pulse)

World Bank launched a $120M ecosystem restoration bond backed by Amazon CDR deal (ESG Today)

Prithu raised $1.1M to scale nature-based CDR platform (Carbon Pulse)

CURA received $1M from NorthX Climate Tech to scale electrochemical cement and lime decarbonization (NorthX)

Captura and SAF+ International Group announced to build a French eSAF plant producing 75,000 t/yr, using green hydrogen and CO₂ from Captura’s Direct Ocean Capture (Libkedin)

Climate Impact Partners and Green Earth signed a long-term agroforestry offtake with a pharmaceutical firm for 1.5Mt CDR in Kenya (Climate Impact Partners)

Climeworks partnered with NTT DATA Group on net-zero via carbon removal (Climeworks)

Climate Impact Partners & Aviva Investors launched a forest project targeting up to 6Mt CO₂ removal (ESG Today)

Douglas County approved a $7.88M biochar and recycling facility in Colorado (Biochar Today)

Dalhousie University secured $2.1M from Research Nova Scotia for research including ocean CDR (Dalhousie University)

ENGIE partnered with ‎Deep Sky to purchase up to 15,000 CDR credits from Deep Sky’s DAC facilities (PR Newswire)

Boeing secured 20,000 tonnes of CDR via Supercritical (ESG News)

Carbon Direct & Arca partnered to commercialize industrial mineralization CDR credits (Carbon Direct)

Carbon to Sea Canada launched a collaborative ocean alkalinity enhancement initiatives in Halifax (Carbon to Sea)

Verde and Isometric partnered to scale certified biochar credits for infrastructure use (PR Newswire)

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RESEARCH PAPERS

Amazonian understory forests change phosphorus acquisition strategies under elevated CO2

‎Authors: Nathielly P. Martins, Lucia Fuchslueger, Laynara F. Lugli, et al.

Synopsis: In this experiment in the Amazon rainforest, elevated CO₂ (~+300 ppm) was tested in a phosphorus-limited forest understory. Results show plants adjusted root strategies differently across litter and soil layers: litter roots increased foraging efficiency, while soil roots enhanced mycorrhizal associations. However, elevated CO₂ intensified phosphorus competition, reduced soil organic P, and strengthened nutrient constraints, potentially limiting the forest’s long-term carbon sink capacity.

More pronounced El Niño-like warming in boreal autumn and winter under CO2 removal scenario

Authors: Chunhong Huo, Shijie Zhou, and Ping Huang

Synopsis: This idealized study examines how CDR affects seasonal sea surface temperature (SST) patterns in the tropical Pacific. Even when returning to a 2°C warming target, the El Niño–Southern Oscillation–like warming response differs between CO₂ increase and decrease phases. During CDR (CO₂ ramp-down), stronger warming occurs in boreal autumn–winter due to shifts in wind patterns, ocean circulation, and a southward shift of the Intertropical Convergence Zone, altering ocean heat redistribution.

The State of Macroalgae Carbon Dioxide Removal: Insights from a Methodology Development Team

Authors: Donald Edward Martocello, Thomas Storwick, Carolyn Buchwald

Synopsis: This perspective examines efforts to develop a credible carbon credit framework for macroalgae-based CDR. Although Macroalgae Cultivation is widely proposed as a scalable ocean CDR pathway, field validation and agreed crediting standards remain limited. The attempt highlights major scientific and practical challenges, emphasizing the need for public investment, improved monitoring (including satellite remote sensing), and advanced computational tools such as AI to enable reliable and scalable macroalgae CDR systems.

From carbon sink to carbon source: evaluating Portuguese forest carbon dynamics under improved accounting methodologies

Authors: L. Tesch, B.S. Bandarra, H. Craveiro, H. Gervásio

Synopsis: Portugal forests may be a net carbon source rather than a sink. An improved model accounting for wildfires and logging shows emissions of ~2500 kt CO₂ annually since the early 2000s, contradicting near-neutral official estimates. Underestimated wildfire impacts and data gaps distort inventories, highlighting the need for better monitoring, accounting, and climate-adaptive forest management.

Lagrangian Flux Decomposition (LFD): Fast Probabilistic Marine Carbon Dioxide Removal Modeling via Stochastic Lagrangian Transport and Carbonate System Accounting

Authors: Jordan Hood Miller, Trond Kristiansen, and Dr. Momme Butenschön

Synopsis: Marine Carbon Dioxide Removal needs scalable modeling to assess impact and verify carbon credits. This study introduces the Lagrangian Flux Decomposition framework, which efficiently tracks air–sea CO₂ flux changes using stochastic particle methods. It enables high-resolution global analysis, quantifies uncertainty, and supports planning, monitoring, and verification of mCDR projects.

Managed rainforests support higher carbon density and sequestration in the Congo Basin

Authors: Le Bienfaiteur Sagang, Ricardo Dalagnol, Lee White, et al.

Synopsis: This study shows land-use change strongly shapes carbon dynamics in the Congo Basin. Logged forests hold ~8% less aboveground carbon, while degraded areas lose up to 50%. Despite pressures, the region remains a net carbon sink, driven mainly by old-growth forests, logging concessions, and protected areas. Sustainable forest management is critical to maintaining carbon storage and mitigating emissions.

Carbon dioxide removal efficiency of co-applied and co-pyrolyzed feedstocks for enhanced rock weathering and biochar in a sandy soil

Authors: Maria-Elena Vorrath, Johannes, Meyer zu Drewer, Ingrid Smet, et al.

Synopsis: This study examines combined land-based carbon dioxide removal using Enhanced Rock Weathering and Pyrogenic Carbon Capture and Storage. Results show that co-applying biochar with minerals (especially Mg-rich rocks like peridotite and basanite) can enhance alkalinity production and carbon sequestration, though outcomes vary by material type. While some combinations improve stable carbon storage, others reduce geogenic carbon sinks, highlighting strong trade-offs in ERW–PyCCS integration.

Deliberative polling increases non-expert confidence in assessments about carbon dioxide removal technologies

Authors: Endre Tvinnereim, Gisle Andersen, Christine Merk, Marie Louise Ljones and Åsta Dyrnes Nordø

Synopsis: This study simulates a public deliberation process in Norway on CDR technologies. Using online groups and surveys, it finds that deliberation significantly increases participants’ support for Bioenergy with Carbon Capture and Storage while reducing “don’t know” responses across CDR options. Discussions focused on feasibility, effectiveness, and risks, highlighting deliberation as a useful tool for informing public engagement in net-zero policy design.

A human rights-based approach to marine carbon dioxide removal governance - Preprint

Authors: Sara L. Seck, Cecilia Engler

Synopsis: This article examines governance of Marine Carbon Dioxide Removal in a fragmented international legal context. It argues that a human rights-based approach—grounded in instruments like the UN recognition of the right to a clean, healthy and sustainable environment and business and human rights principles—should guide states, companies, and researchers. Such frameworks aim to ensure mCDR development does not impose disproportionate burdens on present or future generations.

Sustainable Process Systems Modeling of a Geothermal Powered Direct Air Capture and District Heating Concept

Authors: Haris Ishaq

Synopsis: In this study, integrating Geothermal Energy with Direct Air Capture and district heating creates a carbon-negative system. It captures ~666.6 tCO₂/year while supplying heat to 124 households. Results show performance depends on geothermal conditions, with optimized pressures improving CO₂ capture efficiency and system reliability.

Molecular Views of Mineral Carbonation: Reaction of CO2 with the Wollastonite (100) Surface

Authors: Andrea Conti, Luca Lezuo, Alexander Hoheneder, et al.

Synopsis: This study investigates how Wollastonite captures CO₂ at the atomic scale. Using Noncontact Atomic Force Microscopy and Density Functional Theory, it shows that a stable water layer on the mineral surface enables nearly barrier-free CO₂ chemisorption and carbonate formation. The findings reveal a water-assisted, gas-phase carbonation pathway that supports long-term carbon sequestration without requiring full mineral dissolution.

A field trial demonstrating CO2 removal through enhanced weathering in mine tailings: design, commissioning and early performance of a European Union-funded pilot

Authors: Rosalia Shiimi, Will Savage, Evangelos Mouchos, Ottomar Brussee, Erik Ronne, Steven Pearce

Synopsis: This EU-funded pilot within the C-SINK project tests ERW in mine tailings at Kevitsa Mine. A monitored test cell tracks CO₂, O₂, and geochemical changes to quantify carbon dioxide removal and carbonate formation. The study develops a scalable monitoring, reporting, and verification (MRV) framework linking pore-scale chemistry and gas fluxes to long-term carbon storage in tailings facilities.

Designing National Forest Inventories for Accurate Estimation of Soil Carbon Change

Authors: Robert W. Buchkowski, Alexander Polussa, Mark A. Bradford

Synopsis: Using data from the Canada’s National Forest Inventory, this study assesses how well soil carbon changes can be detected over time. High spatial variability in soil carbon makes small changes difficult to measure, with minimum detectable differences exceeding typical long-term trends. Simulations suggest that more sampling and subsampling could improve detection, while some observed trends may reflect statistical artifacts rather than real changes, highlighting challenges in national soil carbon accounting.

High frequency in situ total alkalinity measurement for monitoring ocean alkalinity enhancement field trials

Authors: Alireza Zabihihesari, Will Burt, Colin Sonnichsen, et al.

Synopsis: This study reports the first field use of an autonomous Lab-on-a-Chip system during an Ocean Alkalinity Enhancement trial using magnesium hydroxide. High-frequency in situ measurements showed a ~40 µmol/kg increase in total alkalinity and evidence of cumulative “system memory,” where alkalinity did not return to baseline between dosing events. The results demonstrate that autonomous sensing can capture fine-scale variability needed for monitoring, reporting, and verification of ocean-based carbon dioxide removal.

Use of Nanomaterials for Carbon Sequestration in Soil

Authors: Arathi Chandran, Ashok Kumar

Synopsis: Soil Carbon Sequestration is a key climate solution, with soils storing far more carbon than the atmosphere. However, land-use change and intensive agriculture have weakened this sink. Emerging Nanotechnology approaches—using materials like nano-biochar and graphene—can enhance carbon stability, improve soil health, and address limits of conventional sequestration methods.

The Effect of Biochar on Saline-alkali soil Amelioration and its Carbon Sequestration and Emission Reduction Effects

Authors: Xingyao Meng, Liuxia Li, Hanjie Yang, Zifan Huang, Jinglin Li, Pan Wang & Lianhai Ren

Synopsis: This study presents that biochar offers strong potential for saline-alkali soil restoration and carbon sequestration. It improves soil properties, supports plant growth, regulates microbial nutrient cycles, and alters salt dynamics. Biochar also stores carbon directly and reduces Nitrous Oxide and Methane emissions, forming an integrated soil-amendment and climate mitigation pathway.

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WEB POSTS

Carbon to Sea Announces 2026 Research Fellowship Program Cohort (Carbon to Sea Initiative)

Solving distributed biochar’s certification problem (Isometric)

International Removal Credits for the EU (DVNE)

Opinion: Beyond CDR: The Unexpected Legacy of Early Market-Makers (Carbon Herald)

Designing web maps for our highest-resolution dataset yet (Carbon Plan)

Bridging Direct Air Capture and CO2 Conversion through Redox-Active Systems (ACS Publications)

EDF Launches New Research Program on Phytoplankton Carbon Solutions (EDF)

Ongoing Dilligence: Chasing Offtake In Carbon Removal Today (Carbon Herald)

The Folly of Funding Direct Air Capture (Real Clear Energy)

New review outlines advances in dual-functional materials that combine atmospheric carbon removal with in-situ conversion (Eurek Alert)

A Watershed Reveals Carbon Removal, Soil Buffering, and Metal Stabilization (Remineralize the Earth)

Carbon capture and mineralisation pilots in the Middle East (GeoExPro)

The Bridge to Bankability: What Carbon Removal Developers Are Really Asking For (CUR8)

Carbon Removal Requirs Both Trees and Technologies (Nature)

Coalition urges CDR share of international credits for EU 2040 climate targets (Carbon Pulse)

Microorganisms lock up carbon in soil (Nature Reviews Microbiology)

A New EU Framework for Carbon Removals and Carbon Farming (Herbert Smith Freehills Kramer)

New digital framework to help farmers unlock gigaton-scale atmospheric carbon dioxide removal (University of Sheffield)

DalSolutions: How Dalhousie is helping to transform Nova Scotia into a global hub for carbon removal (Dal News)

Carbon removal leader say Microsoft pause isn’t a death blow (Axios)

Public Testimony Divergence at Hearing for Proposed Lyndon Carbon Removal Facility (Biochar Today)

Microsoft & CDR: What Could This Mean for the Market? (Sylvera)

Gammon Construction team uses low-carbon concrete in Hong Kong (GCR)

Gross Written Carbon (Kita)

Delta Wetlands Project Tests Carbon Storage Potential (California Department of Water Resources)

Carbon standard announces collaboration with CDR developer to advance engineered biochar certification (Carbon Pulse)

We should ask polluters to pay for carbon removal (Everything & The Carbon Sink)

Taking out the carbon trash (CDRANet)

Announcing the Everything and the Carbon Sink 2026 RFP for a premium carbon removal credit (Everything & The Carbon Sink)

How to Trump-ify DOE’s carbon removal purchasing efforts (Everything & The Carbon Sink)

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REPORTS

Using International Carbon Credits to achieve a 90% emission reduction by 2040 (The Global South Carbon Dioxide Removal Coalition & Negative Emissions Platform)

Carbon removal, from air to sea: Canada, a leader in restoring oceans ecosystems and fighting climate change (Senate of Canada)

Massachusetts Carbon Dioxide Removal Study (RMI)

Leaning on Uncertainty: Are European countries overrelying on carbon removals to reach climate targets? (Carbon Market Watch)

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UPCOMING EVENTS

May 2026

CDR Events at Climate Week Zurich | 4-9 May 2026

(NEW) Nuclear Energy and Carbon Dioxide Removal by AirMiners | 05 May 2026 | Online

Upgrade Your Carbon Procurement Strategy: Building a High-Integrity Carbon Portfolio by Trellis | 05 May 2026 | Online

Getting Carbon Removal Right: A Buyer’s Guide to Quality, Strategy, and First Steps by Unbound | 05 May 2026 | Online

Inside Carbon Storage: A Guided Tour Underground by Flums Switzerland | 05 May 2026

Getting Carbon Removal Right: A Buyer’s Guide to Quality, Strategy, and First Steps by Carbon Unbound | 05 May 2026 | Online

Geological Carbon Storage Atlas of Eastern Canada: Part 2 by CDL | 05 May 2026 | Online

Unlocking Value in Lower-Carbon Cement by Sylvera | 06 May 2026 | Online

Building Africa as a Global CDR Hub: Innovation & Entrepreneurship by Emerging Climate Frontiers | 06 May 2026 | Online

(NEW) Norway x Switzerland: Implementation of CDR pilot transfers | 06 May 2026 | Zurich

(NEW) Carbon Confidential, with Marisa Drew by CUR8 | 07 May 2026 | Online

Operational net zero by Milkywire | 07 May 2026 | Online

From Waste to Carbon Removal: Biochar Coffee & Tea in Nature by BCHAR | 07 May 2026 | Switzerland

(NEW) Building An African Partnership For Responsible mCDR Research, Development, And Demonstration | 07 May 2026 | Online

Two events. One day for CDR by First Climate | 07 May 2026 | Zurich

Evolutions in measurement tools and guidance: understanding Verra’s soil sampling handbook and its implications on SOC measurement by ChrysaLabs | 07 May 2026 | Online

YCNCC Spring Symposium + Fifth Anniversary by Yale Center for Natural Carbon Capture | 7-8 May 2026 | New Haven

Achieving net zero: CO₂ removal in focus by Swiss Carbon Removal Platform | 09 May 2026 | Zurich

Carbon Removal Investment Summit 2026 | 13 May 2026 | London

Carbon Removal Investment Summit 2026 by CCarbon | 13 May 2026 | London, UK

The path to net zero: Carbon dioxide removals for businesses by Removall Carbon | 13 May 2026 | Online

Scaling CDR in the Global Hub for Finance, Policy, and Innovation by Carbon Unbound east coast | 19 & 20 May, 2026 | New York

APACdr SUMMIT by Emerald Climate | 20 May 2026 | Singapore

(NEW) Brussels Networking Event: Connecting Policy, Buyers, and Technology by Negative Emissions Platform | 20 May 2026 | Brussels

Carbon Removal and Carbon Farming “CRCF” | 20-21 May 2026 | Brussels

10 International Symposium on Soil Organic Matter | 25-29 May 2026 | Brazil

Remote sensing of the land biosphere to support quantification of carbon emissions and removals by the EU projects Avengers, Eye-clima & Paris | 26 May 2026 | Online

June 2026

Negative Emissions Summit 2026 | 04 June 2026 | Brussels

Carbon Drawdown Symposium 2026 by Carbon Drawdown Initiative | 16–17 June 2026 | Online & Hotel Luise, Erlangen

Carbon Removal London 2026 by Supercritical | 22 June 2026 | London

Scaling CDR Summit by Isometric | 23 June 2026 | London, England

(NEW) Building the CDR market of tomorrow by AlliedOffsets and LSE | 24 June 2026 | London, UK

23rd International Conference on Carbon Dioxide Utilization | 6-10 July 2026 | St.Louis, Missouri

Nordic Climate Finance Summit | 3-4 September 2026 | Oslo, Norway

(NEW) Carbon Removal Policy Summit by Carbon Gap | 16 September 2026 | Brussels

CDR26–CDRANet’s 2026 conference on the future of carbon dioxide removal | 20-21 October 2026 | Vancouver

2026 North American Biochar Conference - Setting the Standard for Biochar by American Biochar Institute | November 16-18, 2026 | New Orleans, Louisiana

Carbon Removal Events Calendar

JOB OPPORTUNITIES

Managing Director for Duke mCDR Hub at Duke University

“Duke University is seeking an entrepreneurial and strategic leader to help build and launch its Marine Carbon Dioxide Removal (mCDR) Hub. The Managing Director will work closely with Duke faculty across multiple schools to develop a bold research portfolio, secure sustainable funding, convene global leaders, and position Duke as a trusted authority on responsible marine carbon dioxide removal. This role is ideally suited for a mission-driven professional who thrives at the intersection of science, policy, and strategy, and who is excited to build something new with the potential for global impact.”

Product Designer at Patch | San Francisco

“Patch exists to rebalance the planet by making environmental commodities easier to understand, trust, and buy at scale. Their platform routes hundreds of millions of dollars into carbon removal, renewable energy, sustainable aviation fuel, and other environmental markets.”

Business Development Intern at Brineworks | Amsterdam, North Holland, Netherlands

“Brineworks is building the electrolyzer of the future — a patented system that powers ultra-low-cost Direct Air Capture using intermittent renewables and low-cost abundant materials.”

Procurement Specialist at Mission Zero Technologies | London, United Kingdom

“Mission Zero Technologies is a London-based climate-tech start-up, working to reframe how the world views carbon in order to enable a thriving planet. Since 2020, we have pioneered the world’s most versatile direct air capture (DAC) technology to recover historic CO₂ emissions from the atmosphere, anywhere, at any scale.”

Commissioning Engineer – Biochar Production at Onnu | Maidenhead, Berkshire (Hybrid)

“Onnu’s mission is to deliver what the world needs most – substantial and scalable carbon removal.”

Legal Manager at Mati Carbon | Delhi

“Mati Carbon is an award-winning durable carbon removal enterprise with a mission to empower 100 million smallholder farmers by 2040.”

Head of Agriculture Operations at Terradot | Greenville, MS

“Terradot’s mission is to stabilize Earth’s climate by transforming nature’s most powerful permanent carbon removal process into a global climate solution.”

Director of Business Development Commercial at Planetary Technologies | Ottawa, Ontario (Remote)

“Planetary Technologies’ vision is to protect and restore the ocean and climate for generations to come. We do this by enhancing the ocean’s natural ability to fight climate change through carbon dioxide removal and storage.”

Senior People Manager / HRBP - Production at Reverion | Eresing, Munich

“As spin-off from the TU Munich, Reverion is a tech-driven climate startup paving the way to 100% renewable, decarbonized future by making the most of biogas.”

Content & Lead Generation Intern at Nordic Carbon | Hellerup, Region of Southern Denmark, Denmark

“Nordic Carbon develops scalable biochar solutions that turn agricultural and forestry residues into permanent carbon removal.”

Climate Policy & Carbon Markets Intern at AirCapture | Berkeley, CA

“AirCapture provide commercial and industrial customers Beverage Grade CO2 captured from the atmosphere to radically disrupt legacy distribution models – giving you control of your supply chain, securing your CO2 and operations.”

Lead Mechanical Engineer (100%) at Climeworks | Opfikon, Zurich, Switzerland

“Climeworks is a leading high-quality carbon removal provider, combining decades of expertise in DAC technology with a holistic approach to carbon removal solutions.”

CDRjobs Board

PODCASTS

CDR Buyers Deep Dive - Part 3: The Future of Buying (in a post-Microsoft world?) | The Carbon Removal Show

“In the final episode of our CDR Buyers Deep Dive, Tom and Emily ask what needs to change if carbon removal buying is going to move from early adopters to something much bigger. What would make buying easier, less risky, more attractive, and more scalable? And what happens when the market’s biggest buyer suddenly causes a wobble?”

Carbon Removal Ex-Situ Enhanced Mineralization | Oxford Institute for Energy Studies

Hasan Muslemani speaks to Naser Odeh about ex-situ enhanced mineralisation (ESEM) - an emerging carbon removal solution with strong potential to support climate targets.

Carbon markets, forestry removals, and the Carbon Bridge program | The Green Insider Powered by eRENEWABLE

“Lizzy Aldrich of Anew Climate joins us to break down what’s changing in carbon markets—and what “high-integrity” supply looks like on the ground. We dig into why forestry remains central, how RNG projects pencil out, and what the shift toward insetting means for corporate climate plans. Plus: Carbon Bridge, a deferred-payment approach to help companies move faster toward 2030 targets.”

Insuring Corsia: What lies ahead? | Argus Media

“In this episode, Alexandra Luca talks with Chris Slater, CEO of Oka - a leading carbon insurance provider supporting credits in the initial phase of the Carbon Offsetting and Reduction Scheme for International Aviation (Corsia). They discuss Oka’s current insurance-based credits pipeline, recent challenges for insurers, and future developments in the Corsia market.”

How Symbiosis is Building Demand for High-Integrity Forest Carbon | Forest Invest Podcast

“In this episode, Shauna Matkovich joined by Julia Strong, Founder and Executive Director of Symbiosis Coalition. In this conversation, Julia explains how buyer-led demand can help scale high-integrity forest carbon projects and mobilize capital into nature-based carbon removal. We talk about the role of long-term offtake agreements, the quality criteria Symbiosis uses to evaluate developers, and the common reasons projects fall short in the RFP process. Julia also shares what investors and project developers need to understand about readiness, benefit sharing, and the future of forest carbon as an investable asset class.”

Carbon removal is stuck in low earth orbit. Here’s how we get out. | Carbon Curve

The Carbon Curve

Carbon removal is stuck in low earth orbit. Here's how we get out.

Episode 64 is with Dr. Julio Friedmann, Chief Scientist at Carbon Direct…

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a month ago · 1 like · Na’im Merchant

“In this episode, Na’im speaks with Dr. Julio Friedmann about Carbon Direct’s recent publication “ 5 Pillars of Successful Project Deployment and Delivery” on what the carbon dioxide removal industry needs to de-risk projects in order to attract new buyers and to stand up infrastructure-scale carbon removal projects.”

Should Carbon Dioxide Removal Rejoin the Mainstream Carbon Market?—w/ Martin Freimüller of Octavia Carbon | Reversing Climate Change

“Martin Freimüller is the co-founder and CEO of Octavia Carbon, a direct air capture company in Kenya. He’s been listening to this show since 2020 and credits it, generously, with pulling him into carbon removal in the first place.

He’s also someone who thought I’d taken a wrong turn lately with grim prognostications, and he had an idea he wanted to talk through.

His pitch: carbon dioxide removal is the prodigal son, and it’s time to come home. We’ve spent the last few years building CDR as a separate category, defining ourselves against the “legacy” voluntary carbon market, trashing clean cooking credits and REDD+ and Verra and basically everyone who came before us.

Martin thinks that was a mistake, and he includes himself in the indictment. He was on stage a year ago telling investors about DAC’s explosive growth. Now he’s calling clean cooking founders and asking who their buyers are.

He shared some numbers that caught my attention: there are roughly 200 corporates that have ever bought carbon removal. There are about 35,000 buying carbon credits more broadly, and about 3 million individuals. Article 6.2 bilateral deals and 6.4-based transactions are quietly channeling tens of millions of tons of demand per year. The broader VCM is growing. CDR is not, at least not in real revenue recognized terms. Martin’s argument is that instead of fighting over the tiny pot of dedicated CDR buyers, we should be figuring out how to sell into the market that actually exists and is expanding.”

DIGGING DEEP with Gabrielle Walker: A Life in Climate | The CDR Policy Scoop

“Gabrielle Walker. You probably know her as a scientist, author, science communicator, co-founder of CUR8 and Rethinking Removals. She has spent three decades at the intersection of climate science and storytelling. Too much to confine to a 30 minute episode.

Introducing our new series, Digging Deep, we kick off our special long-form conversation where Sebastian Manhart and Eve Tamme have the privilege to go beyond the usual format to go deeper into the person. How Gabrielle thinks, her lived experiences, and how it has shaped her work in carbon removal and beyond.

The conversation moves from her earliest encounters with nature, through years as a science journalist at Nature and the BBC, multiple expeditions to Antarctica, and a career pivot from covering climate change to trying to solve it. Gabrielle reflects on what it means to hold doubt as a strength, how she has changed her mind on some of the biggest questions in CDR, and why she believes curiosity may be the most underrated skill in the field.

The discussion also gets practical: what it actually takes to move corporate buyers toward carbon removal, why the narrative needs to shift, and how Gabrielle thinks about building markets that can unlock real capital for the people building solutions.”

Insurance, Buffers, and the Permanence Trust - with Natalia Dorfman | The CDR Policy Scoop

“Who should hold permanence liability, for how long, and how?

In this episode of the CDR Policy Scoop, Eve and Sebastian speak with Natalia Dorfman has spent the last four years building Kita into the carbon market’s leading insurance specialist. She make the case that the market is finally ready to move beyond buffer pools, and that the tools to do it already exist.

Natalia draws a sharp distinction between short and long-term liability windows, explains why buffers were a necessary starting point but were never designed for perpetuity, and lays out why standards don’t actually want to be holding that risk.

That sets up the main event: the Permanence Trust, a feasibility study led by the American Forest Foundation with Kita as a supporting partner. The idea is straightforward in principle, an endowment-style fund that grows to cover reversals over time. But the questions around standards buy-in, cost structure, and what “replacement” actually means for capital markets are anything but. Natalia takes them head on.”

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YOUTUBE VIDEOS

CHAR: Fighting Wildfires with Biochar | Carbonfuture

“A film by Carbonfuture & Ibero Massa Florestal

Narrated by Sebastian Manhart, Senior Policy Advisor, Carbonfuture

Every year, wildfires burn hundreds of thousands of hectares across Portugal, releasing carbon that took decades to store. Ibero Massa Florestal decided to do something about it.

“CHAR” takes you to the forests, factory, and farms of Portugal, where Ibero Massa Florestal has built something rare: a solution that reduces wildfire risk, regenerates degraded soils, supports rural communities, and removes carbon from the atmosphere.”

Exomad Green × Supercritical: Inside the 500,000-Tonne CDR Deal and the Maturing Carbon Market | Exomad Green

“In this deep dive, Exomad Green and Supercritical unpack their landmark agreement covering 500,000 tonnes of carbon removal and what it signals for the future of the carbon market.

We explore how buyer behavior is evolving, and how the market is rapidly maturing toward rigor, verification, and long-term climate impact—featuring insights inspired by perspectives from some of the world’s leading carbon dioxide removal (CDR) suppliers.”

Biochar Carbon Removal: Finally Ready for Primetime? with Alan Ransil | Climate Chat

“In this Climate Chat episode, host Dan Miller interview Devonian Systems co-founder and CEO Alan Ransil about their approach to producing biochar. Biochar is produced when biomass is burned without the presence of oxygen, a process know as pyrolysis. Wood treated this way is also known as charcoal. Biochar is a very stable form of carbon and, therefore, it is a way to sequester CO2 from the atmosphere. While biochar has been produced for thousands of years, it is yet to scale up to a major climate solution. Devonian systems hopes to change that.”

Amazon Forest Root Adaptations to Elevated Carbon Dioxide | Remove and Reflect Podcast

“This episode covers a study that examines how Amazonian understory forests adapt their phosphorus acquisition strategies in response to elevated CO2 levels. Using open-top chambers near Manaus, researchers discovered that plants employ spatially divergent root adaptations to overcome nutrient scarcity. In the litter layer, roots become longer and thinner to increase foraging efficiency, while soil-based roots shift toward collaborative strategies by increasing mycorrhizal colonization. The findings also reveal a significant reduction in soil organic phosphorus, suggesting intensified competition between plants and microorganisms. Ultimately, the research indicates that the Amazon’s ability to act as a carbon sink depends heavily on these flexible biological mechanisms for securing vital nutrients.”

The GigaTen Episode #17 | Tree+

“In this 17th Episode of The GigaTen, we get into the details of CDR policy around the world and with a touch at the finish on the Microsoft pause.”

AirMiners: What’s Hot in Carbon Doxide Removal, April 2026 | AirMiners

Leaning on uncertainty: How Europe’s flawed approach to carbon removals threatens the climate | Carbon Market Watch

“To reach their climate targets, European governments are increasingly relying on technologies and processes to remove CO2 from the atmosphere. Carbon dioxide removal (CDR) is idealised as a readily available and reliable method and has been adopted in various European climate strategies.

However, CDR is more difficult to implement than is often assumed and presents significant challenges. If deployed correctly, as a supplement to emission reductions, it can help the European Union reach climate neutrality. But, CDR can undermine and impede real climate action if it becomes a substitute for, rather than a supplement to, rapid, deep, and sustained emissions reductions.

This event was hosted by MEP Lena Schilling (Green/EFA) and marked the launch of Carbon Market Watch’s Leaning on Uncertainty reports, which assess the reliance of European countries and the European Union on carbon removals and land-based carbon sequestration. We explored not only what the findings reveal about current trends and risks, but also what they mean from a legal and political perspective, examining legal guardrails to CDR and implications for the post-2030 climate policy package in the European Union.”

What About Carbon Removal? Climate solution or corporate distraction? | Fossil vs Future

“To mitigate climate change, we must reduce new emissions. But what about the greenhouse gases already in the atmosphere? And what about the emissions that we can’t easily reduce with existing technologies?

In this episode, James and Daisy discuss carbon dioxide removal (CDR). How is it done? What does it cost? And do we really need it?”

NIM Industry Insights Series - Beyond Capture: CO₂ Mineralisation and Carbon Circularity | Net-Zero Industries Mission

“The NIM Industry Insights webinar “Beyond Capture: CO₂ Mineralisation and Carbon Circularity for a Net-Zero Industry”, held on 21 April 2026, brought together 90 participants from over 14 countries to explore how CO₂ mineralisation and carbon circularity can support industrial decarbonisation. A key message emerged throughout the session: CO₂ should no longer be seen as waste, but as a resource. From permanent storage to the production of valuable materials, innovative approaches are transforming carbon into a building block for a net-zero industry.

Experts from industry, research, and policy shared insights into real-world projects already scaling globally, from Iceland to Saudi Arabia and China, and discussed both the challenges and opportunities of moving from pilot to industrial deployment. The session highlighted the importance of combining technical feasibility with economic viability to accelerate implementation and underlined the growing role of international collaboration in advancing carbon management solutions.”

Turning Roads Into Carbon Sinks: The Low Carbon Materials Story | Blue Earth

“In this episode, Natasha Boulding, co-founder and CEO of Low Carbon Materials and Blue Earth BE100 winner, shares how her team is transforming the built environment into part of the climate solution, starting with a carbon-negative aggregate used in roads, concrete, and infrastructure.

From spinning out of academia to delivering over 40 real-world construction projects, Natasha breaks down the journey from lab to large-scale deployment, the challenge of breaking into a risk-averse industry, and why scaling production is the next big unlock.

With demand already outpacing supply, this conversation explores how Low Carbon Materials is building trust, driving adoption, and shaping the future of sustainable construction at scale.”

The Future of Marine CDR: Scaling Ocean Alkalinity Enhancement with Planetary | Nature Tech Collective

“This session, hosted by Amal Ketata (Founder & CEO, Nui) and Paige Perillat Piratoine (Community Lead, Nature Tech Collective), is part of the Ocean Series Webinar co-organized by the Nature Tech Collective and Nui.

The discussion focuses on marine carbon dioxide removal (mCDR) and, in particular, on Ocean Alkalinity Enhancement (OAE), one of the most advanced and scalable approaches in this field.”

From Forests to Coastlines: A Deep Dive into Symbiosis’s Updated Quality Criteria | Symbiosis Coalition

“In this webinar, Symbiosis presents a deep dive into our updated Quality Criteria, now expanded to include mangrove restoration alongside reforestation and agroforestry. The updated criteria strengthen guidance across the Symbiosis quality pillars, reflect the latest science and input from experts across academia, NGOs, and the private sector, and lay the groundwork for our upcoming mangroves RFP.

This webinar explores the science and thinking behind our updated criteria, and what it signals for the future of nature-based carbon removal.”

Weekly Carbon Removal Updates from 27 April - 03 May 2026 | Carbon Removal Updates Bulletin

DEADLINES

Government of Canada launched a call for bids to enable the federal departments to buy $10M CAD CDR credits from Canadian projects | Deadline: 11 May 2026

The Rainbow Biogenic carbon capture and storage methodology is open for public consultation | Deadline: 21 May 2026

Gold Standard has launched its first methodology for biochar-based CDR | Consultation closes: 22 May 2026

(NEW) Carbonaires launched an RFP aimed at bringing offtake-backed financing into high-quality CDR projects | Projects submission deadline: 22 May 2026

Deloitte launched an EU survey to design a carbon farming Buyers’ Club under CRCF | Deadline: 26 May 2026

(NEW) Frontier & Carbon Removal Canada launched a surficial mineralization hub in Quebec | Applications for pilot and research projects are now open, with pre-applications due by 26 May 2026

Carbon Removall launched its 2026 RFP for carbon removal projects | Deadline: 29 May 2026

SICTOM PEZENAS-AGDE in southern France issued a €13.7M biochar facility tender | Submission deadline: 29 May 2026

The UpLink–World Economic Forum Innovation Challenge is open for CDR startups | Applications close 4 June 2026

Call for Proposals: Sweden’s Energy Agency launched a $1B BECCS funding round for CO₂ capture from bioenergy | Deadline: 13 August 2026

Swedish Energy Agency opened 15M SEK funding for negative emissions R&D | Deadline: 31 August 2026

Carbon Management journal calls for CDR papers | Deadline: 13 November 2026

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1. This Week’s Top CDR Highlights

2. Commercial News

3. Research Papers

4. Web Posts

5. Reports

6. Upcoming Events

7. Job Opportunities

8. Podcasts

9. YouTube Videos

10. Deadlines

THIS WEEK’S TOP CDR UPDATES

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COMMERCIAL NEWS

Carbonyx raised $1.2M to convert mining waste into silica & carbonates for CDR (Betakit)

Alt Carbon delivered 2,500t ERW credits to Mitsui O.S.K. Lines (Alt Carbon)

BCarbon issued 80,000 verified CDR credits from Carbon Rho’s Red River pilot project (Decarbon Fuse)

CURA Climate and TITAN Group partnered to validate low-carbon cement technology (Cura Climate)

Mangrove Systems acquired biochar CDR platform Grain Ecosystem (ESG Today)

Kita & Gallagher launched risk intelligence service for CDR projects (Kita)

Capture6 secured financing to scale brine-to-freshwater while removing up to 25,000 tCO₂/yr (LinkedIn)

Verra issued the first credits under its afforestation, reforestation, and revegetation (ARR) methodology, VM0047 (Verra)

Elkem sold biocarbon assets to CHAR Technologies, entering a 5-year supply agreement for 62,500 tonnes (Biochar Today)

Altitude partnered with Engrow for +425,000t CDRs from Biochar Facilities in India (Altitude Carbon)

Isometric expanded into Environmental Attribute Certificates, becoming the first certifier to support CDR, superpollutant reduction, and EACs on a single registry (Isometric)

Chestnut Carbon doubled its footprint in Southeast U.S. to nearly 70,000 acres of restored forests (PR Newswire)

Three Tigasfera biochar facilities added to Puro.earth’s supplier list (LinkedIn)

Climate Impact Partners partnered with Aviva Investors on Colombian afforestation project (Climate Impact Partners)

Climeworks & Stockholm Exergi partnered on BECCS project and targets 800,000 tCO₂/yr from 2028 (LinkedIn)

Verde Resources & Oregon Biochar Solutions partnered to integrate biochar into asphalt (Biochar Today)

NoviqTech’s Coralia and A Healthier Earth launched 2Mt biochar project generating 550k credits (Biochar Today)

Canadian Discovery Ltd. released the geological carbon storage atlas of Eastern Canada (CDL)

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RESEARCH PAPERS

Assessing Urban Green Roofs for CO2 Removal via Enhanced Rock Weathering in Europe

Authors: Liam A. Bullock, Rasesh Pokharel, Amy Lewis, et al.

Synopsis: This conceptual study evaluates ERW applied to urban green roofs as a carbon dioxide removal strategy. It estimates that, under ideal conditions, European rooftops could remove tens of millions of tonnes of CO₂ by 2060, with global potential reaching hundreds of millions of tonnes annually. Beyond CDR, ERW green roofs may improve energy efficiency and reduce evaporation, but real-world feasibility depends on structural limits, climate conditions, costs, and policy support.

The Legal Framework for Direct Ocean Carbon Capture and Storage (Volume 1: International Law)

Authors: Romany M. Webb, Korey Silverman-Roati

Synopsis: This paper examines the governance of direct ocean carbon capture and storage (DOCCS), a marine carbon dioxide removal approach that enhances ocean CO₂ uptake by extracting dissolved carbon. While potentially high in CDR capacity, DOCCS raises environmental and operational risks linked to infrastructure, water handling, and CO₂ storage. The study reviews international legal frameworks, identifying governance gaps and emphasizing the need for careful regulation to ensure safe, just, and responsible deployment.

Greenhouse gas budget and net carbon sequestration of different afforestation types of the “Grain for Green” Project

Authors: Tianren Yu, Fei Lu, Binbin Huang, Xiaobiao Zhang, Shishuai Yang, Bojie Li, Xiaoke Wang, Yafei Yuan, Lu Zhang, Zhiyun Ouyang

Synopsis: This study quantifies greenhouse gas sequestration and emissions across afforestation types in China’s “Grain for Green” project (2000–2020) using a CANM-GGP framework. Total net carbon sequestration reached 5097 TgCO₂, though emissions offset part of this benefit. Firewood and ecological forests showed the highest mitigation rates, while economic forests acted as net emitters. Overall, afforestation delivered substantial climate benefits with strong variation by forest type.

A Modular BECCS Process Chain Framework from Biomass to Carbon Removal

Authors: Viola Schaber, Ronja Wollnik, Malgorzata Borchers, Daniela Thrän

Synopsis: This paper presents a modular framework for Bioenergy with Carbon Capture and Storage (BECCS) developed within the German “CDR-Atlas” initiative. It breaks BECCS into transparent, adaptable components spanning biomass sourcing, conversion, CO₂ transport, storage, and governance. Designed to improve clarity and comparability, the framework supports planning, stakeholder engagement, and identification of deployment bottlenecks to enhance BECCS governance and scalability.

A comprehensive design framework for nature-based solutions projects focused on carbon dioxide removal: a systematic literature review of approaches, models and tools

Authors: COMBE Mathieu, BRIARD Tristan, HARAMBAT Fabien, SEGONDS Frédéric, JEAN Camille

Synopsis: This study reviews design methodologies for Nature-based Solutions (NbS) targeting CDR, addressing gaps in practical implementation guidance. Based on 118 articles, it develops a structured framework covering definition, assessment, optimization, and implementation stages, with associated models and tools for carbon accounting and ecosystem analysis. The study highlights increasing use of modelling and machine learning, and calls for more systematic, resilient NbS design approaches for effective CDR deployment.

Hemispheric contrast in summer season duration responses to CO2 removal

Authors: Bo-Joung Park, Seung-Ki Min, Soon-Il An, et al.

Synopsis: This study uses climate model simulations with CO₂ ramp-up and ramp-down scenarios to show that summer season length does not fully revert as CO₂ declines, revealing hysteresis in the climate system. Extratropical lands experience longer summers during cooling than warming, with stronger effects in the Southern Hemisphere due to delayed Southern Ocean cooling. In the Northern Hemisphere, both Southern Ocean conditions and Atlantic circulation changes contribute to asymmetric recovery and persistent heat extremes.

Decades of increased emissions from forest-fuelled BECCS

Authors: Timothy D. Searchinger, Liqing Peng, Daniela Russi & Charles Canham

Synopsis: This study evaluates BECCS using wood from existing forests and finds it is unlikely to deliver negative emissions within 150 years. It may generate higher emissions than natural gas without CCS for decades and significantly increase electricity costs. Because most emissions occur upstream and cannot be captured, and wood is carbon-intensive with lower efficiency, the results suggest caution against forest-based BECCS policies.

Scaling Carbon Removal to Gigaton Capacity using Pressurized Direct Air Capture

Authors: Ahmed Elsayed and Thaier Alawadh

Synopsis: This study proposes a high-pressure DAC system that shifts focus from lowering energy per unit CO₂ to increasing air-processing throughput. The design reduces contactor size significantly and boosts performance through improved absorption capacity and rate using a scalable solvent system. By leveraging mature industrial technologies, it aims to enable gigaton-scale CO₂ removal, highlighting turbomachinery and membranes as key areas for future cost reductions.

Potential Impact of Fires on Enhanced Rock Weathering: Learning from the Effects of Fires on Soil Properties and Nutrients

Authors: Karam Abu El Haija, Rafael M Santos

Synopsis: This perspective examines how wildfires may influence enhanced rock weathering (ERW) as a carbon dioxide removal strategy. It finds that fire effects on soil chemistry are highly variable and nonlinear, with temporary ash-driven alkalinity, altered mineral behavior, and increased erosion potentially disrupting weathering processes and carbon accounting. The study highlights fire history as a critical but currently overlooked factor in ERW deployment and monitoring frameworks.

In-depth direct air capture integration to achieve zero-carbon and water data center

Authors: Yuxuan Zhang, Sheng Chen, Mincheng Gao, Xiaojie Lin, Binjian Nie, Yongzhen Wang, Long Jiang

Synopsis: This study proposes integrating DAC with data center operations to reduce both carbon emissions and water use. By using data center waste heat to support DAC desorption, the system improves energy efficiency and enables partial environmental balancing. Case results suggest that zero-carbon operation is achievable under certain electricity emission factors, while additional CO₂ capture is needed to offset water use, supporting the concept of zero-water and zero-carbon data centers.

Microalgae-Based Direct Air Capture Systems for Carbon Dioxide Emission Reductions in Developing Megacities: A Techno-Economic and Policy Analysis

Authors: W.M.S. Dayanath, I.M.S.K. Ilankoon, Shafeeq Ahmed Syed Ali, Meng Nan Chong, Su Chern Foo

Synopsis: This article reviews microalgae-based DAC as an urban carbon mitigation strategy for developing megacities. Compared to trees and conventional DAC, microalgae systems offer higher photosynthetic efficiency and greater CO₂ uptake per biomass while fitting within constrained urban space. The study highlights their potential for carbon neutrality and economic co-benefits, but emphasizes the need for stronger economic analysis, technical validation, and supportive policy frameworks for large-scale deployment.

Investigating the effects of co-applied basalt and biochar on carbon removal efficiency and grain yield in rice paddy

Authors: Xueliu Gong, Jiarong Wu, Jingsong Qin, Jinkai Zhao, et al.

Synopsis: This study evaluates enhanced silicate weathering in rice paddies using basalt and biochar. Basalt alone delivers substantial CO₂ sequestration (~11.3 t CO₂/ha) and yield gains, while adding biochar reduces methane and nitrous oxide emissions and improves soil microbial dynamics. However, combined treatment lowers net mineral-based CDR efficiency compared to basalt alone, highlighting trade-offs between greenhouse gas mitigation, crop yield, and optimal amendment design in flooded agricultural systems.

Rhenium isotopes reveal enhanced rock organic carbon oxidation over the Toarcian Oceanic Anoxic Event

Authors: Madeleine Stow, Alexander J. Dickson, Julie Prytulak, et al.

Synopsis: This study uses rhenium isotope records from Early Jurassic marine sediments to reconstruct changes in organic carbon weathering during the Toarcian Ocean Anoxic Event. Results indicate that 6–7°C global warming intensified oxidation of rock organic carbon, releasing large amounts of CO₂ (estimated 7600–20,490 PgC). This shows that chemical weathering can act as a strong positive climate feedback during extreme warming, rather than a stabilizing one.

Low-cost copper ore oxygen carrier for Bio-CLOU systems: performance assessment and potential for negative-carbon bioenergy (BECCS)

Authors: Tiago Roberto Costa, Amirhossein Filsouf, et al.

Synopsis: This study evaluates a low-cost natural copper ore (CuB) as an oxygen carrier for Bioenergy with Carbon Capture and Storage (BECCS) using Chemical Looping with Oxygen Uncoupling (CLOU). Experiments show high oxygen transport capacity, stable redox cycling, and effective performance under biomass conditions up to 950°C. CuB’s reactivity, durability, and low cost make it a promising material for scalable negative-emission energy systems.

Recognition in climate justice: Lessons from land-based carbon dioxide removal

Authors: Elisa Paiusco

Synopsis: This article re-evaluates the ethics of CDR by extending beyond distributive justice to include recognition justice. Using Fraser’s status-based framework and Caney’s integrationist perspective, it argues that land-based CDR (e.g., BECCS) can overlook Indigenous identities, values, and knowledge systems - especially in regions vulnerable to land grabs. It concludes that recognition is essential for ethically assessing CDR deployment.

Fluid–rock interaction experiments on basaltic volcanic rocks at 90 bar and 50 °C for potential carbon storage in Patagonia, Chile

Authors: Carolina Henríquez, Klebson C. Silva, Luis Mancini, Paulo Quezada, Mauricio Calderón, Leonardo Fadel Cury, Anelize Bahniuk

Synopsis: This study presents the first laboratory-scale CO₂ mineralization experiments on basalts from the Pali Aike Volcanic Field in Patagonia for carbon capture and storage (CCS). Results show rapid basalt dissolution and carbonate formation (calcite) within 30 days under CO₂-rich conditions, confirming strong reactivity. The findings highlight the region’s potential as a strategic site for long-term, stable CO₂ sequestration via basalt mineralization.

Potential and Challenges for CDR in the European pulp and paper sector

Authors: Kristin Jordal, Rahul Anantharaman, Michaël Becidan, et al.

Synopsis: This perspective assesses the European pulp and paper sector’s potential for large-scale carbon dioxide removal (up to 50 Mtpa) via CO₂ capture and storage (CCS), particularly in kraft pulp mills. While promising, recovery boiler flue gases contain complex impurities that may hinder capture performance and system stability. The study highlights the need for further research, supportive regulation, long-term investment certainty, and large-scale CDR markets to unlock sector-wide deployment.

WEB POSTS

INTERVIEW: Uncertainty over Microsoft CDR purchases unlikely to derail nature-based carbon removal market (Carbon Pulse)

Questions about Lithos’ first ERW credit issuance (CarbonPlan)

Reality check: Scaling carbon dioxide removal requires a compliance market, not just voluntary commitments (Carbonaide)

Accounting for Impact: Insights from Ryan Waddington, CEO of Cowboy Clean Fuels (Abdolute Climate)

FEATURE: Canadian CDR stands on compliance precipice, needs support to kick voluntary ‘training wheels’ (Carbon Pulse)

Who buys next? (Negative Emissions)

Is heavy industry the future of carbon removal in the US? (Latitude Media)

EDF Launches New Research Program on Phytoplankton Carbon Solutions (Environmental Defense Fund)

QC Intel - ERW developer set to publish data amid critique of removal rate (QC Intel)

ERW developer defends quantification of CO2 removal that achieved 8.3 tonnes per hectare (Carbon Pulse)

Researchers to measure atmospheric benefits of restored San Francisco Bay wetland (UC Santa Cruz)

AI Could Trigger New Demand for Carbon-Removal Sector, Report Says (WSJ)

Ocean pH Project Produces Carbon Uptake Results (The Province Town Independent)

The Balearic Islands have the largest CO2 storage capacity in the western Mediterranean, thanks to posidonia (Forbes)

The Carbon Removal Market Was Built On One Customer. Now What? (Forbes)

Can the carbon removals market keep pace with the AI boom? (Financial Times)

How to Save the Planet Without Screwing Over Poor People (Persuasion)

Is heavy industry the future of carbon removal in the US? (Latitude Media)

Carbon removal certification needs to catch up with carbon-storing science (Paebbl)

Offset project paperwork should be internally consistent. It’s not. (Carbon Plan)

Sylvera’s Biochar Framework: Ensuring Quality and Trust in Carbon Projects (Sylvera)

INTERVIEW: Soil restoration could unlock overlooked climate cooling pathway (Carbon Pulse)

EV Battery Production Process Inspires New Direct Air Carbon Capture Technology (DongA Science)

How Microsoft spooked the global carbon removal market (Politico Pro)

Response to “Direct Measurement of Carbon Dioxide Removal Due to Enhanced Weathering” (ACS Publications)

Meeting the moment: how scientific philanthropies are expanding their reach (Nature)

New Zealand seeks to scale carbon removal solutions, ministry priorities report says (Carbon Pulse)

Microsoft CDR purchasing pause “naturally alarming” but can “ultimately prove constructive” -whitepaper (Carbon Pulse)

VCM Project: Anglo American lists ERW project on Isometric (QC Intel)

EU mulls annual calls to spur crediting under removals framework (QC Intel)

Carbon Removal Ireland Highlights Great National CDR Potential, Urging For Swift Action (Carbon Herald)

Soil Carbon Dioxide Removal Estimates from Enhanced Weathering Deployments in the Southeastern United States Are Likely Tied to Cation Mobility (ACS Publications)

Clean Air Task Force and Penn State Researchers Outline Framework for Robust Biomass Carbon Removal Standards (Biochar Today)

VCM Project: Verra registry now lists over 6,000 projects (QC Intel)

How carbon removal tech is adapting to Trump’s energy agenda (Axios)

Can the European “tortoise” and the US “hare” both finish the carbon management race in time for net-zero 2050? (Everything & The Carbon Sink)

Thinking about carbon dioxide like an accountant (One Percent Brighter)

Soil tillage and carbon sequestration – time to break with the paradigm (Carbon Readings)

“You Don’t Need to Have All the Answers Before You Start” (CDRJobs)

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REPORTS

Italy’s potential to deploy CDR at scale and speed - Background report (Carbon Gap & B3 Carbon)

Scaling CDR: Opportunities to collaborate across the UK, EU, US and beyond (CO2RE)

No Wasted Opportunities - Embedding Carbon Removal in the Management of Wastewater, Concrete and Mine (Carbon Gap and Deloitte North and South Europe)

Post-Prize Impact Report: XPRIZE Carbon Removal (XPRIZE Carbon Removal)

Durable CDR: Reality vs Expectations: How are CDR methods performing relative to expectations? (CDR.fyi)

Biochar applications for petroleum hydrocarbon Sorption & bioremediation (Myno Carbon)

UPCOMING EVENTS

April 2026

What’s Hot in Carbon Dioxide Removal – A Peek into the Future of Climate Tech by AirMiners | 28 April 2026 | Online

(NEW) Geological Carbon Storage Atlas of Eastern Canada: Part 1 by CDL | 28 April 2026 | Online

Why biochar is top of mind for buyers and why quality is worth the premium by Climeworks | 28 April 2026 | Online

2026 Annual Convening by Carbon to Sea Initiative | 28-30 April 2026 | Halifax, Nova Scotia

AfricArena Nairobi Summit 2026 by AfricArena | 29 April 2026 | Nairobi County

(NEW) Knowledge Exchange Webinar: Carbon Dioxide Removal in Urban Contexts | 30 April 2026 | Online

May 2026

Climeworks Summit 2026 | 04 May 2026 | Online | Zyrich Switzerland

Inside NextGen CDR Buyers Club: Lessons on Carbon Removal Purchasing by NextGen | 04 May 2026 | Switzerland

Reducing Risk, Time & Cost in Carbon Removal Purchasing Agreements by OSCAR | 04 May 2026 | Switzerland

(NEW) CDR Events at Climate Week Zurich | 4-9 May 2026

Upgrade Your Carbon Procurement Strategy: Building a High-Integrity Carbon Portfolio by Trellis | 05 May 2026 | Online

Getting Carbon Removal Right: A Buyer’s Guide to Quality, Strategy, and First Steps by Unbound | 05 May 2026 | Online

Inside Carbon Storage: A Guided Tour Underground by Flums Switzerland | 05 May 2026

(NEW) Getting Carbon Removal Right: A Buyer’s Guide to Quality, Strategy, and First Steps by Carbon Unbound | 05 May 2026 | Online

(NEW) Geological Carbon Storage Atlas of Eastern Canada: Part 2 by CDL | 05 May 2026 | Online

Unlocking Value in Lower-Carbon Cement by Sylvera | 06 May 2026 | Online

(NEW) Building Africa as a Global CDR Hub: Innovation & Entrepreneurship by Emerging Climate Frontiers | 06 May 2026 | Online

(NEW) Operational net zero by Milkywire | 07 May 2026 | Online

From Waste to Carbon Removal: Biochar Coffee & Tea in Nature by BCHAR | 07 May 2026 | Switzerland

Two events. One day for CDR by First Climate | 07 May 2026 | Zurich

(NEW) Evolutions in measurement tools and guidance: understanding Verra’s soil sampling handbook and its implications on SOC measurement by ChrysaLabs | 07 May 2026 | Online

YCNCC Spring Symposium + Fifth Anniversary by Yale Center for Natural Carbon Capture | 7-8 May 2026 | New Haven

Achieving net zero: CO₂ removal in focus by Swiss Carbon Removal Platform | 09 May 2026 | Zurich

Carbon Removal Investment Summit 2026 | 13 May 2026 | London

(NEW) Carbon Removal Investment Summit 2026 by CCarbon | 13 May 2026 | London, UK

(NEW) The path to net zero: Carbon dioxide removals for businesses by Removall Carbon | 13 May 2026 | Online

Scaling CDR in the Global Hub for Finance, Policy, and Innovation by Carbon Unbound east coast | 19 & 20 May, 2026 | New York

APACdr SUMMIT by Emerald Climate | 20 May 2026 | Singapore

Carbon Removal and Carbon Farming “CRCF” | 20-21 May 2026 | Brussels

10 International Symposium on Soil Organic Matter | 25-29 May 2026 | Brazil

(NEW) Remote sensing of the land biosphere to support quantification of carbon emissions and removals by the EU projects Avengers, Eye-clima & Paris | 26 May 2026 | Online

Negative Emissions Summit 2026 | 04 June 2026 | Brussels

(NEW) Carbon Drawdown Symposium 2026 by Carbon Drawdown Initiative | 16–17 June 2026 | Online & Hotel Luise, Erlangen

Carbon Removal London 2026 by Supercritical | 22 June 2026 | London

Scaling CDR Summit by Isometric | 23 June 2026 | London, England

23rd International Conference on Carbon Dioxide Utilization | 6-10 July 2026 | St.Louis, Missouri

Nordic Climate Finance Summit | 3-4 September 2026 | Oslo, Norway

CDR26–CDRANet’s 2026 conference on the future of carbon dioxide removal | 20-21 October 2026 | Vancouver

(NEW) 2026 North American Biochar Conference - Setting the Standard for Biochar by American Biochar Institute | November 16-18, 2026 | New Orleans, Louisiana

Carbon Removal Events Calendar

JOB OPPORTUNITIES

Postgraduate Research Associate – Blue Carbon OAE at The Yale Center for Natural Carbon Capture | Deadline: 11 May 2026

“The Yale Center for Natural Carbon Capture (YCNCC) is seeking up to two Postgraduate Research Associates to join the Center’s new Blue Carbon Ocean Alkalinity Enhancement (OAE) project. This ambitious project sits at the intersection of coastal ecology, geochemistry, and carbon markets.”

Science Lead - Research & Innovation at UNDO | UK

“UNDO is tackling the greatest challenge of our time: climate change. We are a fast-growing for-profit business that is already one of the biggest carbon removal companies in the world.”

Intern in Sorbent Structures Characterization (80-100%) at Climeworks | Opfikon, Zurich, Switzerland

“Climeworks is a leading high-quality carbon removal provider, combining decades of expertise in Direct Air Capture (DAC) technology with a holistic approach to carbon removal solutions.”

Head of Carbon at InPlanet | Remote

“InPlanet is a mission-driven, remote-first ClimateTech startup headquartered between Germany and Brazil with hubs in Sao Paulo, Rio de Janeiro, New York and London. We’re scaling Enhanced Rock Weathering (ERW) in tropical agriculture as a powerful method to remove carbon, regenerate soils, and transform the way food is grown in the tropics.”

Process Engineer at A Healthier Earth | Royal Wootton Bassett, England, United Kingdom

“A Healthier Earth is a climate-tech catalyst delivering profitable, planet-positive projects at speed and scale.”

Project Development Manager at Living Carbon | Remote

“Living Carbon is a public benefit company with a mission to fight climate change by transforming marginal land into high-value environmental assets. Our team specializes in restoring abandoned mineland and degraded agricultural land into diverse, thriving forests.”

Climate Hardware Engineer at TerraFixing | Ottawa, ON

“TerraFixing is a Canadian company developing Direct Air Capture (DAC) systems designed to operate efficiently in cold climates.”

Operations Intern at Brineworks | Amsterdam

“Brineworks’ Direct Air Capture solution can operate anywhere and reach ultra-low costs around the world, with a clear path to <$100/ton-CO₂.”

Executive Director at Carbon Plan | U.S. Remote

“CarbonPlan is a nonprofit research organization using science and data to accelerate climate action.”

Postdoctoral Researcher - coastal carbon cycling, marine Carbon Dioxide Removal at Institut für Kohlenstoff-Kreisläufe

“Institut für Kohlenstoff-Kreisläufe is seeking a postdoc with interest in coastal carbon cycling, marine Carbon Dioxide Removal (mCDR), and its Measurement, Reporting, and Verification (MRV). Within the Horizon Europe project MAR-CO2, this postdoc will focus on direct measurements of air–sea exchange in the context of pilot-scale mCDR interventions and explore the role of equilibration timescales in MRV

Senior Geoscientist at Mati Carbon | Bangalore

“Mati Carbon is an award-winning durable carbon removal enterprise with a mission to empower 100 million smallholder farmers by 2040.”

Mechanical Engineer at Sponge | Boston area, MA

“Sponge is an early-stage climate technology company. Sponge has a simple direct air capture (DAC) process that removes carbon dioxide from the atmosphere at a fraction of the energy and cost required by others. This cost advantage unlocks huge markets in utilization and sequestration.”

Geochemical Modeler at InPlanet | Remote

“Inplanet is an impact-driven, remote-first, ClimateTech (CDR) startup headquartered in Germany and Brazil to reverse climate change and make tropical agriculture more regenerative, low-carbon, and sustainable.”

CDRjobs Board

PODCASTS

Cement Innovation with CURA | Constructing Tomorrow

“How do we innovate and decarbonize one of construction’s most established and carbon intensive materials? This week on Constructing Tomorrow, Adam Borgatti and Prabh Banga are joined by Phil De Luna from CURA to explore how circular, low-carbon cement technologies are translating research into practical, scalable solutions.”

mCDR: Can the Ocean Store Our Carbon for Centuries? with Dr. Morgan Raven | Oceanography

“We may need to remove carbon from the atmosphere—can the ocean help? Biomass-based marine carbon dioxide removal (mCDR) explores whether natural ocean processes can help store carbon for the long term. Oceanographer and biogeochemist Dr. Morgan Raven explains how organic carbon moves through marine systems, why low-oxygen environments like deep-sea brines and fjords may enable long-term carbon sequestration, and what scientists still need to understand before these approaches can scale. This episode explores marine carbon dioxide removal, carbon sequestration, blue carbon, and ocean biogeochemistry, while addressing uncertainty, environmental risk, and the role these strategies might play alongside emissions reduction. A clear, grounded look at one of the most complex and debated frontiers in climate science.”

The challenger turning DAC’s water problem on its head | Powering Sustainable Ideas

“They extract CO2 direct from the air, but direct air capture technologies typically drink up massive quantities of water and energy while doing so. An alternative offered by New Jersey-based Avnos actually generates water. In this episode of Powering Sustainable Ideas, Avnos founder Will Kain explains how it’s done, and why he believes his innovation will be especially attractive to datacenter operators.”

Why We All Keep Going to Carbon Unbound—w/ Oli Katz, Unbound Summits | Reversing Climate Change

“Every industry needs a Schelling point. For carbon dioxide removal, it’s Carbon Unbound.

Unbound Summits’ CEO and Founder Oliver Katz joins host Ross Kenyon to chat about building the CDR industry’s flagship in-person events, the economics of conference organizing, why the adaptation event series didn’t work, the pay-to-play dynamics of industry speaking slots, and whether carbon removal professionals need to take themselves less seriously.

Listeners can get themselves 10% off of Carbon Unbound East Coast in New York City on May 19th-20th by using the discount count: “ReversingClimateChange”.”

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YOUTUBE VIDEOS

A Carbon Removal Experiment at NYU’s Urban Farm | New York University

“On April 3, 2026, Jonathan Lambert, a Gallatin visiting assistant professor, joined Melissa Metrick, the manager of NYU’s Urban Farm Lab, to create the first enhanced rock weathering site in New York City. To achieve this, they spread 10 pounds of volcanic rock called basalt over a soil bed at the Urban Farm Lab for carbon sequestration.”

Dr. Antonius Gagern on the evolution and impact of Carbon to Sea | Carbon to Sea

“As Carbon to Sea heads into our 2026 Annual Convening, Executive Director Dr. Antonius Gagern sat down with Senior Manager for Communications and Policy, Danny Gawlowski, to discuss Carbon to Sea’s founding, evolution, and its role in the rapidly-developing ocean-climate field.”

Cementing a more sustainable alternative to concrete | CBS Sunday Morning

“The process of making 30 billion tons of concrete every year produces more carbon pollution than all the world’s ships and planes put together. Now, the North Carolina and Denmark-based Biomason is using biotechnology, including naturally-occurring microbes, to create “biocement” that’s just as sturdy but emits much less CO2. David Pogue reports.

“CBS News Sunday Morning” features stories on the arts, music, nature, entertainment, sports, history, science and Americana, and highlights unique human accomplishments and achievements. Check local listings for “CBS News Sunday Morning” broadcast times.”

Beyond Microsoft | Tito - AirMiners

No Wasted Opportunities | Embedding carbon removal in waste management | 21April, 2026, Brussels | Carbon Gap

“On April 21, Carbon Gap and Deloitte are launched a report examining the transformative potential of carbon removal in three industries where removal capacity matches or exceeds existing GHG output: wastewater, concrete and demolition waste, mining waste

These sectors offer an opportunity to design regulatory frameworks that not only scale carbon dioxide removal (CDR) technologies, but build competitiveness and resilience and transition these sectors toward net-negative profiles.

We hear from project developers and policymakers in each industry with a discussion on main opportunities and barriers they face in building a business case for these decarbonisation strategies.”

This is CDR: Carbon Removal: The Next Generation - CRC 20226 Webinar #7 | OpenAir

“The seventh webinar in the OpenAir Collective’s 2026 Carbon Removal Challenge monthly webinar series began with the announcement of this year’s winning teams! Then we will had a discussion with three people who have their fingers on the pulse of carbon removal: Ben Rubin from Carbon Business Council (CO2BC), Oli Katz from Carbon Unbound, and Joanna Klitzke from Frontier.

Topics included carbon removal’s latest happenings, global trends, and predictions; the themes planned for the upcoming Carbon Unbound East Coast conference in NYC, where Challenge winners will present; as well as recently announced CO2BC initiatives. “

Public Consultation – Global Biochar C-Sink (Version 4.0) | Carbon Standards International AG

Bad Idea #49 “We can stop worrying about the climate” with Zeke Hausfather | WePlanet

“In this episode of Saving the World from Bad Ideas, Mark Lynas speaks with climate scientist Zeke Hausfather about a dangerously complacent idea: we can stop worrying about the climate. As recent years have broken temperature records and warming appears to be accelerating, they explore why that conclusion is badly mistaken.

The conversation unpacks the hidden role of aerosols in masking warming, what recent spikes in temperature do and do not mean, whether net zero really stops further warming, and how seriously we should take tipping points, geoengineering, and carbon removal. The result is a clear-eyed discussion that pushes back against both panic and complacency, and argues for staying focused on the scale and complexity of the climate challenge.”

Weekly Carbon Removal Updates from 20 April - 26 April 2026 | Carbon Removal Updates Bulletin

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DEADLINES

Ireland launched a biochar socio-economic impact framework tender | Deadline: 29 April 2026

Isometric released draft biochar mobile reactor module for public consultation | Deadline: 30 April 2026

The Office of the United Nations High Commissioner for Human Rights has launched a call for input on climate-related technologies, including geoengineering (CDR & SRM), to assess their potential impacts on human rights | ‎Deadline: 30 April 2026

EU Commission launched consultations on post-2030 climate policy | Feedback due 04 May 2026

Government of Canada launched a call for bids to enable the federal departments to buy $10M CAD CDR credits from Canadian projects | Deadline: 11 May 2026

(NEW) The Rainbow Biogenic carbon capture and storage methodology is open for public consultation | Deadline: 21 May 2026

(NEW) Gold Standard has launched its first methodology for biochar-based CDR | Consultation closes: 22 May 2026

Deloitte launched an EU survey to design a carbon farming Buyers’ Club under CRCF | Deadline: 26 May 2026

(NEW) Carbon Removall launched its 2026 RFP for carbon removal projects | Deadline: 29 May 2026

SICTOM PEZENAS-AGDE in southern France issued a €13.7M biochar facility tender | Submission deadline: 29 May 2026

(NEW) The UpLink–World Economic Forum Innovation Challenge is open for CDR startups | Applications close 4 June 2026

Call for Proposals: Sweden’s Energy Agency launched a $1B BECCS funding round for CO₂ capture from bioenergy | Deadline: 13 August 2026

Swedish Energy Agency opened 15M SEK funding for negative emissions R&D | Deadline: 31 August 2026

Carbon Management journal calls for CDR papers | Deadline: 13 November 2026

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JUMP TO SECTION

1. This Week’s Top CDR Highlights

2. Commercial News

3. Research Papers

4. Thesis

5. Web Posts

6. Reports

7. Upcoming Events

8. Job Opportunities

9. Podcasts

10. YouTube Videos

11. Deadlines

THIS WEEK’S TOP CDR HIGHLIGHTS

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COMMERCIAL NEWS

EU approved €5B for climate projects in Germany and Czechia, funding peatland restoration for CDR, biomethane, and clean energy (ESG Today)

Exomad Green and Supercritical signed a 500,000t biochar CDR deal (ESG Today)

Novocarbo secured a long-term CDR deal & renewable heat agreement with Stadtwerke Dessau (My News Desk)

Mast Reforestation sold out MT1 biomass burial credits with major buyers like Bain and BMO (Finance)

U.S. DOE reinstated up to $1.2B for carbon removal projects, including two DAC hubs targeting 2Mt CO₂/year (Reuters)

MAX Burgers purchased 1,000-year biocarbon storage credits from Sweden’s first certified project (MAX)

Mangrove Systems acquired Grain Ecosystem assets to expand its biochar MRV platform (ESG Today)

Google launched a California wetland restoration project as a CO₂ removal “living lab” (Google)

Maryland passed legislation supporting biomass-based CDR technologies (QC Intel)

Climate Vault added Cowboy Clean Fuels’ Wyoming project to its CDR portfolio (Carbon Capture Magazine)

BeZero Carbon expanded into Japan with Tokyo Metropolitan Government support (BeZero Carbon)

CHAR Technologies acquired a Québec biocarbon facility and secured long-term offtake (Biochar Today)

EPA issued a second-ever MPRSA permit for a mCDR pilot in Louisiana

Remove announced Cohort 2 of the Africa Carbon Removal Accelerator, selecting 12 startups including AirSmat, Green Voyage, ID Water, Iroko Analytics (Techstars ‘22), NanoPula, NARA Climate, Real Naturation Ltd., Sinc.Earth, Substrate Biochar, Truecoco Ghana Ltd, Zen Carbon and Zowasel (LinkedIn)

Switzerland reported industrial CDR in its national GHG inventory for the first time

RESEARCH PAPERS

Andean volcanism, ocean fertilization, marine ecosystem turnover, and global cooling in the Late Miocene

Authors: Barbara Carrapa, Mark T. Clementz, Nicolás J. Cosentino, et al.

Synopsis: This study investigates how volcanic ash from the Andes influenced ocean productivity and climate during the Late Miocene. Combining data and models, it shows that ash supplied nutrients to the Southern Ocean, boosting biological productivity and deep-ocean carbon sequestration. Findings suggest Andean volcanism played a significant, previously underrecognized role in shaping marine ecosystems, nutrient cycles, and contributing to global cooling.

A field trial demonstrating CO2 removal through enhanced weathering in mine tailings: design, commissioning and early performance of a European Union-funded pilot

Authors: Shiimi, R; Savage, W; Mouchos, E; Brussee, O; Ronne, E; Pearce, S

Synopsis: This study presents the first EU pilot testing monitoring, reporting, and verification (MRV) for ERW using mine tailings at Finland’s Kevitsa Mine. A sensor-equipped test cell tracks CO₂ capture through continuous monitoring and chemical analysis. Results demonstrate a scalable approach to quantify carbon removal, supporting sustainable deployment of ERW at active and closed mine sites.

What do we know about the albedo effect of afforestation and reforestation? A systematic synthesis of the scientific literature

Authors: Leon Stephan, Ingrid Schulte and Sabine Fuss

Synopsis: This study examines how afforestation and reforestation (A/R), key carbon dioxide removal strategies, affect Earth’s albedo and temperature outcomes. Reviewing existing literature, it finds A/R generally reduces albedo, with varied temperature effects across regions. The evidence base remains uneven and limited, highlighting the need for more detailed, site-specific research to fully assess how albedo changes influence the overall climate benefits of A/R.

Microalgae bioenergy with carbon capture, utilization and storage: A sustainable technology to net-negative emissions and circular economy

Authors: Chao-Wen Wang, Kai Ling, Hwai Chyuan Ong, Brandon Han Hoe Goh, Cheng-Tang Pan

Synopsis: This review explores microalgae-based BECCUS as a pathway to net-negative emissions by combining bioenergy production with carbon capture. It highlights advantages such as CO₂ fixation, nutrient recycling, and circular bioeconomy integration. However, most systems remain at pilot stages due to high costs and technical challenges. Life cycle and economic analyses underscore potential, while emphasizing the need for innovation to improve scalability and feasibility.

Influence of Deep-Sea Carbonate Sediments on the Durability of Carbon Storage from Ocean Alkalinity Enhancement

Authors: Sina Acksen, Dr. Wolfgang Koeve, Dr. Markus Pahlow, Dr. Christopher J. Somes, and Prof. Andreas Oschlies

Synopsis: This study evaluates the long-term durability of Ocean Alkalinity Enhancement (OAE) using 10,000-year simulations. Results show that 35–59% of added alkalinity is lost over millennia due to deep-sea sediment processes, with significant CO₂ outgassing reducing stored carbon. While OAE remains effective in the short term, its long-term storage is less stable than assumed, highlighting key uncertainties in its role as a durable carbon removal strategy.

Afforestation and Its Limits: Integrating Soil Carbon and Biochar in Land-Based CDR Portfolios

Authors: Kamasela, Dianti Farhana, Shinichiro Fujimori, Tomoko Hasegawa and Saritha Vishwanathan

Synopsis: This study assesses whether afforestation alone can meet global CDR needs aligned with IPCC targets. It finds that afforestation is insufficient on its own, delivering about 180 GtCO₂ by 2100. When combined with soil organic carbon sequestration and biochar, total removal could reach ~480 GtCO₂, suggesting that multiple land-based strategies are required to meet long-term climate goals.

CMIP7 data request: Earth system priorities and opportunities

Authors: Mara Y. McPartland, Tomas Lovato, et al.

Synopsis: This paper outlines the CMIP7 Earth System data request, designed to support next-generation climate modelling and the IPCC AR7. It emphasizes improved tracking of energy, carbon, and water cycles, alongside emissions-driven simulations and expanded ecological and biogeochemical variables. CMIP7 aims to reduce key uncertainties, improve understanding of feedbacks and tipping risks, and provide more robust climate information for research, policy, and decision-making.

The impact of land use and land cover changes on mangrove carbon sinks and methane fluxes in Qi’ao Island, China

Authors: Yixuan Wang , Yijie Wang , Ziming Zhang , Tingting Li , et al.

Synopsis: This study evaluates how different land-use changes in mangrove ecosystems affect CO₂ and CH₄ fluxes in Qi’ao Island, China. Results show strong variation across ecosystems, with exotic mangroves acting as the strongest carbon sinks but also emitting more methane, offsetting some benefits. Overall, regional restoration has shifted the area from a net carbon source to a sink, highlighting trade-offs in mangrove-based climate mitigation strategies.

Marine carbon dioxide removal (mCDR) in the Indian seas: current understanding, regional opportunities, and future directions

Authors: Sumit S. Sonar, Susmita Raulo, Suchismita Srichandan, et al.

Synopsis: This paper reviews marine carbon dioxide removal (mCDR) approaches and their potential application in the Indian Seas. It examines biological, chemical, and physical methods such as seaweed cultivation, ocean alkalinity enhancement, and artificial mixing. The study highlights region-specific opportunities like mangroves and macroalgae while emphasizing ecological, technical, and governance challenges, calling for inclusive, science-based integration of mCDR into India’s climate and blue economy strategies.

Biomass-Derived Carbon Materials for Direct Air Capture: A Review and Perspective

Authors: Sijin Dong, Jie Wang, Shuai Wang, Jinjie Liang, et al.

Synopsis: This review examines biomass-derived carbon materials as promising adsorbents for DAC of CO₂. It highlights their advantages, including low cost, renewable sourcing, and tunable structures, while evaluating key performance factors and design strategies. Despite strong potential, challenges remain in structural precision and energy-intensive regeneration. The study emphasizes future development of green synthesis and low-energy regeneration using photothermal and electrothermal properties.

Towards negative-carbon biohydrogen: A dual-function wollastonite strategy for enhanced fermentation and CO2 sequestration

Authors: Weiming Li, Can Jin, Huida Duan, Fangcao Li, Zhangxun Huang, Haodong Zhao et al.

Synopsis: This study presents a dual-function approach to improve dark fermentation for biohydrogen production while capturing CO₂ using wollastonite. At an optimal dosage, it enhances hydrogen yield and shifts microbial metabolism toward more efficient pathways, while also enabling in-situ CO₂ mineralization as CaCO₃. A two-stage process further resolves trade-offs between hydrogen production and carbon capture, achieving both high hydrogen content and reduced lifecycle emissions.

Tracer release experiments in Halifax Harbour and implications for coastal ocean alkalinity enhancement

Authors: Ms. Ruby M Yee, Dr. Ruth Musgrave, Dr. Dariia Atamanchuk,, Mr. Mathieu Dever et al.

Synopsis: This study uses dye tracer experiments in Halifax Harbour to examine dispersion dynamics relevant to ocean alkalinity enhancement (OAE). Results show strong stratification limits vertical mixing, while tidal and wind-driven flows create highly variable lateral transport and dilution patterns. Using these observations, the study models hypothetical alkalinity releases and finds that carbon uptake from OAE is most efficient in environments with strong lateral but weak vertical dilution.

Large Scale Valorization Of Steel Slag Combined With Membrane-Based Direct Air Capture For Carbon Mineralization: A Techno-economic Evaluation

Authors: Vitor Gama, Kyle Shank, Madison Morgan, Owen Gerdes, et al.

Synopsis: This study explores an integrated approach combining membrane-based direct air capture (m-DAC) with steel slag carbonation to enhance carbon dioxide removal and utilization. m-DAC concentrates atmospheric CO₂ for use in mineralization of industrial slag, producing carbonated cementitious materials. The process also enables hydrogen production from slag using waste heat, creating a dual-revenue, low-emission system that improves both CO₂ removal efficiency and techno-economic viability.

Nonenergy Biomass Carbon Removal and Storage (BiCRS): Assessing Durability of Nongaseous Carbon Products Across Terrestrial Storage Fates

Authors: Sinéad M. Crotty, Peter W. Reiners, Leah K. Clayton, et al.

Synopsis: This paper develops a framework for evaluating the durability of Biomass Carbon Removal and Storage (BiCRS) systems by distinguishing between carbon “forms” and their storage “fates.” It shows that carbon stability varies widely depending on material type (e.g., residues, biochar, bio-oil) and storage method (surface, anoxic, or geologic). The study highlights major uncertainties and outlines research needs to better assess long-term carbon storage risks and effectiveness.

Structure–Property Relationships for Moisture-Swing Direct Air Capture

Authors: John Hegarty, Michael L. Barsoum, Megan BurrillCayden Shen, et al.

Synopsis: This study investigates moisture-swing carbon capture using ion-exchange resins for efficient direct air CO₂ removal. It finds that performance depends strongly on pore structure, polymer backbone, and ion chemistry. Macroporous resins with well-connected pores perform best, while ammonium type and counterions influence capacity and kinetics. The work establishes key design rules to improve low-energy, humidity-driven direct air capture systems.

Potential of Repurposed Cooling Towers for Direct Air Capture in Germany

Authors: Robert Sager, Nils Hendrik Petersen, Manfred Wirsum

Synopsis: This study evaluates the techno-economic potential of repurposing coal power plant cooling towers in Germany for direct air capture (DAC). It finds that existing infrastructure could enable up to 2.3 MtCO₂/year of capture at an average cost of ~174 €/tCO₂, balancing lower capital costs against higher operating expenses. The work highlights repurposing as a promising pathway for scaling DAC, while emphasizing the need for further technical, social, and ecological validation.

Tree species diversity drives above-ground carbon sequestration through light-related trait shifts

Authors: Joel Jensen, Haben Blondeel, Chloe MacLaren, et al.

Synopsis: This study examines how tree species mixing affects functional traits and above-ground biomass across forest experiments in Europe and Brazil. Mixed forests show higher specific leaf area (SLA) and leaf area index (LAI), along with increased woody and litterfall biomass. These trait shifts—especially in SLA and LAI—drive greater carbon accumulation in wood, highlighting how biodiversity influences forest carbon sequestration through changes in canopy structure and light use.

Weathering without realizing inorganic CO2 removal revealed through base cation monitoring

Authors: Arthur Vienne, Patrick Frings, Jet Rijnders, Lucilla Boito, et al.

Synopsis: This mesocosm study evaluates enhanced weathering of basalt as a carbon dioxide removal strategy under crop conditions. Despite measurable rock weathering, no significant inorganic CO₂ removal was observed over 101 days due to retention of weathering products in soil rather than leaching. Most base cations were bound to soil pools or taken up by plants, suggesting limited short-term CO₂ sequestration but potential longer-term benefits for soil fertility and carbon stabilization.

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THESIS

Life cycle assessment of carbon removal via enhanced weathering of mill ash and basalt on North Queensland farmlands, Australia

Author(s): Xia, Jinyin

Synopsis: This study assesses the carbon dioxide removal potential of enhanced weathering using basalt and mill ash on farmland in North Queensland, Australia. Life cycle analysis shows basalt performs better than mill ash, delivering significantly higher net CO₂ removal and greater robustness to soil and transport variability. Transport emissions are identified as the main cost and emissions driver, with overall costs estimated at 52.5–273.8 USD per tCO₂, alongside potential soil fertility co-benefits.

WEB POSTS

Microsoft Isn’t Actually the Savior of Carbon Removal (Bloomberg)

IPCC authors begin work on Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture, Utilization, and Storage (IPCC)

Carbon Removal Industry Reels as Microsoft Retreats (The New York Times)

Is carbon removal in trouble? (MIT Technology Review)

The Long-Term Plan to Scrub Carbon From the Sky (The New York Times)

Early and Often: Meaningful Scale Requires Meaningful Engagement (Charm Industrial)

Microsoft may pause, the market problem is elsewhere (Carbon Gap)

Volcanic rock formula cuts cement emissions by two-thirds (Tech Xplore)

Carbon Removal After Microsoft (Heatmap)

ECS26: Carbon removal registry floats ‘European Central Bank’ idea for voluntary credits (Carbon Pulse)

A Pause That Forces the Carbon Removal Market to Recalibrate Itself (Carbonaide)

CO2RE Executive Director Dr Steve Smith named as IPCC author (CO2RE)

The underwater forests fighting climate change (University of Cambridge)

Carbon Removal’s Problem Isn’t a Lack of Governance (Inevitable & Obvious)

Carbon removal project supports Maine’s blue economy, broader marine health (Climate Portal)

Upcoming EU ETS overhaul divides analysts over CDR integration (QC Intel)

Climate reporting rules for food sector set high bar for regenerative agriculture (Reuters)

ETH Zurich Develops Living Material That Captures Carbon (Carbon Herald)

Certifying EU permanent carbon removals: State of play in implementing the EU’s Carbon Removal and Carbon Farming Regulation (Think Tank)

What Enhanced Weathering Opportunities Does the Acquisition of Eion Bring to Terradot? (Remineralize the Earth)

INTERVIEW: Frontier wants more corporates to buy into carbon removals (Carbon Pulse)

‘Permanent’ CDR gets clear path to credits as EU law clears scrutiny (QC Intel)

Stop Relying on the Kindness of Strangers for Carbon Dioxide Removal: The Case for a Carbon Takeback Obligation (LinkedIn)

VCM Project: Puro lists US BECCS project as future supplier (QC Intel)

INTERVIEW: Paebbl on the road to commercial-scale carbon-storing cement (S&P Global)

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REPORTS

Durable CDR Demand Structure Snapshot: Microsoft, Frontier, and the Rest of the Market (CDR.fyi)

Guidance on negative emissions for cities (EU)

Monitoring, Reporting and Verification for marine Carbon Dioxide Removal (European Marine Board)

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UPCOMING EVENTS

April 2026

CDR Buyer’s Circle - SFCW Edition by CO280 | 21 April 2026 | San Francisco, California

No Wasted Opportunities: Embedding Carbon Removal in the Management of Wastewater, Concrete and Mine Waste by Carbon Gap | 21 April 2026 | Brussels

The Second Annual Climate Restoration Summit by EarthX and the Foundation for Climate Restoration (F4CR) | 21 April 2026 | Dallas, TX

Deep Sky: Eliminating Carbon – A New Frontier for the Climate Economy: Towards a sustainable future through green technologies | 21 April 2026

Embedding Carbon Removal in the Management of Wastewater, Concrete and Mine Waste by Carbon Gap | 21 April 2026 | Brussels

(NEW) Beyond Capture: CO₂ Mineralization and Carbon Circularity for a Net-Zero Industry by Carbon Dioxide Removal Mission | 21 April 2026 | Online

NIM Industry Insights Series – Beyond Capture: CO₂ Mineralization and Carbon Circularity for a Net-Zero Industry by Carbon Dioxide Removal Mission | 21 April 2026 | Online

Bean to Biochar to Carbon Credit by Emma Hebert & 3 others | 21 April 2026 | San Francisco, California

Climate Executive Dinner 2030 on the Horizon by Climeworks | 21 April 2026 | San Francisco, US

(NEW) Smallholder Farmers: Scaling What Works by The Sidebar | 22 April 2026 | Oxford, England

(NEW) Constructing a modern climate portfolio: The complementary roles of superpollutants, nature, and permanent carbon removal by Hannah Bebbington Valori & SF Climate Week | 22 April 2026 | San Francisco

(NEW) Financing Carbon Removal From Contracts to Delivery: The Next Trillion-Dollar Market by Chloé Bigio & 3 others | 22 April 2026 | San Francisco, California

CDR Connections and Coffee by Isometric | 23 April 2026 | California

CanCO2Re Webinar - CDR and Carbon Politics: The View from the Humanities | 23 April 2026 | Online

Proposed Colorado Underground Injection Control Program Class VI Primacy Public Hearing by USEPA | 24 April 2026 | Online

2026 Shanghai Climate Week CDR Summit | 24 April 2026 | Shanghai

(NEW) The Potential Role of Marine Carbon Dioxide Removal in Combatting Climate Change by HARTE Research Institute | 24 April 2026 | Online

International carbon credits & the EU 2040 target: A blueprint for environmental integrity by BeZero Carbon | 27 April 2026 | Online

(NEW) International carbon credits & the EU 2040 target: A blueprint for environmental integrity by BeZero Carbon | 27 April 2026 | Online

What’s Hot in Carbon Dioxide Removal – A Peek into the Future of Climate Tech by AirMiners | 28 April 2026 | Online

(NEW) Why biochar is top of mind for buyers and why quality is worth the premium by Climeworks | 28 April 2026 | Online

2026 Annual Convening by Carbon to Sea Initiative | 28-30 April 2026 | Halifax, Nova Scotia

AfricArena Nairobi Summit 2026 by AfricArena | 29 April 2026 | Nairobi County

May 2026

Climeworks Summit 2026 | 04 May 2026 | Online | Zyrich Switzerland

Inside NextGen CDR Buyers Club: Lessons on Carbon Removal Purchasing by NextGen | 04 May 2026 | Switzerland

Reducing Risk, Time & Cost in Carbon Removal Purchasing Agreements by OSCAR | 04 May 2026 | Switzerland

(NEW) Upgrade Your Carbon Procurement Strategy: Building a High-Integrity Carbon Portfolio by Trellis | 05 May 2026 | Online

(NEW) Getting Carbon Removal Right: A Buyer’s Guide to Quality, Strategy, and First Steps by Unbound | 05 May 2026 | Online

Inside Carbon Storage: A Guided Tour Underground by Flums Switzerland | 05 May 2026

(NEW) Unlocking Value in Lower-Carbon Cement by Sylvera | 06 May 2026 | Online

From Waste to Carbon Removal: Biochar Coffee & Tea in Nature by BCHAR | 07 May 2026 | Switzerland

Two events. One day for CDR by First Climate | 07 May 2026 | Zurich

YCNCC Spring Symposium + Fifth Anniversary by Yale Center for Natural Carbon Capture | 7-8 May 2026 | New Haven

Achieving net zero: CO₂ removal in focus by Swiss Carbon Removal Platform | 09 May 2026 | Zurich

Carbon Removal Investment Summit 2026 | 13 May 2026 | London

Scaling CDR in the Global Hub for Finance, Policy, and Innovation by Carbon Unbound east coast | 19 & 20 May, 2026 | New York

APACdr SUMMIT by Emerald Climate | 20 May 2026 | Singapore

(NEW) Carbon Removal and Carbon Farming “CRCF” | 20-21 May 2026 | Brussels

10 International Symposium on Soil Organic Matter | 25-29 May 2026 | Brazil

Negative Emissions Summit 2026 | 04 June 2026 | Brussels

Carbon Removal London 2026 by Supercritical | 22 June 2026 | London

Scaling CDR Summit by Isometric | 23 June 2026 | London, England

23rd International Conference on Carbon Dioxide Utilization | 6-10 July 2026 | St.Louis, Missouri

Nordic Climate Finance Summit | 3-4 September 2026 | Oslo, Norway

CDR26–CDRANet’s 2026 conference on the future of carbon dioxide removal | 20-21 October 2026 | Vancouver

Carbon Removal Events Calendar

JOB OPPORTUNITIES

Research Associate at Mati Carbon | India

“Mati Carbon is a durable carbon removal enterprise with a mission to empower 100 million smallholder farmers by 2040.”

Validator / Verifier / Certifier & Reviewer – Carbon Removal (CDR) Project at CERES

“CERES-CERT AG is an ISO 17065 accredited certification body based in Switzerland.”

Senior Business Development Manager (hybrid) at GoodCarbon | Remote, Berlin

“Goodcarbon aims to empower leading companies to achieve their net-zero goals with confidence through high-integrity Nature-Based Solutions (NbS).”

Intern / Working Student – DAC / CO₂ Capture at Greenlyte | Essen

“Greenlyte is reshaping the global fuel economy with our novel, IP-protected, direct air capture to fuels technology, which shows superior economic potential compared to existing approaches, even reaching fossil prices.”

Chief Technology Officer at Timber Carbon Solutions

“Timber Carbon Solutions is a young climate tech venture at the forefront of the intersection between real estate, modern timber construction, and carbon removal, driving decarbonization in the construction sector.”

Senior Global Operations Manager at Terraformation | Remote, United States

“Terraformation accelerates the restoration of native forests to reverse climate change.”

Lead Commercial Counsel at Patch | San Francisco

“Patch is the platform scaling unified climate action.”

Senior Technical Product Manager - Carbon and Environmental Models at Klim | Berlin, Germany

“Klim work with farmers and food companies to make regenerative agriculture scalable and financially rewarding for farmers.”

Mobile Plant Operative, Aggregate Manufacture at O.C.O Technology | Wretham

“OCO Technology specialises in carbon capture, sustainable construction products and waste treatment.”

Forestry Technician at Chestnut Carbon | Eureka, CA

“Chestnut Carbon help U.S. forest landowners unlock the financial and conservation benefits of voluntary carbon markets.”

CDRjobs Board

PODCASTS

Avantium: Engineering Sorbents for DAC - Wessels | Reviewer 2 does geoengineering

“@geoengineering1 interviews Rudolf Wessels, Director of Technology and Innovation at Avantium R&D Solutions in the Netherlands (founded in 2000 as a Shell spin-out). The discussion examines Avantium’s contribution to advancing Direct Air Capture (DAC) through high-throughput experimentation platforms designed to accelerate the discovery and optimization of sorbent materials, enabling rapid, parallel testing under controlled conditions.

Wessels also discusses the company’s recent collaboration with the U.S. National Institute of Standards and Technology (NIST) Carbon Dioxide Removal Consortium, focused on improving measurement protocols, benchmarking practices, and validation in DAC systems. The episode highlights how standardized testing, process optimization, and material innovation can support the scale-up and credibility of carbon removal technologies.”

Bright Spots in US Federal Policy? Carbon removal as essential American infrastructure—w/ Eli Cain, Carbon Removal Alliance | Reversing Climate Change

“US federal carbon dioxide removal policy is a fragment of its former self. But are rumors of its death greatly exaggerated? (Sorry, Mark Twain.)

Eli Cain, Deputy Director of Policy at the Carbon Removal Alliance, comes on the show to give a reality check on US federal policy for carbon removal. Where is the action still happening, and what do we have to look forward to?

Despite a political environment that looks grim from the outside, Eli makes the case that real progress is happening:

-$125 million in FY26 appropriations

-Bipartisan congressional support that tripled year over year

-FY26 appropriations: $80 million for DOE R&D and $45 million for the CDR purchase pilot prize

-CRA’s fly-in day: from 5 Republican congressional meetings last year to 17 this year a messaging strategy built around industrial integration that is opening doors across the aisle.

When enhanced rock weathering can save farmers money, or carbon mineralization can reduce mining waste liabilities, there is a path forward. We also dig into why 45Q survived the reconciliation process, and what it takes to build durable policy in a volatile political moment.”

Segment: Peter Reinhardt & His College Roommate And Cofounder | Leap Forward

“Peter Reinhardt co-founded the analytics firm Segment, and built it into a company that sold for $3.2 billion. But before it worked, everything else they tried didn’t.

In this episode, Peter and his co-founder, Calvin French-Owen, share their humbling story of finding product-market fit: hospital panic attacks, a crisis of faith, and how, with just a few weeks of runway left, they published a Hail Mary concept on Hacker News -- that blew up. It’s a story about how giving up control finally led them to build something people wanted. And forced them to mourn their attachment to vision.”

CDR Buyers Deep Dive - Part 2: Ready, Set, Buy! | The Carbon Removal Show

“In part two of our buyers deep dive, Tom and Emily move from motivation to mechanics. Because deciding to buy carbon removal is only the beginning. The real challenge is everything that comes next.

In this episode:

Buying CDR Is Not Exactly A Trip To The Shops: Tom and Emily step inside the deal room to ask what buying carbon removal actually involves, and why the process still looks different from buyer to buyer.

Direct, Marketplace, Or Somewhere In Between?: We explore the major routes into the market, and how each path shifts who carries the burden of due diligence, education, risk, and relationship management.

A Tiny Language Check-In: Offtakes. Pre-purchases. Payment on delivery. Emily makes sure we are all still speaking the same language.

Buy Now, Pay Earlier: We look at catalytic buying, and why paying early can matter as much as buying at all. For early-stage suppliers, pre-purchases can unlock cash flow, credibility, and further finance. But for buyers, they also mean taking on very real delivery and technology risk.

Money, Money, Money: Eventually, every lofty climate intention runs into the same question: which budget line is paying for this? We explore the internal mechanics of getting CDR through procurement, finance, legal, and contract systems that were not really designed with carbon removal in mind.

Internal Carbon Pricing, Revenue Shares, And Other Ways To Fund The Madness: Klarna explains its internal carbon fee model. Wise explains why it ties climate finance to revenue. The wider point: there is still no single standard approach, but serious buyers are finding ways to make climate spending durable.

Why It Still Feels So Higgledy-Piggledy: Buyers, suppliers, and intermediaries are all building the path as they walk it, and that friction has consequences for who enters the market, and who gets left waiting for capital.”

Why Microsoft’s Carbon Removal Pullback Is Such a Big Deal | Shift Key with Robinson Meyer

“For the past few years, Microsoft has basically carried the carbon removal industry on its shoulders. The software company has purchased 72 million tons of carbon removal, more than 40 times what any other organization has financed, according to third-party sources.

Now it’s pulling back. As we reported last week, Microsoft has told suppliers and partners that it’s pausing new purchases. Though the company says that its program “has not ended,” even a temporary pullback will have significant implications for the nascent carbon removal industry. What happens next for these companies? And is a bloodbath on the way? On this week’s episode of Shift Key, Rob speaks to Jack Andreasen Cavanaugh from Columbia University’s Center on Global Energy Policy about Microsoft’s singular importance and what could come next.”

Dr. Sambuddha Misra: Drinking Tea to Save Coral Reefs? The Mechanics of Enhanced Rock Weathering in Darjeeling | REEF Roundup: Coral Reefs and Marine Conservation

“In this episode, we sit down with Dr. Sambuddha Misra, a chemical oceanographer, associate professor of earth sciences at the Indian Institute of Science, and the chief scientist at Alt Carbon. Dr. Misra has spent two decades studying how chemical weathering shapes the planet’s climate over millions of years, and is now actively applying that science to draw down atmospheric carbon at scale.”

A Government AMC for CDR - with Noah Deich | The CDR Policy Scoop

“Noah Deich is back. When he last joined the show in February 2025, the US DOE had just gutted its CDR programmes. This time, he returns to debrief on a very different project: his attempt to build a government-led advanced market commitment for carbon removal, modelled on the GAVI Vaccine Alliance in global health.

He spoke to around two dozen governments. The outcome wasn’t what he hoped for, but his diagnosis of why is sharper than you might expect, and it points to a fundamental gap that no country has yet closed.

Noah draws on the history of renewables to explain what CDR policy is still missing, identifies the two interventions he’d prioritise above everything else, and makes the case for why the current political moment, however bleak it looks, may be exactly the right time to be thinking big.”

Seven buyers in a trench coat | The Carbon Curve

“Last week, Heatmap reported that Microsoft — the single largest buyer of durable carbon dioxide removal in the world, accounting for 80–90% of all purchases ever made — is pausing new CDR purchases. Jack Andreasen Cavanaugh, Director of the Carbon Management Program at Columbia’s Center on Global Energy Policy, published a piece over the weekend arguing this isn’t really a Microsoft story. The real story is that Microsoft was ever alone in the first place.

In this conversation, Jack makes the case that voluntary corporate buying was never going to get us to gigatonnes, and that policy has to do the heavy lifting — just like it did for solar and wind. We get into what the next 12 months actually look like for CDR companies, why enhanced oil recovery deserves a fresh look, the limits of 45Q, and the one policy Jack would write into law tomorrow if he could.”

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YOUTUBE VIDEOS

Carbon Sequestration in Oceans: I Chat on the Vital Importance of Ekman Pumping, Sucking and Spirals | Paul Beckwith

“Ekman Pumping, Suction and Spirals: Vitally Important for Inorganic and Organic Carbon Sequestration

In order to understand how gases like CO2 are sequestered (stored) in the ocean, it is very important to understand Ekman pumping (pumping of water from the surface to ocean depths hundreds of meters down), Ekman sucking (upwelling of cold nutrient laden water from hundreds of meters down to the surface), the Ekman spiral, and other such phenomena.

In this tutorial style video, I attempt to explain these vital concepts, since they are essential processes for sequestering carbon in the worlds oceans.”

Potential impacts of climate interventions on marine ecosystems | European Marine Board

“This edition focused on the “Potential impacts of climate interventions on marine ecosystems” linked to EMB Future Science Briefs No. 13 ‘Monitoring, reporting and verification for marine carbon dioxide removal’ with a presentation by Kelsey Roberts.”

Harvard Voices on Climate Change: Measuring Forest-Based Carbon Emission Reductions | The Salata Institute at Harvard University

“The Salata Institute for Climate and Sustainability and the Harvard Alumni Association presents the next installment of Harvard Voices on Climate Change, a virtual series showcasing Harvard faculty and fellows on different dimensions of the climate challenge.

This session explores the science and measurement behind forest-based carbon emission reductions. Featuring Missy Holbrook, Charles Bullard Professor of Forestry, and Benton Taylor, Associate Professor of Organismic and Evolutionary Biology, the discussion examines how researchers measure carbon stored in forests and assess the role of forest conservation and restoration in climate mitigation.”

NACW 2026 - Path 3: Durability of Nature based Solutions | climatereserve

“Nature-based solutions (NbS) remain a core component of carbon markets. As with any type of project involving the removal and/or storage of carbon, permanence is fundamental to NbS integrity. Innovations and advancements in policy, process and technology have changed the discussion around NbS and how the durability of credits associated with projects can be strengthened and measured. This session will discuss the current challenges, opportunities and innovations around NbS permanence, as well as what the market is looking for in terms of durability.”

Weekly Carbon Removal Updates from 13 April - 19 April 2026 | Carbon Removal Updates Bulletin

DEADLINES

ETH Zurich launched a survey to map carbon removal ecosystem in Sub-Saharan Africa | Deadline to respond: 24 April 2026

(NEW) Carbon to Sea opened applications for an ocean alkalinity enhancement modeling workshop | Applications close 24 April 2026

Ireland launched a biochar socio-economic impact framework tender | Deadline: 29 April 2026

Isometric released draft biochar mobile reactor module for public consultation | Deadline: 30 April 2026

The Office of the United Nations High Commissioner for Human Rights has launched a call for input on climate-related technologies, including geoengineering (CDR & SRM), to assess their potential impacts on human rights | ‎Deadline: 30 April 2026

EU Commission launched consultations on post-2030 climate policy | Feedback due 04 May 2026

Government of Canada launched a call for bids to enable the federal departments to buy $10M CAD CDR credits from Canadian projects | Deadline: 11 May 2026

(NEW) Deloitte launched an EU survey to design a carbon farming Buyers’ Club under CRCF | Deadline: 26 May 2026

(NEW) Carbon Removall launched its 2026 RFP for carbon removal projects | Deadline: 29 May 2026

SICTOM PEZENAS-AGDE in southern France issued a €13.7M biochar facility tender | Submission deadline: 29 May 2026

Call for Proposals: Sweden’s Energy Agency launched a $1B BECCS funding round for CO₂ capture from bioenergy | Deadline: 13 August 2026

Swedish Energy Agency opened 15M SEK funding for negative emissions R&D | Deadline: 31 August 2026

Carbon Management journal calls for CDR papers | Deadline: 13 November 2026

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1. This Week’s Top CDR Highlights

2. Commercial News

3. Research Papers

4. Web Posts

5. Reports

6. Upcoming Events

7. Job Opportunities

8. Podcasts

9. YouTube Videos

10. Deadlines

THIS WEEK’S TOP CDR HIGHLIGHTS

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COMMERCIAL NEWS

Rock Flour Company secured €1.6M for Denmark’s first certified ERW field pilots (LinkedIn)

JPMorgan signed 10-year biomass-based carbon removal deal with Graphyte (ESG Today)

Chestnut Carbon issued 95,909 U.S. improved forest management credits using Verra removals tag (ESG News)

Grassroots Carbon signed a multi-year deal with Boeing for at least 40,000 t of soil-based CDR credits (ESG Today)

ZEN Carbon partnered with a concrete plant, marking first live industrial deployment of its tech (LinkedIn)

Varhad Capital and Velocys partnered to scale biomass-to-SAF and biochar production in India (PR Newswire)

Cowboy Clean Fuels partnered with Absolute Climate to certify CDR under the ACS registry (Globe Newswire)

Concept Lab signed an MOU with CURA to explore the use of low-carbon cement (LinkedIn)

Exomad Green and Beston Group partnered to expand biochar capacity in Bolivia to remove 1Mt CO₂/yr by 2027 (Biochar Today)

VodafoneZiggo invested in carbon removal via Klimate partnership (Voda Fone Ziggo)

CURA and Progressive Planet Alberta agreed on cement testing collaboration for low-carbon cement (LinkedIn)

Earthly and Nattergal partnered to bring biodiversity credits alongside high-integrity CDR (LinkedIn)

Svante and Meadow Lake Tribal Council (MLTC) secured a Microsoft offtake for 626,000 t CDR from a BECCS project in Saskatchewan (Svante)

Verra released updated Article 6 and CORSIA guidance plus a new buyer resource for carbon credit compliance (Verra)

US EPA issued a Class VI permit for Indiana CCS project led by Vault 44.01 and Cardinal Ethanol (Carbon Herald)

RESEARCH PAPERS

Algae and cyanobacteria as agents for carbon dioxide removal: production of long-term carbon compounds

Authors: Eduardo Gorron Gomez, Kim J. Lee Chang, Matthew C. Taylor, Dion M.F. Frampton

Synopsis: This review explores Carbon Dioxide Removal using algae and cyanobacteria, which can convert CO₂ into durable carbon compounds. A key focus is algaenan, a highly resistant biopolymer with strong potential for long-term carbon storage. Despite challenges in characterization, algal-based CDR offers a promising, underexplored pathway that could complement existing approaches while delivering added environmental and industrial benefits.

Enhanced rock weathering in acid mine drainage systems: Field evidence and passive treatment implications

Authors: Htut San Hkaung, Naito Yamashita, Nono Kimotsuki, et al.

Synopsis: This study explores acid mine drainage (AMD) systems as alternative sites for ERW using basaltic mining waste rock. Field trials in two AMD-impacted rivers in Japan show rapid mineral dissolution due to acidic, high-flow conditions, with substantial rock mass loss after one year. Weathering releases Ca²⁺ and Mg²⁺, raises pH, and promotes schwertmannite precipitation without surface passivation, enabling continued dissolution and co-removal of contaminants like arsenic. The results demonstrate that AMD environments can enhance ERW-driven CO₂ removal while simultaneously treating mine water pollution, offering a dual pathway for carbon sequestration and environmental remediation through waste rock reuse.

Introducing Microalgae Carbon Fixation and Sinking (MCFS): a new approach for controlled and scalable CDR - Preprint

Authors: Natalia Belkin, Josh Steinberg, Amit Grossman, Michal Grossowicz, Sapir Markus-Alford

Synopsis: This study introduces Microalgae Carbon Fixation and Sinking (MCFS), a marine approach to Carbon Dioxide Removal. It uses nutrient-rich substrates to boost phytoplankton growth, followed by rapid sinking to store carbon in the deep ocean for long periods. Designed with monitoring and safeguards, MCFS offers a scalable, controlled method for durable carbon sequestration while aiming to minimize ecological risks.

Prospective site-specific life cycle assessment of ocean alkalinity enhancement

Authors: Maria Myridinas, katja Fennel, Arnaud Laurent, et al.

Synopsis: This study assesses OAE via five pathways using a coupled ocean model and life cycle assessment. Under current energy systems, OAE shows little to no net climate benefit due to high fossil energy emissions, but by 2050 all pathways become net CO₂ removers (81–95% efficiency) with decarbonization. Environmental impacts vary widely, with bischofite-based Mg(OH)₂ performing best and NaOH/AS routes worst, highlighting strong dependence on energy and supply chains.

Geospatial techno-economic and life cycle assessment of renewable-powered direct air capture in Middle East and North Africa

Authors: Loiy Al-Ghussain, Mohamed G. Gado, Mohammad Alrbai, Sameer Al-Dahidi, Zifeng Lu

Synopsis: This study conducts a geospatial techno-economic and life cycle assessment of solar- and wind-powered DAC systems across the Middle East and North Africa. It evaluates how regional renewable energy conditions and system sizing affect costs and emissions. Results show levelized CO₂ capture costs ranging from 200–650 USD/tCO₂ and emissions intensity of 30–115 kgCO₂e/tCO₂, with DAC capital costs and PV efficiency as key drivers. Future projections suggest costs could fall to 135–177 USD/tCO₂ and emissions to 30–47 kgCO₂e/tCO₂ by 2030, highlighting strong regional potential for renewable-powered DAC deployment.

Species richness increases vegetation carbon sequestration but decreases soil carbon storage in temperate grasslands of China

Authors: Yingjia Su, Junyu Pu, Jing Huang et al.

Synopsis: This study examines how plant diversity influences carbon storage in grassland ecosystems using four dominant forage species in northern China. Higher species richness increases vegetation carbon in leaves, litter, and roots through complementarity effects, though different species contribute unevenly to above- and belowground carbon pools. However, soil organic carbon, particularly particulate carbon, decreases under higher diversity, suggesting short-term trade-offs driven by faster decomposition. Overall, biodiversity enhances vegetation carbon capture but may temporarily reduce soil carbon storage, highlighting complex implications for ecosystem-based climate mitigation.

Direct Air Capture in Europe - Where to Integrate, Where to Store, and What Drives Cost? - Preprint

Authors: Maximilian Bernecker, Felix Müsgens

Synopsis: This study evaluates how system design choices affect costs of Direct Air Carbon Capture and Storage within a fully decarbonised European energy system. Using a capacity expansion model, it finds that limiting CO₂ storage to North Sea sites increases costs by ~10%, while ignoring integration with the electricity system raises costs by up to 30%. Results highlight that infrastructure location and energy system coupling are key drivers of DACCS affordability.

Enhanced weathering leads to substantial C accrual on crop macrocosms

Authors: Francois Rineau, Alexander H. Frank, et al.

Synopsis: This study evaluates Enhanced Weathering in a controlled crop ecosystem using basalt application under future climate conditions. Results show that mineral dissolution increased soil alkalinity and boosted carbon flux into soils nearly threefold, exceeding expected sequestration from weathering alone. Findings suggest that enhanced weathering may also stimulate biogeochemical processes that further enhance carbon storage, indicating strong potential for scalable land-based carbon removal.

Enhanced Rock Weathering Increases Soil Carbon but Reduces Soil Organic Carbon Stability in Subtropical Croplands

Authors: Lei Ma, Manyi Li, Hualian Zhang, Zheng Mao, Shuqing Zhang, Chen Wang, Cheng Li, Shiwei Liu, and Pujia Yu

Synopsis: Enhanced rock weathering (basalt application) increased both soil organic carbon (SOC) and soil inorganic carbon (SIC) in a one-year subtropical cropland experiment, raising total carbon stocks while significantly boosting SOC and SIC across application rates. However, it also reduced SOC stability, mainly affecting labile fractions and increasing very labile carbon, with minimal impact on stable carbon pools, suggesting enhanced sequestration but potential stability trade-offs.

Role of Epoxide Functionalization of Amines for Development of Direct Air Capture Sorbents with High Cyclic Working Capacity at Low Desorption Temperatures

Authors: Joo Yeon Han, Hayoung Jeong, Younghyu Ko, et al.

Synopsis: This study examines butylene oxide (BO) functionalization of amine sorbents for DAC at low desorption temperatures. Modified polyethyleneimine and TREN-based materials achieve high cyclic CO₂ working capacities, with optimal sorbents operating at 40–45°C. They show strong stability under humid and oxygen-rich conditions. Results and simulations show that primary amine sites control CO₂ uptake, and BO modification reduces capacity by limiting their accessibility.

Observationally constrained global warming hysteresis under CO2 removal

Authors: Se-Yong Song, Duo Chan & Sang-Wook Yeh

Synopsis: This study develops a data-driven, three-layer energy balance emulator to assess temperature responses during CDR. Calibrated to observational temperature records, it finds that for the same CO₂ concentration, global temperatures during the CDR phase are about 0.7°C higher on average than during the CO₂ rising phase, indicating path-dependent warming. The model reduces inter-model uncertainty by over 70% and suggests that even stringent mitigation pathways may temporarily overshoot 1.5°C during net-zero transitions.

Study on direct air capture using Ti-doped K2CO3/ZrO2 composite adsorbent: A combination of experimental, characterization and first-principles calculations

Authors: Zhuang Qi, Xiaoping Chen, Zelin Xu, Zi Liu, Jiliang Ma, Fengyuan Zhang, Cai Liang

Synopsis: This study develops a TiO₂-doped K₂CO₃/ZrO₂ composite adsorbent to improve direct air capture (DAC) performance. The addition of Ti induces oxygen vacancies and lowers the energy barrier for KHCO₃ formation, enhancing CO₂ adsorption–desorption kinetics. The optimized material achieves a CO₂ capacity of 2.11 mmol/g and can be fully regenerated at ~150°C, with a 92.59% carbonization conversion rate and a 74.38% performance improvement over the undoped sample. It also maintains a stable working capacity of 1.15–1.32 mmol/g across 27 cycles, demonstrating strong durability and efficiency for DAC applications.

Repurposing enhanced rock weathering for brownfield cleanup: a practical carbonate–silicate remineralization method for stabilizing cationic metals in shallow soils

Authors: Quinn Zacharias

Synopsis: This paper reframes ERW as a soil remediation strategy for immobilizing cationic metals in contaminated brownfield, mining-impacted, and urban soils. It proposes using controlled carbonate–silicate blends to accelerate natural soil aging processes such as acid neutralization, increased negative surface charge, base cation exchange, and secondary mineral formation, which shift metals like Pb, Zn, Cu, Cd, and Ni into less mobile forms. Grounded in field and literature evidence, including basalt deployment in Vermont, the framework outlines practical steps for site screening, feedstock selection, application design, and verification. Results suggest silicate remineralization can reduce metal mobility while improving soil buffering and health, with additional co-benefits including local material reuse and potential carbon sequestration.

Evaluation of rock resources for carbon dioxide removal by enhanced weathering: A South China case

Authors: Shan Qi, Xing Jian

Synopsis: This study builds a geochemical database of 7,037 mafic and ultramafic rock samples across South China to assess ERW potential using a multi-criteria framework. The evaluation integrates weathering potential, nutrient content, heavy metal risks, and climate suitability, with weighting determined by the CRITIC method. Results identify Fujian Province as the most suitable region for ERW deployment, with Guangdong, Jiangxi, Hainan, and parts of Guangxi also highly favorable, including both terrestrial and coastal sites. High-potential rocks include metamorphosed harzburgite, gabbro, and pyroxenite, though heavy metals require monitoring. The study provides a standardized regional assessment framework to guide ERW deployment and support future validation through field trials.

Towards “set-in-stone” co-deployment of enhanced rock weathering and biochar – an experimental study on their CO2 removal and agronomic co-benefits

Authors: EEM (Emily) te Pas

Synopsis: This study examines ERW and biochar co-deployment as CDR strategies with agronomic co-benefits and risk mitigation. Experiments using soil columns, greenhouse pots, and a two-year field lysimeter show that wollastonite has high weathering and CDR potential, while olivine is limited by nickel release. Biochar helps reduce trace metal risks by binding weathering products. ERW increases soil pH as a key agronomic benefit, but actual carbon sequestration is constrained by soil retardation processes, limiting overall CDR efficiency despite strong theoretical potential.

Synergistic CO2-H2O sorption kinetics of ionic exchange resin for moisture swing direct air capture

Authors: Sheng Chen, Renyu Xie, Yuxuan Zhang, Ying Ji, Tao Wang, Long Jiang

Synopsis: This study examines moisture swing adsorption (MSA) kinetics for direct air capture using D290 ion-exchange resin, focusing on coupled CO₂–H₂O sorption behavior. Experiments show water strongly influences CO₂ uptake, causing phased kinetic changes driven by equilibrium constraints. Temperature, humidity, concentration, and flow rate control mass transfer. Among twelve models tested, MMO-n, LDF-n, Toth, and MMO best describe adsorption–desorption, improving MSA scale-up understanding.

Energy Emissions Accounting Methods Can Determine Whether Direct Air Capture with Storage Achieves Net Removal

Authors: Rebecca J. Hanes, Keju An, Wilson McNeil, et al.

Synopsis: This study evaluates how emissions accounting choices affect the net carbon removal of DACS in the US voluntary carbon market. Using hourly, weather-dependent simulations of sorbent- and solvent-based systems across four states, it finds that the method used to estimate grid electricity emissions dominates results, causing net CO₂ removal estimates to vary from −1049% to +108%. In contrast, other factors introduce only minor variation (±14%). The study concludes that no single electricity accounting method is universally reliable, highlighting the urgent need for high-resolution, standardized emissions data to accurately assess DACS performance and support credible carbon markets.

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WEB POSTS

The Private Sector Built the Market, Time for Us to Scale it (Carbon Middle Management Incorporated)

Scoop: Microsoft Is Pausing Carbon Removal Purchases (Heatmap)

Ocean-based Carbon Removal Experts Engage Bipartisan Congressional Leaders and Staff in Third Annual Hill Day (Carbon to Sea)

Mobilizing carbon dioxide removals (CDR): getting the policies right (Taylor & Francis)

Microsoft Didn’t “Pause” carbon dioxide removal (CDR), It Exposed the Illusion (LinkedIn)

CarbonCure Named Overall Climate Technology Company of the Year (Carbon Cure)

VCM Project: Rainbow lists mobile biochar kiln, DAC unit advances (QC Intel)

Energy giant Drax pulls out of UK climate plan (Politico)

Environmental group asks EPA to block climate test (E&E News by Politico)

Paebbl Brings In Ex-Tesla And Novo Energy Exec To Scale Commercial Expansion (Carbon Herald)

Mayor pitches Innisfail at carbon removal conference (The Albertan)

Carbon removal lessons from Denmark: A reality check for the UK (Business Green)

CDR Monthly Recap March 2026 (Allied Offsets)

ANALYSIS: Weakening of EU ETS price signal would damage carbon removal investment trajectory (Carbon Pulse)

Italian infrastructure group backs carbon removal unit with €1 mln (Carbon Pulse)

INTERVIEW: CDR trader Altitude eyes more biochar credit purchases (QC Intel)

CDR project developers near commercial stage face funding crunch, survey finds (Carbon Pulse)

‎Standing ovation, Microsoft CDR purchasing team (Everything & the Carbon Sink)‎

‎Biochar quality is a spectrum. Where you draw the line is about to move (Critically Speaking)

‎Towards a more nuanced story on direct air capture and enhanced oil recovery (Everything and Carbon Sink)

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REPORTS

Carbon Dioxide Removal (CDR) Technology Public Forums and Application to Governance Frameworks (CSPO)

The ramp-up of negative emission technologies in the transformation of the German energy system (Fraunhofer-Institut für Solare Energiesysteme)

CDR Market Review: Q1 2026 (ClimeFi)

Assessment of Current Practices in Enhanced Rock Weathering And Developing Good Practices and a Policy Framework for India (CRIA, MANT and Energiva)

Operational Net Zero (Milkywire)

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UPCOMING EVENTS

April 2026

(NEW) CDR Career Pathways & Jobs in Africa by Emerging Climate Frontiers | 14 April 2026 | Online

Isometric Standard 2.0: What it means for your project by Isometric | 14 April 2026 | Online

CORE Carbon Removal Framework by Carbon180 | 14 April 2026 | Online

Symbiosis RFP Developer Webinar | Mangroves | 14 April 2026 | Online

Carbon Removal: The Next Generation by OpenAir Collective | 14 April 2026 | Online

Carbon Removal: The Solution Climate Neutrality Can’t Ignore by RIRC | 14 April 2026 | Padua, Veneto

(NEW) Alt Carbon Open House! | 15 April 2026 | Bengaluru, Karnataka

Symbiosis RFP Developer Webinar | Reforestation and Agroforestry | 16 April 2026 | Online

(NEW) Scaling Carbon Markets through New Technologies by Swiss Sustainable Finance | 16 April 2026 | Zurich

Launch of Italy’s Carbon Removal Readiness Assessment Report by Carbon Gap | 20 April 2026 | Rome

Carbon Removal Happy Hour at SF Climate Week 2026 by Theresa Rößler & others | 20 April 2026 | California

(NEW) Emerging mCDR governance issues at the London Convention & Protocol by Sabin Center for Climate Change Law | 20 April 2026 | Online

CDR Buyer’s Circle - SFCW Edition by CO280 | 21 April 2026 | San Francisco, California

No Wasted Opportunities: Embedding Carbon Removal in the Management of Wastewater, Concrete and Mine Waste by Carbon Gap | 21 April 2026 | Brussels

The Second Annual Climate Restoration Summit by EarthX and the Foundation for Climate Restoration (F4CR) | 21 April 2026 | Dallas, TX

Deep Sky: Eliminating Carbon – A New Frontier for the Climate Economy: Towards a sustainable future through green technologies | 21 April 2026

Embedding Carbon Removal in the Management of Wastewater, Concrete and Mine Waste by Carbon Gap | 21 April 2026 | Brussels

NIM Industry Insights Series – Beyond Capture: CO₂ Mineralization and Carbon Circularity for a Net-Zero Industry by Carbon Dioxide Removal Mission | 21 April 2026 | Online

(NEW) Bean to Biochar to Carbon Credit by Emma Hebert & 3 others | 21 April 2026 | San Francisco, California

(NEW) Climate Executive Dinner 2030 on the Horizon by Climeworks | 21 April 2026 | San Francisco, US

(NEW) Financing Carbon Removal From Contracts to Delivery: The Next Trillion-Dollar Market by Chloé Bigio & 3 others | 22 April 2026 | San Francisco, California

CDR Connections and Coffee by Isometric | 23 April 2026 | California

CanCO2Re Webinar - CDR and Carbon Politics: The View from the Humanities | 23 April 2026 | Online

Proposed Colorado Underground Injection Control Program Class VI Primacy Public Hearing by USEPA | 24 April 2026 | Online

2026 Shanghai Climate Week CDR Summit | 24 April 2026 | Shanghai

(NEW) International carbon credits & the EU 2040 target: A blueprint for environmental integrity by BeZero Carbon | 27 April 2026 | Online

What’s Hot in Carbon Dioxide Removal – A Peek into the Future of Climate Tech by AirMiners | 28 April 2026 | Online

2026 Annual Convening by Carbon to Sea Initiative | 28-30 April 2026 | Halifax, Nova Scotia

AfricArena Nairobi Summit 2026 by AfricArena | 29 April 2026 | Nairobi County

May 2026

Climeworks Summit 2026 | 04 May 2026 | Online | Zyrich Switzerland

(NEW) Inside NextGen CDR Buyers Club: Lessons on Carbon Removal Purchasing by NextGen | 04 May 2026 | Switzerland

Reducing Risk, Time & Cost in Carbon Removal Purchasing Agreements by OSCAR | 04 May 2026 | Switzerland

(NEW) Inside Carbon Storage: A Guided Tour Underground by Flums Switzerland | 05 May 2026

From Waste to Carbon Removal: Biochar Coffee & Tea in Nature by BCHAR | 07 May 2026 | Switzerland

(NEW) Two events. One day for CDR by First Climate | 07 May 2026 | Zurich

YCNCC Spring Symposium + Fifth Anniversary by Yale Center for Natural Carbon Capture | 7-8 May 2026 | New Haven

(NEW) Achieving net zero: CO₂ removal in focus by Swiss Carbon Removal Platform | 09 May 2026 | Zurich

Carbon Removal Investment Summit 2026 | 13 May 2026 | London

Scaling CDR in the Global Hub for Finance, Policy, and Innovation by Carbon Unbound east coast | 19 & 20 May, 2026 | New York

APACdr SUMMIT by Emerald Climate | 20 May 2026 | Singapore

10 International Symposium on Soil Organic Matter | 25-29 May 2026 | Brazil

Negative Emissions Summit 2026 | 04 June 2026 | Brussels

Carbon Removal London 2026 by Supercritical | 22 June 2026 | London

Scaling CDR Summit by Isometric | 23 June 2026 | London, England

23rd International Conference on Carbon Dioxide Utilization | 6-10 July 2026 | St.Louis, Missouri

Nordic Climate Finance Summit | 3-4 September 2026 | Oslo, Norway

CDR26–CDRANet’s 2026 conference on the future of carbon dioxide removal | 20-21 October 2026 | Vancouver

Carbon Removal Events Calendar

JOB OPPORTUNITIES

Chief of Staff and Director of Partnerships at Outlier Projects | US

“Outlier Projects is a climate philanthropy advancing research on “climate stabilization,” a third pillar alongside mitigation and adaptation. It supports organizations studying Earth system risks like ice loss and carbon feedbacks, while promoting funding, policy engagement, and global research collaboration.”

Director of Research, Yale Applied Science Synthesis Program at Yale University: School of the Environment | New Haven, CT

“The Yale Applied Science Synthesis Program (YASSP) is a joint initiative of The Forest School at the Yale School of the Environment and the Yale Center for Natural Carbon Capture (YCNCC).

The program connects academic researchers, policymakers, and those managing lands to answer applied questions about how land management decisions affect the services provided by forests, croplands, wetlands, rangelands, and grasslands.”

CDR Demand and Market Development Lead at Carbon Gap | Brussels

“Carbon Gap is a philanthropically-funded, expert non-profit established in 2021 to help Europe become a world leader in deploying carbon dioxide removal.”

Founding Account Executive - Biochar at Offstream | Denver

“Offstream is the de facto dMRV and compliance platform for biochar project developers in the US.”

Betonlaborant / Concrete Lab Technician at Paebbl | Rotterdam, the Netherlands

“Paebbl’s mission is to permanently sequester CO₂ and repurpose it into essential products.”

Sourcing Manager at Climate Impact Partners

“Climate Impact Partners delivers solutions for climate action.”

Carbon Program Coordinator at Loam Bio | Calgary, Canada

“Loam Bio’s groundbreaking CarbonBuilder technology, convert CO2 into stable soil carbon.”

Head of Science at Absolute Climate

“Absolute Climate is building independent climate technology standards and quality assurance tools.”

Aggregates Director at OCO Technology | UK

“OCO Technology specialises in carbon capture, sustainable construction products and waste treatment.”

Senior R&D Chemist - Sorbent Innovation Lead (80-100%) at Climeworks | Opfikon, Zurich, Switzerland

“Climeworks is a leading high-quality carbon removal provider, combining decades of expertise in Direct Air Capture (DAC) technology with a holistic approach to carbon removal solutions.”

CDRjobs Board

PODCASTS

Defining quality standards for CDR | What Goes Up Must Come Down

“In this episode of What Goes Up Must Come Down, Simon is joined by Stacy Kauk, Chief Science Officer at Isometric, a carbon registry. Together, they explore the challenges of scaling a market where buyers do not fully trust what they are buying, suppliers struggle to finance what they are building, and the science is still catching up with the ambition.”

Size Matters | Grounded: A Climate Startup Journey

“Oh, hello there! Bet you thought you’d seen the back of Tom and his biochar… But this story’s far from over. Yes, the machine runs, the credits have sold, and the char is piling up. But if this pilot is ever going to be a real, profitable business - and if it’s ever going to have a scalable climate impact - it’s going to need to be bigger. A lot bigger. Cue: industrial-level kit, eye-watering funding gaps, and the creeping suspicion that saving the planet may require even more admin than previously feared.”

Quarterly catch up: CBAM, ETS, and AI | The CDR Policy Scoop

“In this episode of The CDR Policy Scoop, co-hosts Sebastian Manhart and Eve Tamme sit down for their unscripted quarterly catch-up to discuss what’s top of mind in CDR policy.

They open on the EU CBAM and the question of whether Article 6 credits could satisfy CBAM liabilities. They cut through social media hype to examine what has actually been decided, and whether this logic undermines the mechanism’s original purpose of incentivising domestic carbon pricing.

The conversation turns to the EU’s broader reliance on international credits, including the 5% allowance under the 2040 target. Eve walks through the layered costs that make this look far less cheap than advertised, and the supply and infrastructure constraints that compound the problem.

Sebastian flags three parallel EU processes: CBAM revision, international credits consultation, and ETS revisions, and the Negative Emissions Platform’s new ETS Needs Removals campaign. The price gap for DAC and BECCS, and how to bridge it through ETS revenues, closes out the policy discussion. Sebastian teases an upcoming paper with Rafael Cario on front-loading ETS revenues for carbon removals.

The episode ends with AI as the wildcard: a force driving up CDR demand, and potentially if the energy buildout outlasts the hype, a future catalyst for cheap direct air capture energy.”

Australia’s CDR Roadmap - with Andrew Lenton | The CDR Policy Scoop

“In this episode, co-hosts Sebastian Manhart and Eve Tamme are joined by Dr Andrew Lenton, Director of CSIRO’s CarbonLock Future Science Platform, to discuss Australia’s newly published CDR roadmap and its first novel CDR workforce report.

Andrew walks through what it took to build a credible national roadmap and why the coalition of partners, including Google as the sole private sector contributor, may matter as much as the findings themselves. He covers the technologies that surprised him most and what Australia’s unique geography means for the CDR opportunity.

The conversation turns to early policy signals: a new Australia-Canada CDR agreement, fresh federal and state-level funding, and how Australia’s co-presidency of COP31 is shaping the agenda. Andrew reflects on what it has taken to build basic CDR literacy across government as a foundation for any of this to stick.

The episode closes on workforce, Australia’s first novel CDR workforce report just landed, and Andrew outlines the four recommendations at its core. Sebastian brings in data from CDRjobs and European parallels to show why getting this right, and soon, matters.”

Will China Stand Up for Climate Policy & Carbon Dioxide Removal?—w/ Sarah Godek | Reversing Climate Change

“If the US pulls out of climate action, is there room for China or another country to fill the leadership void? Or without the US, does climate multilateralism fall apart entirely?

This episode is a direct response to my recent monologue episode, “How Carbon Removal Loses: The End of “Pre-Compliance”“, which walked through the political risks to climate and carbon removal policy in a world where the US pulls back. I looked at Canada, the EU, its various member states, and Japan as possible safe havens. One country I left out was China. So I invited Sarah Godek back on as my “sinologist on call” to help set the record straight.

Sarah Godek is a returning guest and very knowledgeable about China. Our previous episode—a conversation about realism and liberalism in geopolitics, born out of a piece she co-wrote with Grant Faber on carbon security—is linked in the resources section and is a useful first step before diving into this one.

In this episode, Sarah walks me through China’s energy security priorities, the difficult role coal plays in Chinese strategy, Tencent’s CarbonX Prize, the absence of a clear institutional home for carbon removal inside the Chinese government, and the much harder question of whether climate multilateralism can survive without American leadership.”

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YOUTUBE VIDEOS

How a Tech Founder Is Turning Wildfire Waste Into Carbon Storage | Peter Reinhardt | A Climate Change With Matt Matern

“Matt speaks with Peter Reinhardt, co-founder and CEO of Charm Industrial, about one of the most ambitious bets in climate tech: putting carbon back underground permanently. Peter explains how Charm takes wood from wildfire thinning projects in the Colorado Rockies, converts it into bio-oil through a process called pyrolysis, and injects that carbon-rich liquid deep into sandstone formations in Louisiana — where it stays for millennia. They discuss the cost curve challenge, why most carbon offsets are ineffective, what it actually takes to scale carbon removal, and the bipartisan legislation that could unlock wildfire biomass as a climate solution. Peter also shares why California’s regulatory environment has been a barrier, how AI is helping Charm’s frontline teams, and where he sees the industry heading by 2030.”

Can the Ocean Absorb More CO₂ Safely? Inside WHOI’s Ocean Carbon Removal Research | Carbon to Sea

“This video takes viewers onboard with Woods Hole Oceanographic Institution (WHOI) scientists leading the LOC-NESS project — a field research trial evaluating the environmental impact and effectiveness of ocean alkalinity enhancement (OAE) as a carbon dioxide removal solution.”

Terrapass Webinar: Get to Know the AgreenaCarbon Soil Carbon Project | Terrapass Webinar

“In this webinar, we will take a deep dive into the mechanics of high-integrity soil carbon removal. We’ll explore how the AgreenaCarbon project utilizes Verra’s VM0042 methodology to turn activities like reduced tillage, cover cropping, and organic fertilisation into robust, permanent climate contributions. We’ll address the critical “how” and “why” behind the project: from establishing rigorous baselines and ensuring additionality to how carbon credit finance directly supports farmers in overcoming initial costs like machinery investments and temporary yield shifts.”

My Most Important Video in Years: Oceanic Uptake of CO2 Enhanced by Mesoscale Eddies | Paul Beckwith

“Learn how ocean eddies (swirls of water on the order of 100 km to 300 km diameter, moving both clockwise and counterclockwise, typically spinning off from powerful western boundary currents (WBCs) like the Gulf Stream, Kuroshio Current (off Japan), Agulera Current (south of Africa), Eastern Australia Current (off east coast of Australia) and Brazil Current (off east coast of South America) naturally absorb vast amounts of CO2 from the atmosphere.”

Climate Restoration by 2050 via Localized Ocean Fertilization - LOF with Iron in Downwelling Eddies | Paul Beckwith

“Recently I had the pleasure of attending a talk for the Canadian Club of Rome Ottawa branch by Peter Fiekowsky on Climate Restoration.

Peter outlined in detail engineering plans to restore a safe climate essentially by 2050 by using a very interesting, low cost technique for CDR - Carbon Dioxide Removal, called Localized Ocean Fertilization.

In a nutshell, this involves seeding the ocean with iron at select locations near and in downwelling ocean eddies, varying in diameter from 100 to roughly 300 km. Downwelling eddies are those rotating clockwise in the northern hemisphere (use the right hand rule, curl your fingers in the direction of the ocean current and your thumb points to where vertical water flow goes), and counter-clockwise in the southern hemisphere (use the left hand rule, similar to above).”

Opportunities in Climate Tech: Biological Carbon Removal (with Mitch Rubin) | Stanford Ecopreneurship

Opportunities in Climate Tech: Engineered Carbon Removal (with Mitch Rubin) | Stanford Ecopreneurship

Henrietta Moon, Carbo Culture on Building Multi-Revenue Carbon Removal | EUVC

“In this episode, Andreas Munk Holm (EUVC) and Carmel Rafaeli (The Table) sit down with Henrietta Moon (CEO & Co-Founder, Carbo Culture) to explore how biochar is evolving from a niche concept into industrial-scale systems that lock carbon away for centuries — while building a viable business across energy, agriculture, and materials.”

Presentation of the report ‘Scaling up carbon dioxide removals’ | EU Scientific Advisory Board on Climate Change

“On 25 February 2025, the Advisory Board hosted a public webinar to present its recently published report ‘Scaling up carbon dioxide removals – Recommendations for navigating opportunities and risks in the EU’.”

Carbon Market Intelligence: Insights on Pricing, Removals, and Procurement Trends | AlliedOffsets

“The AlliedOffsets team is excited to invite you to our upcoming webinar, Carbon Market Intelligence: Insights on Pricing, Removals, and Procurement Trends.

As engagement with the voluntary carbon market grows, companies, financial institutions, and advisors are increasingly seeking reliable data to understand market movements, manage risk, and inform procurement and investment strategies.

In this session, AlliedOffsets will present a data-driven overview of key market trends, including pricing, quality, liquidity, policy signals, and offtake activity, as well as evolving demand for carbon removals. Forliance will complement this with insights from the developer and buyer perspective, exploring procurement strategies, the growing role of long-term offtake agreements, and practical market examples.”

Strengthening Biomass Carbon Removal and Storage Protocols | Clean Air Task Force

“Biomass carbon removal, or CDR, can deliver gigaton-scale climate mitigation by pairing the power of photosynthesis with engineered technologies to store carbon for centuries or longer. Some examples of biomass CDR include bioenergy with carbon capture and storage, biochar, bio-oil, and biomass burial. Strong standards are key to ensuring market and climate integrity.

This panel discussion with CATF staff and academic colleagues dove deep into the results of our new study evaluating the greenhouse gas accounting approaches used in biomass carbon removal protocols that certify carbon removal credits in carbon markets. In May 2025, CATF convened leading experts to score approaches that 25 protocols take to three core components of biomass CDR systems: biomass production, bioconversion, and carbon storage, and also features that apply across the whole process.”

Weekly Carbon Removal Updates from 06 April - 12 April 2026 | Carbon Removal Updates Bulletin

DEADLINES

Isometric updated its Biochar Production and Storage Protocol | Public consultation open until 16 April 2026

Undaunted opened applications for CDR Accelerator Cohort 2 | Deadline: 19 April 2026

(NEW) ETH Zurich launched a survey to map carbon removal ecosystem in Sub-Saharan Africa | Deadline to respond: 24 April 2026

Ireland launched a biochar socio-economic impact framework tender | Deadline: 29 April 2026

(NEW) Isometric released draft biochar mobile reactor module for public consultation | Deadline: 30 April 2026

The Office of the United Nations High Commissioner for Human Rights has launched a call for input on climate-related technologies, including geoengineering (CDR & SRM), to assess their potential impacts on human rights | ‎Deadline: 30 April 2026

EU Commission launched consultations on post-2030 climate policy | Feedback due 04 May 2026

Government of Canada launched a call for bids to enable the federal departments to buy $10M CAD CDR credits from Canadian projects | Deadline: 11 May 2026

SICTOM PEZENAS-AGDE in southern France issued a €13.7M biochar facility tender | Submission deadline: 29 May 2026

Call for Proposals: Sweden’s Energy Agency launched a $1B BECCS funding round for CO₂ capture from bioenergy | Deadline: 13 August 2026

Swedish Energy Agency opened 15M SEK funding for negative emissions R&D | Deadline: 31 August 2026

Carbon Management journal calls for CDR papers | Deadline: 13 November 2026

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1. This Week’s Top CDR Highlights

2. Commercial News

3. Research Papers

4. Web Posts

5. EGU26 CDR Papers

6. Reports

7. Upcoming Events

8. Job Opportunities

9. Podcasts

10. YouTube Videos

11. Deadlines

THIS WEEK’S TOP CDR HIGHLIGHTS

COMMERCIAL NEWS

Carbon Upcycling raised up to $10M from ATEL Ventures for CO₂-to-low-carbon cement (Betakit)

CURA secured $500K from Alberta Innovates for circular cement tech (Cura Climate)

AirSmat and Dantata Foods partnered to deploy a corn-cob biochar CDR project in Nigeria (This Day Live)

TransZero and Kita partnered on carbon insurance risk modelling (Trans Zero)

Boeing signed a 40,000 tCO₂ soil carbon credit deal with Grassroots Carbon (ESG Today)

Sensirion partnered with ClimeFi for durable CDR sourcing through 2028 (Sensirion)

Symbiosis Coalition members Google, McKinsey, and Meta signed 131,240 tCO₂ removal deals with Living Carbon (Living Carbon)

CDR.fyi and Open Standard Carbon Removal Purchase Agreement (OSCAR) have launched the first survey dedicated to understanding how CDR actors navigate CDR offtake agreements (CDR.fyi)

CUR8 and Isometric launched “The 2030 Portfolio” for diversified CDR access to buyers (CUR8)

Mombak issued first Isometric-verified enhanced weathering credits (Isometric)

Kiilto Ventures invested in Vateris for carbon-to-materials tech for construction (Stt Info)

The remove CDR accelerator program announced plans to start providing support to startups active in this sector in Latin America (remove)

Sirius Regenerative issued Colombia’s first CO₂ removal certificates via Puro.earth (LinkedIn)

Absolute Climate has released a new methodology for voluntary consultation proposing a novel CDR approach based on controlled interruption of human respiration, framing exhalation as a measurable CO₂ transfer (Cdn)

Italy announced to launch its first dedicated CDR network called Rete Italiana Rimozione Carbonio (Carbon Herald)

The Symbiosis Coalition has issued its second request for proposals for high-quality CDRs, broadening its scope beyond reforestation and agroforestry to include mangrove projects (Symbiosis Coalition)

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RESEARCH PAPERS

How the EU can utilize its carbon market to scale up carbon dioxide removal

Authors: Darius Sultani, Sebastian Osorio, Claudia Günther, Michael Pahle, et al.

Synopsis: This study evaluates how integrating permanent CDR into the EU Emissions Trading System (ETS) could influence both CDR deployment and allowance prices. Using the LIMES-EU model with updated DAC cost projections, results suggest that by mid-century, EU ETS integration could incentivize 68–86 Mt CO₂/year of BECCS and DACCS, moderating price spikes under a tightening cap. However, risks include over-reliance on future removals and potential environmental impacts from excessive BECCS. The study recommends phased, governance-informed integration, with a long-term vision of transforming the ETS into a removals trading scheme.

Clearing the air: Public sentiment on DACCS in Germany

Authors: Rodrigo Valencia Cotera, Paul Bowyer, Lars Buntemeyer

Synopsis: This study examines public acceptance of Direct Air Capture and Storage (DACCS) in Germany, where CO₂ storage has historically faced opposition. Survey results indicate low familiarity with DACCS. Positive acceptance is driven mainly by perceived benefits, while concerns about “tampering with nature” reduce acceptance. Notably, providing more information decreased acceptance, and industry and government were the least trusted actors. The study highlights the critical role of building public trust for successful DACCS deployment.

Enhanced rock weathering in acid mine drainage systems: Field evidence and passive treatment implications

Authors: Htut San Hkaung, Naito Yamashita, Nono Kimotsuki, et al.

Synopsis: In this study, acid mine drainage (AMD) systems are explored as novel sites for Enhanced Rock Weathering using basaltic mining waste. Results show rapid mineral dissolution, sustained carbon removal potential, and improved water chemistry. The approach offers dual benefits—carbon dioxide removal and passive remediation—highlighting AMD sites as scalable, resource-efficient pathways for climate mitigation.

Regulation of Coastal Weathering in Massachusetts

Authors: Ashwin Murthy, Korey Silverman-Roati, Romany M. Webb

Synopsis: In this study, coastal enhanced weathering (CEW) is examined as a carbon dioxide removal strategy, focusing on its potential and legal implications in Massachusetts. While CEW can accelerate natural carbon sequestration in coastal zones, regulatory uncertainty arises under existing U.S. federal and state environmental laws. The paper highlights the need for clarity on how these laws apply to CEW projects before large-scale deployment.

Rethinking carbon dioxide removal: a justice-centred analysis of CDR perspectives research

Authors: Delaney Pues, Anna Bridel, Valeria Cuevas, Zachary Dove & Sikina Jinnah

Synopsis: This review analyzes 177 CDR perspectives studies (2002–2025) through a justice lens. Findings show research is dominated by Global North actors, focuses on measuring support rather than dissent, and uses methods that limit marginalized voices. The study calls for: including vulnerable populations, centering justice in research questions, and encouraging researchers to reflect on their own biases to foster more equitable and inclusive CDR futures.

Cost outlook of coal power with CCS and BECCS based on a component learning curve incorporating efficiency upgrades: a case study of China

Authors: Delu Wang, Fan Chen, Chunxiao Li, Lawrence Loh

Synopsis: In this study, the future cost and benefits of CCS and BECCS in China are analyzed using a learning-curve framework incorporating efficiency upgrades. Results indicate significant potential for electricity cost reductions ($23–$56/MWh) and over 50% improvement in economic-environmental benefits as learning accumulates. Efficiency upgrades support cost decline, while capital and fuel costs dominate. Findings inform strategic planning for coal-dependent nations transitioning to low-carbon energy.

Temperature-driven decline in recalcitrant dissolved organic carbon weakens coastal macrophyte’s blue carbon storage potential

Authors: Alba Yamuza-Magdaleno, Tomás Azcárate-García, et al.

Synopsis: In this study, temperate marine macrophyte communities were assessed for carbon dynamics under warming and invasive seagrass conditions. Warming reduced the recalcitrant fraction of dissolved organic carbon by 28%, increasing labile carbon, while the invasive species had minimal impact. These changes suggest rising temperatures may weaken coastal carbon storage, with implications for global carbon budget estimates.

On the pH-dependent export of anthropogenic alkalinity in pore water through soil: Implications for enhanced rock weathering

Authors: Jacob S Jordan, Mohammad Afzal Shadab, Valentina Prigiobbe, Yoshiki Kanzaki, Noah Planavsky, Chris Reinhard

Synopsis: In this study, ERW is analyzed through a theoretical framework for pH-dependent transport of calcium and magnesium in soils. Using a Riemann-problem approach, the study models adsorption, desorption, and solute wave interactions, providing insights into bicarbonate formation and alkalinity transport. These results help interpret experimental data and advance understanding of the mechanisms driving ERW efficacy for carbon dioxide removal.

The impact of carbon risk on corporate market value: evidence from China

Authors: Zhonglu Liu; Zhengyang Xu; Kaiyue Yu

Synopsis: In this study, carbon risk is shown to significantly reduce firm value among Chinese A-share companies (2008–2023). The effect operates through operational volatility, financing constraints, and investor sentiment, while strong digital and green transformations mitigate impacts. Findings highlight mechanisms of carbon risk pricing, offering insights for investment, corporate strategy, and policy in China’s institutional context.

Exploring carbon dioxide removal strategies to help decarbonise Europe using high-resolution modelling - Preprint

Authors: Ricardo Fernandes, Alberto Alamia, Sina Kalweit, Marta Victoria

Synopsis: In this study, multiple CDR strategies, afforestation, perennialisation, biochar, and enhanced rock weathering, are integrated into a high-resolution European energy system model. Results show that using these CDRs reduces system costs by 9%, fully utilizes regional potentials, and eliminates the need for direct air capture when combined with CO2 transport and underground storage, highlighting cost-effective pathways to climate neutrality.

Reduce, Remove, Avoid? Making a Market for Peatland Carbon Credits in the UK

Authors: Aneurin Merrill-Glover, James Palmer, Roosa

Synopsis: This study examines how peatland carbon credits are positioned within UK natural capital markets. Restoration through rewetting is crucial for climate mitigation, yet current market rules favor removal credits over emission-prevention credits, limiting investment in peatlands. Interviews and analysis reveal efforts to redefine emission accounting and responsibility pathways, highlighting tensions between market logics and the ecological, social, and cultural value of peatlands.

Long-term scenarios and energy system impacts of technological carbon dioxide removal deployment in Finland

Authors: Johanna Mehnert, Kati Koponen, Tomi Lindroos, Tiina Koljonen and Heidi Kirppu

Synopsis: This study evaluates the energy system impacts of CDR in Finland to 2050, modeling BECCS, biochar, DACCS, and enhanced weathering (EW). Results show DACCS drives most CDR growth, EW is fully utilized, and biomass constraints limit BECCS and biochar expansion. Binding CDR targets ease achieving net-zero emissions, but substantial deployment across technologies is still needed, highlighting systemic interactions between CDR and the broader energy system.

A critical review of carbon emission mitigation, carbon sink expansion, and leveraging ecosystem services

Authors: Qingshan Li,Lele Zhang,Lei Zhao &Jiaoting Peng

Synopsis: This study synthesizes emission mitigation, carbon sink expansion, and ecosystem-based approaches to provide a unified framework for climate stabilization. Results show that combining renewable energy, sustainable industry, engineered CDR, and ecosystem restoration can cut global emissions by over 50%, while delivering co-benefits for biodiversity and resilience. Integrated deployment of all three pillars, supported by coherent policy and international cooperation, is essential to meet Paris Agreement targets.

Assessing the Effect of a Deep-Rooted Grass on Belowground Carbon Storage in Cultivated Land: Insights From a Multi-Site US Study

Authors: Eric W. Slessarev, Jennifer Pett-Ridge, Kyungjin Min, et al.

Synopsis: This study examines the impact of deep-rooted switchgrass on soil carbon in the central and eastern USA. While surface SOC gains were modest and not statistically significant, root carbon consistently increased under switchgrass, adding ~0.6 kg C m⁻² to the top 1 m of soil without accelerating SOC decomposition. Results indicate that reintroducing deep-rooted perennials can meaningfully enhance belowground carbon stocks compared to shallow-rooted annual crops.

Geospatial Cost Comparison of Thermal Energy Technologies: A Sorbent-based Direct Air Capture Case Study

Authors: Caleb H. Geissler, Robin X. Zou, Mario Ramos, et al.

Synopsis: This study assesses decarbonized heat options for industrial applications, including sorbent-based DAC, across the US. Geothermal offers the lowest costs when resources are suitable ($16/MWh), while concentrated solar often outperforms heat pumps where electricity is carbon-intensive or expensive. Results highlight that optimal heat decarbonization depends on location, technology, and cost metric, emphasizing the need for geospatially informed decisions in transitioning heat demand to low-carbon energy.

Resilience of the gelatinous zooplankton species Oikopleura dioica to ocean alkalinity enhancement

Authors: Amrita Bhaumik, Nicolás Sánchez, Silvan Urs Goldenberg, et al.

Synopsis: This study examines the effects of ocean alkalinity enhancement (OAE) on the gelatinous zooplankton Oikopleura dioica in a 53-day mesocosm experiment. Across ΔTA 0–600 μmol kg⁻¹ using olivine and slaked lime, OAE had no detectable impact on O. dioica abundance, feeding, or house production; variations were driven by prey availability. Results suggest this species is physiologically resilient to moderate OAE, highlighting the need to include gelatinous zooplankton in future ecosystem impact assessments at higher alkalinity levels.

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WEB POSTS

Carbfix recognized in WIPO Magazine for carbon mineralization innovation (Carbfix)

Policy Paper: Defending Net-Zero — A New Role for Carbon Dioxide Removal (Zentrum Liberale Moderne)

Japanese startup secures domestic partners to pilot direct air capture applications (Carbon Pulse)

Marine carbon dioxide removal is a big idea - with big hurdles (RNZ)

Corporate demand is driving a boom in farmland carbon credits (Trellis)

The Promise and Peril of Ocean Carbon Removal (Impakter)

Stashing CO₂ in the sea (Knowable Magazine)

Bridging the Gap: How Carbon Credit Buyers Can Drive Industrial Decarbonization With Certainty (Carbon Cure)

Table Media - How negative emissions could be integrated (Table Media)

Regional Modeling as a Tool to Support Community Dialogue (CWorthy)

Rock On: The ERW Data Quarry Just Doubled Its Data (Cascade Climate)

From pulp and paper to carbon capture: CO280’s model for high-quality, permanent CDR at scale (NorthX)

Personal Reflections on structuring the first publicly announced CRCF transaction (LinkedIn)

Explainer: The Vast Promise – And Uncertain Future – Of Carbon Removals (Earth.Org)

RepAir Carbon opens a Luxembourg office to scale its electrochemical carbon capture tech across Europe (TNW)

Nanostructured sorbent and electro-resistive heating lower costs for DAC system (Climate Engineering)

Mar. CDR: Offtakes hit $231m, developer count at 4-month high (QC Intel)

NACW26: Policy key driver in CDR future as voluntary offtakes stutter - analyst (Carbon Pulse)

INTERVIEW: Brazilian developer debuts in ERW methodology, expanding CDR portfolio (Carbon Pulse)

How Can Direct Air Capture Scale to Deliver Real Carbon Removal for Climate Solutions (Tech Times)

The Modular Approach to Direct Air Capture (The Energy Pioneer)

EU Eases Carbon Price Pressure With Targeted ETS Tweak (Carbon Herald)

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EGU26 CDR PAPERS

Session: CL3.2.8: Carbon Dioxide Removal in Climate Mitigation Strategies: Potentials, Limits, Measurement, and Risks

Dusting the rust off ocean iron fertilization research studies for mCDR

Measuring ocean pH with ambient noise

pH-Equilibrated Ocean Alkalinization: Mesoscale Evaluation of Long-Term Stability

Potential influence of applying glacial rock flour for stimulating primary production for marine carbon dioxide removal

The phosphorus bottleneck in bioenergy-based CDR – and how enhanced rock weathering could break it

Temperature outcomes of enhanced rock weathering deployment scenarios constrained by soil albedo measurements

Carbon dioxide removal through biochar and enhanced weathering: towards a scalable process-based modelling approach

Capture of carbon dioxide by biologically induced precipitationof calcium carbonates by anoxygenic phototrophic sulfur bacteria

Deep soil burying of woody debris as the most effective, least expensive, and most sustainable carbon dioxide removal strategy

Carbon Dioxide Removal by Construction Waste: Experimental Assessment of CO2 Capture Efficiency

The impacts of ocean- and land-based Carbon Dioxide Removal on Planetary Boundaries

Incorporating Geological Carbon Storage Constraints in Integrated Assessment Models

Is the removal of atmospheric CO2 via Ocean Alkalinity Enhancement feasible for climate mitigation?

Towards sustainability-aware carbon dioxide removal deployment

Competing for land: mapping potentials and trade-offs of land-based carbon dioxideremoval under climate targets

Climate impacts of afforestation in temperate regions: a regional assessment in Mongolia

Enhanced weathering and biochar can contribute over 50% of carbon removal while reducing costs and resource depletion in China

Subnational Patterns in Carbon Dioxide Removal Deployment in the United States

River Alkalinity Enhancement as a Carbon Dioxide Removal Strategy: a Norwegian Case Study

Coastal alkalinity addition within safe environmental thresholds: numerical experiments in Halifax Harbour and surrounding areas (Canada)

Toward Credible Carbon Dioxide Removal: Harmonized Accounting and Data Gaps Across Six CDR Approaches

Certification and MRV requirements to operationalise geological offsets in the aviation sector

Advancing Monitoring Reporting and Verification for marine Carbon Dioxide Removal

Recarbonation of lime-based systems: new quantitative evidence for permanent mineral carbon dioxide removal (CDR).

Quantifying Humidity-Driven Regeneration Heat Penalties in Indoor DAC with Amine-Functionalized Sorbents

Challenges of efficiency calculations for OAE in the Earth System Model FOCI

Using the Seasonal Cycle in the Ocean Carbonate System for Monitoring and Guiding OAE

Quantifying pCO₂ Evasion at River Steps: Hydraulic Controls Under Baseline and Alkalinity-Dosed Conditions

Karst carbon sink: Evidence from long term monitoring of CO2 and CH4 fluxes with stable isotope insights in subtropical Southwest China

Enhanced Rock Weathering–Induced Carbon Dioxide Removal in Flooded Rice Paddies: Mineral-Based Monitoring from Field Experiments in Japan

A Fundamental Study on Soil-Based Carbon Dioxide Removal Using Amine-Functionalized Modified Red Mud

Baseline Assessment of Carbonate System Parameters and Trace Metals in the North Sea: Implications for Monitoring Ocean Alkalinity Enhancement

Understanding the ethics and scalibility of emerging Direct Air Capture approaches

Equivalence between carbon dioxide emissions and removals: A framework for net-zero accounting

Evaluating the Potential and Risks of Carbon Dioxide Removal (CDR) and Storage (CCS) Strategies in Global Climate Mitigation: An Integrated Assessment Modeling Approach

Physical controls on alkalinity variability in Halifax Harbour: The roles of wind and tides

Temporary carbon dioxide removal to offset short-lived climate forcers

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REPORTS

Direct Air Capture Sorbent Market (2026–2036) (FactMR)

State of Carbon Credits 2025 (Sylvera)

Carbon Dioxide Removal Technologies: Market Overview and Offtake (World Economic Forum & ClimeFi)

Building a workforce for novel carbon dioxide removal technologies in Australia (UTS)

The Biogenic Balance: Characterising emissions, matching removals and mapping EU policies (Carbon Gap)

Community Impact (Octavia Carbon)

Why high-quality biochar credits are worth the premium (Climeworks)

Common LCA/TEA Methodology and Case Studies for Direct Air Capture (DAC) (Mission Innovation)

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UPCOMING EVENTS

April 2026

CityCDR webinar: How to Build Carbon Sink Cities by City CDR Initiative | 07 April 2026 | Online

No Net Zero without Nuclear - A Conversation with Zion Lights by Sebastian Manhart | 07 April 2026 | Online

AgreenaCarbon Soil Carbon Project | 08 April 2026 | Online

Isometric Standard 2.0: What it means for your project by Isometric | 14 April 2026 | Online

CORE Carbon Removal Framework by Carbon180 | 14 April 2026 | Online

(NEW) Symbiosis RFP Developer Webinar | Mangroves | 14 April 2026 | Online

(NEW) Carbon Removal: The Next Generation by OpenAir Collective | 14 April 2026 | Online

Carbon Removal: The Solution Climate Neutrality Can’t Ignore by RIRC | 14 April 2026 | Padua, Veneto

(NEW) Symbiosis RFP Developer Webinar | Reforestation and Agroforestry | 16 April 2026 | Online

Launch of Italy’s Carbon Removal Readiness Assessment Report by Carbon Gap | 20 April 2026 | Rome

(NEW) Carbon Removal Happy Hour at SF Climate Week 2026 by Theresa Rößler & others | 20 April 2026 | California

CDR Buyer’s Circle - SFCW Edition by CO280 | 21 April 2026 | San Francisco, California

No Wasted Opportunities: Embedding Carbon Removal in the Management of Wastewater, Concrete and Mine Waste by Carbon Gap | 21 April 2026 | Brussels

The Second Annual Climate Restoration Summit by EarthX and the Foundation for Climate Restoration (F4CR) | 21 April 2026 | Dallas, TX

Deep Sky: Eliminating Carbon – A New Frontier for the Climate Economy: Towards a sustainable future through green technologies | 21 April 2026

Embedding Carbon Removal in the Management of Wastewater, Concrete and Mine Waste by Carbon Gap | 21 April 2026 | Brussels

(NEW) NIM Industry Insights Series – Beyond Capture: CO₂ Mineralization and Carbon Circularity for a Net-Zero Industry by Carbon Dioxide Removal Mission | 21 April 2026 | Online

(NEW) CDR Connections and Coffee by Isometric | 23 April 2026 | California

CanCO2Re Webinar - CDR and Carbon Politics: The View from the Humanities | 23 April 2026 | Online

Proposed Colorado Underground Injection Control Program Class VI Primacy Public Hearing by USEPA | 24 April 2026 | Online

(NEW) 2026 Shanghai Climate Week CDR Summit | 24 April 2026 | Shanghai

What’s Hot in Carbon Dioxide Removal – A Peek into the Future of Climate Tech by AirMiners | 28 April 2026 | Online

2026 Annual Convening by Carbon to Sea Initiative | 28-30 April 2026 | Halifax, Nova Scotia

(NEW) AfricArena Nairobi Summit 2026 by AfricArena | 29 April 2026 | Nairobi County

May 2026

Climeworks Summit 2026 | 04 May 2026 | Online | Zyrich Switzerland

(NEW) Reducing Risk, Time & Cost in Carbon Removal Purchasing Agreements by OSCAR | 04 May 2026 | Switzerland

(NEW) From Waste to Carbon Removal: Biochar Coffee & Tea in Nature by BCHAR | 07 May 2026 | Switzerland

(NEW) YCNCC Spring Symposium + Fifth Anniversary by Yale Center for Natural Carbon Capture | 7-8 May 2026 | New Haven

(NEW) Carbon Removal Investment Summit 2026 | 13 May 2026 | London

Scaling CDR in the Global Hub for Finance, Policy, and Innovation by Carbon Unbound east coast | 19 & 20 May, 2026 | New York

APACdr SUMMIT by Emerald Climate | 20 May 2026 | Singapore

10 International Symposium on Soil Organic Matter | 25-29 May 2026 | Brazil

Negative Emissions Summit 2026 | 04 June 2026 | Brussels

(NEW) Carbon Removal London 2026 by Supercritical | 22 June 2026 | London

Scaling CDR Summit by Isometric | 23 June 2026 | London, England

23rd International Conference on Carbon Dioxide Utilization | 6-10 July 2026 | St.Louis, Missouri

Nordic Climate Finance Summit | 3-4 September 2026 | Oslo, Norway

CDR26–CDRANet’s 2026 conference on the future of carbon dioxide removal | 20-21 October 2026 | Vancouver

Carbon Removal Events Calendar

JOB OPPORTUNITIES

Head of Agronomic Benefits / Senior Agronomic Benefits Manager at InPlanet | Piracicaba (On Site/ Hybrid)

“InPlanet is a mission-driven, remote-first ClimateTech startup headquartered between Germany and Brazil with hubs in Sao Paulo, Rio de Janeiro, New York and London.”

Direct Air Capture (DAC) Engineer - Test Engineer at DACMA | Hamburg

“DACMA GmbH, headquartered in Hamburg, Germany, is a pioneering DAC manufacturer for high-quality DAC systems and carbon credits.”

Government Affairs Advisor at Carbon180 | Washington, District of Columbia, United States

“Carbon180 is a new breed of climate NGO on a mission to reverse two centuries of carbon emissions.”

Head of Legal at InPlanet | Remote Within Brazil

“InPlanet is a mission-driven, remote-first ClimateTech startup headquartered between Germany and Brazil with hubs in Sao Paulo, Rio de Janeiro, New York and London.”

EU Market Development, Climate at Stripe | London

“Stripe is a financial infrastructure platform for businesses. Millions of companies - from the world’s largest enterprises to the most ambitious startups - use Stripe to accept payments, grow their revenue, and accelerate new business opportunities.”

Procurement Manager, Development & Contract Manufacturing at Charm Industrial | Fort Lupton, CO

“Charm Industrial’s mission is to return the atmosphere to 280 ppm CO₂. We convert excess inedible biomass into carbon-rich bio-oil and inject it into underground storage for permanent carbon removal.”

Construction Project Management Director at Capture6 | CA, US

“Capture6 is developing desalination and brine management solutions and creating environmental benefits to accelerate the transition to a decarbonized global economy.”

Senior Expert on Implementation of Carbon Removal Strategy at Allianz SE | Germany

“Allianz SE are recognized as a trusted partner for protecting and growing your most valuable assets, offering a comprehensive portfolio of products, including property and casualty insurance, life and health insurance, and asset management services, tailored to meet the various needs of individual and corporate clients worldwide.”

Senior Business Development Manager Carbon Markets (German-speaking) at Carbonfuture | Based in Switzerland within commuting distance to Zürich

“Carbonfuture is building the trust infrastructure needed to scale durable carbon removal, a critical piece for us all to reach net zero.”

Partnerships Operations Analyst at Puro.earth

“Puro.earth is the world’s leading crediting platform for engineered carbon removal.”

CDRjobs Board

PODCASTS

Sustaera - electric DAC | Reviewer 2 does geoengineering

“@geoengineering1 interviews Cory Sanderson, CTO and co-founder of Sustaera, a North Carolina-based Direct Air Capture (DAC) startup focused on low-cost carbon capture, separations chemistry, and process scale-up.

Sanderson traces his journey from Air Products, where he worked on vacuum swing adsorption CO₂ capture for an SMR hydrogen plant and encountered economic and infrastructure constraints, to founding Sustaera. He also explains the company’s shift from CO₂-to-methane materials, which depended on costly clean hydrogen, to a pure DAC approach.

He then outlines Sustaera’s system, which utilises a fixed, cartridge-based monolithic contactor with laminar-flow channels and a conductive, structured sorbent that integrates resistive (Joule) heating directly into the material, thereby improving efficiency, stability, and regeneration speed.

He highlights the novelty of the design, noting that Sustaera has achieved over 90% heating efficiency in lab tests, 20-30 minute adsorption cycles, and multi-year sorbent lifetimes. With a modular, catalytic-converter-style manufacturing approach, the company is currently at TRL 5, has pre-sold removals at $700/ton to Stripe and Shopify, and is raising $8.6M to build its first outdoor commercial unit.

For more details, visit: https://www.sustaera.com/”

Coastal Resilience and oCDR with Carbon Removal Standards Initiative’s Dr. Gabby Kitch and Anu Khan | Plan Sea Podcast

“In this episode of Plan Sea, hosts Anna Madlener and Dr. Wil Burns sit down with Dr. Gabby Kitch and Anu Khan from the Carbon Removal Standards Initiative (CRSI) — a nonprofit organization using science and policy to unlock carbon dioxide removal (CDR) opportunities — to break down their recently published roadmap, Our Coasts, Resiliency, and Carbon Dioxide Removal. The report identifies three coastal resilience pathways that offer possibility for alignment with ocean-based carbon dioxide removal.”

CDR Buyers Deep Dive - Part 1: Why The £$€¥ is Anyone Buying This? | The Carbon Removal Show

“In the first part of our buyers deep dive, Tom and Emily start with a deceptively simple question: why is anyone buying carbon removal at all? In a market with no universal mandate, high prices, and a dash of reputational risk, the real surprise is not that buying is hard. It’s that any company manages to do it in the first place.”

Lorena Neira - ‘Building Climate Tech for the Ocean’ | A Drop in the Ocean – The Podcast Amplifying Ocean-Caring Voices

“In this episode of A Drop in the Ocean, I sit down with Lorena Neira - climate scientist turned entrepreneur and co-founder of Blusink.

Lorena is working at the intersection of ocean science, carbon removal, and ecosystem restoration – building technology that doesn’t fight nature, but works with it.

We explore her journey from open-ocean research to launching a ClimateTech startup, and the challenge of turning complex science into something the world can actually understand, trust, and adopt.

Blusink’s approach is deceptively simple: using engineered materials placed on the seafloor to accelerate natural carbon capture while restoring marine ecosystems.

But behind that simplicity sits a much bigger story.

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YOUTUBE VIDEOS

Webinar Recording: Examining MRV practices across five OAE project | Carbon to Sea

“On March 31st, 2026, Carbon to Sea hosted this “Examining MRV Practices Across Five OAE Projects” webinar featuring leading scientists from the five projects included in our recently published MRV Database. The virtual event focuses on introducing the database and its features, as well as each project’s monitoring approach, rationale, trade-offs, challenges, and future plans.

The Interactive MRV Database is designed to be a living tool that will be updated approximately once a year as new projects launch and practices evolve. Beyond updates, we encourage projects to submit information for consideration and inclusion. We aim to better understand and document emerging practices, especially around measurement strategies, sensor development, and the use of this dataset to benchmark and improve MRV.”

Debunking biogenic emissions | Carbon Gap

“These emissions, from agriculture, waste, and ecosystem change, make up a significant share of global greenhouse gases. Yet they are often poorly accounted for and rarely addressed directly in policy.

Our analysis shows a striking mismatch: human-caused biogenic emissions are currently around 9x larger than the temporary removals intended to balance them.”

Microalgae Carbon Fixation and Sinking | Puro • earth

Enhanced Rock Weathering - Updated Edition 2025 | Puro • earth

Climate Repair: Hope or Hype? at Cambridge Festival | Centre for Climate Repair

“As global temperatures continue to rise, the idea of “repairing” the climate is capturing public imagination — and stirring controversy. From ocean-based carbon removal to solar radiation management, a host of interventions are being proposed as essential tools to combat climate change, while others warn they are risky distractions from cutting emissions and transforming our energy systems.

This engaging panel discussion will explore the growing field of climate repair and ask whether it represents genuine hope for a cooler planet, or simply the latest hype. Our expert speakers will examine the science behind these technologies, their potential benefits and risks, and the ethical and political questions surrounding their deployment.

With time for audience questions, this session promises an open and lively discussion about one of the most debated topics in climate science today. Whether you are an optimist, a sceptic, or simply curious, Climate Repair: Hope or Hype? invites you to join the conversation and form your own view on repairing our planet.”

This is CDR: Buying Back the Future: Tips from Leading Carbon Removal Buyers - CRC 20226 Webinar #6 | OpenAir

“Our sixth webinar in the OpenAir Collective’s 2026 Carbon Removal Challenge monthly webinar series featured a panel on purchasing carbon removals, with Carbon Direct’s Luke Hawbaker, Wren’s Sophie Westover, Shopify’s Mitchel Selby, and Milkywire’s Aidan Preston.

They discussed their carbon removal purchasing programs and portfolios, purchasing criteria, lessons learned, and advice to student teams participating in the Challenge.”

Scrubbing the Skies: Biodiversity implications of land-intensive carbon dioxide removal | Institute for Responsible Carbon Removal

“Decarbonization scenarios heavily rely on land-intensive carbon dioxide removal (CDR) to achieve ambitious climate targets. While carefully designed CDR programs can effectuate sustainable carbon removal, and in some cases environmental co-benefits, large-scale CDR reliance could also pose a critical risk to biodiversity conservation in some regions. Analysing scenario-based land allocation patterns for CDR allows us to scrutinize potential deployment implications and to suggest ways to foster both carbon removal and biodiversity protection.”

Canada’s $100M Bet on Carbon Removal | Na’im Merchant | The Climate Cycle

“What we cover:

-Why Na’im left global health for carbon removal

-What $100M actually unlocks - and why a government buyer matters

-The economic argument: how CDR saves Canada money on the path to net zero

-Industrial integration: mining, steel, and forestry as CDR opportunities

-Trough of disillusionment or normal growing pains?

-The US pullback: genuine competitive opening for Canada, or missed opportunity?

-What policy and capital levers need to be pulled to realize this gigatonne-scale potential.”

TLRS Podcast - Episode 4: Making Carbon Dioxide Removal a Reality (Haley McKey) | Lab Rats Education

“In Episode 4 of The Lab Rats Podcast we dive into an in-depth interview with former US Department of Energy analyst and current fellow with the Kleinman Center for Energy Policy at UPENN, Haley McKey.

Episode 4 explores Haley’s work in #ethical & #sustainable #carbondioxide removal CDR techniques and associated research projects. We talk about how state and federal policies impact the field, the importance of engagement and communication to address social justice and environmentalism priorities, and how Massachusetts is trying to capitalize on the heat that data centers produce to reduce carbon at a lower cost. Trust me, you won’t want to miss this conversation.”

OA Alliance Webinar: Ocean Acidification and Marine Carbon Dioxide Removal February 18, 2026 | OA Alliance

“Halting the ongoing release of Anthropogenic CO2 and other greenhouse gas emissions is the first and most important action needed to combat climate change and ocean acidification. Increasingly, governments are being asked to consider marine carbon dioxide removal (mCDR) strategies as part of broader CDR agendas and as a direct response to ocean acidification.

To support government members of the OA Alliance who are navigating this nexus, the OA Alliance will release and discuss materials to help them understand the links between mCDR and OA— particularly, the state of the science, as well as how particular actions might achieve specific desired goals.”

Webinar Recording: Examining MRV practices across five OAE projects | Carbon to Sea

“On March 31st, 2026, Carbon to Sea hosted this “Examining MRV Practices Across Five OAE Projects” webinar featuring leading scientists from the five projects included in our recently published MRV Database. The virtual event focuses on introducing the database and its features, as well as each project’s monitoring approach, rationale, trade-offs, challenges, and future plans.

The Interactive MRV Database is designed to be a living tool that will be updated approximately once a year as new projects launch and practices evolve. Beyond updates, we encourage projects to submit information for consideration and inclusion. We aim to better understand and document emerging practices, especially around measurement strategies, sensor development, and the use of this dataset to benchmark and improve MRV.”

Weekly Carbon Removal Updates from 30 March - 05 April 2026 | Carbon Removal Updates Bulletin

DEADLINES

ClimeFi opened Beyond 2030 RFP for 100k–500k t durable CDR | Submissions close: 08 April 2026

(NEW) World Ocean Council and PONANT opened a 2027 call for ocean research projects, offering ship-based berths for in situ studies, including mCDR | Deadline: 10 April 2026

Watershed opened 2026 carbon removal RFP, inviting developers to supply credits for its network of 800+ global companies | Deadline: 10 April 2026

Isometric updated its Biochar Production and Storage Protocol | Public consultation open until 16 April 2026

Undaunted opened applications for CDR Accelerator Cohort 2 | Deadline: 19 April 2026

(NEW) Ireland launched a biochar socio-economic impact framework tender | Deadline: 29 April 2026

The Office of the United Nations High Commissioner for Human Rights has launched a call for input on climate-related technologies, including geoengineering (CDR & SRM), to assess their potential impacts on human rights | ‎Deadline: 30 April 2026

EU Commission launched consultations on post-2030 climate policy | Feedback due 04 May 2026

Government of Canada launched a call for bids to enable the federal departments to buy $10M CAD CDR credits from Canadian projects | Deadline: 11 May 2026

(NEW) SICTOM PEZENAS-AGDE in southern France issued a €13.7M biochar facility tender | Submission deadline: 29 May 2026

Call for Proposals: Sweden’s Energy Agency launched a $1B BECCS funding round for CO₂ capture from bioenergy | Deadline: 13 August 2026

Swedish Energy Agency opened 15M SEK funding for negative emissions R&D | Deadline: 31 August 2026

Carbon Management journal calls for CDR papers | Deadline: 13 November 2026

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JUMP TO SECTION

1. This Week’s Top CDR Highlights

2. Commercial News

3. Research Papers

4. Web Posts

5. Reports

6. Theses

7. Upcoming Events

8. Job Opportunities

9. Podcasts

10. YouTube Videos

11. Deadlines

THIS WEEK’S TOP CDR HIGHLIGHTS

COMMERCIAL NEWS

Liferaft signed a 10-year Microsoft offtake for 1M biochar credits in the U.S Midwest (Liferaft)

Altitude purchased 305,000+ tonnes of biochar based CDR credits from Empacar S.A. in Bolivia (Altitude Carbon)

Google struck a deal with Holocene for 100,000 tonnes of DAC-based CO₂ removal at about $100/t for delivery in the 2030s (One Green Planet)

Octavia Carbon partnered with Bamburi Cement to explore CO₂ mineralisation in concrete (LinkedIn)

CURA and Sylvera partnered to scale commercial value of low-carbon cement (Sylvera)

Climeworks partnered with Lithos Carbon to bring verified ERW credits to market (Carbon Herald)

Carbon Removal Canada and BMO launched a partnership to accelerate Canada’s carbon removal ecosystem (Carbon Removal Canada)

ClimeFi structured the first EU CRCF carbon removal deal, with buyers including Nasdaq and Adyen securing BECCS credits from Stockholm Exergi (ClimeFi)

Pension Insurance Corporation expanded its CDR portfolio through another CUR8 transaction (Carbon Herald)

The UK Woodland Carbon Code entered IC-VCM assessment for Core Carbon Principles compliance (QC Intel)

Re.Green won a Brazilian auction to restore 6,000 hectares and generate 1.3M carbon credits (QC Intel)

Planet Savers signed an MOU with Aizawa High Pressure Concrete in Japan (PR Times)

Wakefield Biochar partnered with Chip Wade to promote carbon-negative soil solutions in the U.S (Biochar Today)

Arukah Capital issued its first CORCs under Puro.earth in Southeast Asia (LinkedIn)

Isometric certified Version 2.0 of the Isometric Standard following a public consultation (Isometric)

Aircapture and Corning partnered to scale direct air capture technology (Voice of Alexandra)

Inprocess has been awarded a contract to deliver an operator training simulator for Stockholm Exergi’s BECCS plant in Sweden (Hydrocarbon Processing)

Euthenia Energy launched its first biochar production site in Spain (LinkedIn)

Aircapture and Almanac Beer Co. produced the world’s first beer carbonated with DAC-captured CO₂ (Gas World)

Holcim Romania secured financing from CINEA for carbon capture in cement production (Romania Insider)

Isometric launched a Buyer Dashboard for tracking carbon credit certification progress (Isometric)

Inherit Carbon Solutions started operations on a biogas-based BECCS project in Norway with HoopCO2 and Northern Lights JV (Inherit Carbon Solutions)

Ctrl-S launched to archive intellectual property from failed direct air capture startups (Heatmap)

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RESEARCH PAPERS

CBDR and CBAM: who will pay the price of carbon?

Authors: Vishal Sharma , Mayank Prabha Tomar

Synopsis: This study examines the Carbon Border Adjustment Mechanism under the Fit for 55, focusing on its impacts on developing countries and alignment with the Paris Agreement and World Trade Organization rules. It finds CBAM may raise costs and limit market access for poorer nations, while raising concerns over fairness, legality, and equity in global climate governance.

Assessing CO2 storage in Danish biochars using inertinite benchmarking

Authors: Henrik I. Petersen, Jonathan H. Lindhardt, Natalia Lukasik, et al.

Synopsis: This study assesses the Carbon Dioxide Removal potential of Danish biochars from various feedstocks. High-temperature pyrolysis (>575 °C) maximizes inertinite carbon (Cinert), with wood biochar storing 3.05 tCO₂e/t and wheat straw and digestate achieving 2.21 and 1.41 tCO₂e/t, respectively. Sewage sludge shows the lowest potential. Findings highlight feedstock and pyrolysis temperature as key determinants of biochar’s carbon storage capacity.

Review of Direct Air Capture Systems Powered by Nuclear Energy

Authors: Taejun Song, Joohyung Jung and Seongmin So

Synopsis: This review examines the integration of Direct Air Capture with nuclear power to enable negative-emission CO₂ removal. DAC extracts CO₂ from ambient air but is energy-intensive, requiring electricity and heat for sorbent regeneration. Nuclear power offers stable, carbon-free energy to meet these demands. The paper compares DAC configurations, analyzes energy needs, explores integration strategies, and highlights technical and economic challenges for large-scale nuclear–DAC deployment.

Responsibility for emissions and mitigation capability should guide use of carbon removal offsets

Authors: Matthew J. Gidden, Gaurav Ganti, William F. Lamb, Andy Reisinger, Saphira Rekker

Summary: Achieving net-negative global CO₂ emissions is essential to stabilize and reduce global temperatures. Carbon removal is critical for offsetting emissions from “hard-to-abate” sectors that persist even at net zero. The allocation of limited carbon removal resources should follow the equity and fairness principles of the Paris Agreement.

Unveiling Advances in Membrane Materials for CO2 Separation and Direct Air Capture (DAC): From Membrane Design to Applications

Authors: Guoqiang Li, Jakub Zdarta, Teofil Jesionowski, Agata Zdarta

Synopsis: This study reviews membrane-based direct air capture (m-DAC) for CO₂ removal from ambient air. It examines recent advances in membrane materials and multistage process designs, highlighting their higher energy efficiency, scalability, and lower carbon footprint compared with conventional DAC. The study identifies current research gaps, technological challenges, and outlines a roadmap for future development, emphasizing m-DAC’s potential as an effective carbon-negative strategy.

Investing in Carbon Dioxide Removals: A new analytical and policy paradigm

Authors: Mark Workman, Aoife Brophy, Astha, Madison Cuthbertson, Lauren McCormack, Edoardo Taricco, Quillan Shaw, Jordan Calverley

Synopsis: This article examines the emerging complexity of Carbon Dioxide Removal markets, highlighting the interplay of market creation and demand-driven dynamics. It argues that current policy tools inadequately capture this complexity and advocates for exploratory, participatory approaches. Engaging public and private actors through integrated deliberation can guide investment, reduce risk, and enable timely, robust interventions to scale CDR technologies effectively.

Assessment of solid ikaite release into seawater – implications for ocean alkalinity enhancement

Authors: Stefan Baltruschat, Jens Hartmann, Niels Suitner, Charly A. Moras, Carl Lim, Laura Bastianini, Phil Renforth

Synopsis: This study evaluates Ocean Alkalinity Enhancement using ikaite (CaCO₃·6H₂O) as a dissolvable carbonate feedstock. Lab experiments show ikaite dissolves efficiently in cold waters (<10 °C), releasing 85–100 % alkalinity, but exhibits lower efficiency (50–80 %) and rapid partial transformation at 10–26 °C. Results highlight a trade-off between dissolution rate, CO₂ uptake, and particle size, emphasizing temperature-dependent performance for effective OAE deployment.

Electrodeposition of Carbon-Trapping Minerals in Seawater for Variable Electrochemical Potentials and Carbon Dioxide Injections

Authors: Nishu Devi, Xiaohui Gong, Daiki Shoji, Amy Wagner, Alexandre Guerini, Davide Zampini, Jeffrey Lopez, Alessandro F. Rotta Loria

Synopsis: This study investigates Electrochemical Seawater Splitting, demonstrating simultaneous hydrogen production, CO₂ sequestration, and mineral precipitation. By optimizing voltage, current, and CO₂ flow, calcium- and magnesium-based minerals can be efficiently generated for construction and environmental uses. Results highlight seawater electrolysis as a scalable, multifunctional approach combining renewable energy, carbon removal, and sustainable material production.

Ocean alkalinity enhancement reduces silica ballasting during export due to amplified dissolution - Preprint

Authors: Philipp Suessle, Kai Georg Schulz, Joana Barcelos e Ramos, et al.

Synopsis: This study evaluates the impacts of Ocean Alkalinity Enhancement on phytoplankton dynamics and particle export in the North Sea. While overall bloom magnitude remained unchanged, elevated pH reduced silica ballasting in suspended and sinking particles, potentially shortening carbon sequestration timescales. Findings highlight how OAE-induced chemical shifts can affect export efficiency, emphasizing the need to consider ecological and biogeochemical interactions for effective and safe CO₂ removal.

A Novel Soil Porewater Extraction Technique for Enhanced Rock Weathering Products: SATuration - Centrifugation - Preprint

Authors: Kirstine Skov, Anežka Radkova, Kitty Agace, Talal Albahri, Matt Aitkenhead, Tzara Bierowiec, David Boldrin et al.

Synopsis: This study evaluates a new monitoring method for Enhanced Rock Weathering, a promising Carbon Dioxide Removal strategy. The SAT-C technique improves soil porewater extraction by overcoming moisture limitations, offering greater accuracy and consistency than existing methods. Results show strong agreement with conventional sampling, supporting more reliable MRV and scalable carbon accounting for ERW deployment.

Alkaline solid waste for carbon dioxide mineralization: a review

Authors: Kairui Hu, Sining Lyu, Lianzheng Gui, Ning Zhang, Xiaofeng Gao, Jian Zuo, Huabo Duan & Jiakuan Yang

Synopsis: This review examines carbon dioxide mineralization using alkaline industrial wastes as a pathway for Carbon Dioxide Removal. Materials such as steel slag and gypsum can capture CO₂ and produce useful construction substitutes. The process could remove up to 310 MtCO₂ annually, with additional indirect reductions. Performance varies widely by material and conditions, highlighting both its potential and practical challenges for scaling.

In-situ deep ocean monitoring reveals rapid kelp degradation limits marine biomass-based carbon sequestration potential and alters benthic ecosystems

Authors: Kohen W. Bauer, Paulo V. F. Correa, Alex Lupin, et al.

Synopsis: This study evaluates deep-sea sinking of kelp as a form of Carbon Dioxide Removal. A year-long experiment found over 90% of biomass decomposed within ~100 days, limiting long-term carbon storage. While some carbon may persist in dissolved forms, ecological impacts were significant, altering benthic communities. The findings highlight key trade-offs and the need for careful, site-specific monitoring.

Life cycle and techno-economic assessment of carbon-negative technologies: a comparative study of BECCS, DAC, mineralization, enhanced weathering, and biochar

Authors: Naif Ghazi Altoom

Synopsis: This study compares five Carbon Dioxide Removal pathways using a harmonized life cycle and techno-economic framework. By standardizing datasets and costs, it ranks biochar and BECCS as most cost-effective, while DAC remains expensive but flexible. Results highlight trade-offs in land, energy, and permanence, offering robust, uncertainty-informed guidance for policy, investment, and scalable CDR portfolio design.

Kinetic insights into measurable marine carbon dioxide removal via carbonation of electrolytically alkalinized seawater

Authors: Trinh Thao My Nguyen, Arnaud Boussonnie, Aaron Sabin, et al.

Synopsis: This study investigates electrolytic marine carbon removal using the Equatic process, a form of Marine Carbon Dioxide Removal. It compares direct and sequential carbonation approaches, finding both achieve high CO₂ removal efficiency (96–98%). Results highlight key kinetic processes and system design factors, such as gas flow rates and mineral reactions, critical for optimizing scalable mCDR systems.

Soil carbon sequestration exhibits differential mechanisms in two textured paddy soils under long-term green manuring

Authors: Siwei Shi, Danna Chang, Guopeng Zhou, Songjuan Gao, Ting Liang, Jun Nie, Jing Huang, Weidong Cao

Synopsis: This study examines how green manure–rice rotation enhances soil carbon storage through distinct pathways in different soil types. It shows increased yields and significant gains in Soil Organic Carbon, with sequestration driven by microbial processes and mineral interactions. Outcomes vary by clay content, highlighting texture-specific mechanisms that improve long-term carbon storage and agricultural productivity.

Global Nitrogen Deposition Promotes Carbon Sink Formation in Terrestrial Ecosystems

Authors: Lei Li, Mingyu Xie, Nan Jia, Li-Dong Mo, Qiang Yu, Fanjiang Zeng, Xiangyi Li

Synopsis: This study quantifies how nitrogen deposition contributes to the terrestrial carbon sink by analyzing retention of reduced (NHx) and oxidized (NOy) nitrogen. It finds about 36% of deposited nitrogen is retained, supporting an estimated Terrestrial Carbon Sink of 0.88 Pg C/yr—around 25% of the global total. Results highlight the importance of nitrogen dynamics and C:N stoichiometry in accurately modeling ecosystem carbon sequestration.

The Uncertain Policy Price of Scaling Direct Air Capture - Preprint

Authors: Leonardo Chiani, Pietro Andreoni, Laurent Drouet, Tobias Schmidt, Katrin Sievert, Bjerne Steffen, Massimo Tavoni

Synopsis: This study analyzes uncertainties in scaling Direct Air Capture with storage. It finds most scenarios show limited deployment, with only a small chance of gigaton-scale removal by mid-century. Achieving scale requires long-term subsidies exceeding $200–330/tCO₂ and major public investment, highlighting that strong climate policies are essential for DACCS to become a viable, large-scale solution.

A systematic comparison of calcium carbonate quantification techniques for the monitoring of carbon dioxide removal via lime carbonation direct air capture

Authors: Aimee Titche, Olivia Hawrot, Jack Shield, James S Campbell and Phil Renforth

Synopsis: This study evaluates methods for quantifying carbonate in Lime Carbonation Direct Air Capture, crucial for verifying atmospheric CO₂ removal. Five techniques—LOI, TGA, CAC-IR, volumetric calcimetry, and FTIR—were compared for accuracy, precision, throughput, and cost. LOI and CAC-IR performed best, with LOI favored when prioritizing accuracy and precision. The study highlights the need for standardized protocols to ensure reliable carbon accounting and credible carbon credit validation.

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WEB POSTS

There’s a New Place to Store Greenhouse Gases: In Your Beer (NY Times)

Carbon removal is now a strategic industrial asset (Counteract)

Microsoft spends billions on nascent carbon dioxide removal (E&E News by Politico)

Industry puts forth guidance on a ‘fishery sensitive’ approach to marine carbon dioxide removal (NF)

Communicating and regulating marine carbon dioxide removal (mCDR) (Open Access Government)

Beyond the Pledge: Geological Carbon Storage in NDC 3.0 and the Limits of Tracking International Pledges (Carbon Balance Initiative)

Exclusive: The Startup Trying to Salvage Carbon Removal Know-How Before It’s Lost Forever (Heatmap)

Implementing a fit-for-purpose approach for managing reversal risks (LinkedIn)

The Great Decoupling 2: Changes in Ocean Biochemistry Driven by Strengthening Stratification (Climate Uncensored)

Vaulted Deep Named No. 3 Most Innovative Company in North America by Fast Company (PR Newswire)

How Vycarb is scaling permanent carbon storage with HSBC Innovation Banking US (HSBC)

Carbon-Removal Credits Licensed by EU Get Nasdaq Backing (WSJ)

How to define decision criteria for carbon removal in law firms (LinkedIn)

Pilot project paves way to storing CO2 underground as minerals in arid countries (Nature)

Rockin’ farm fields suck up tons of CO2 (Science News Explores)

Startups juice carbon removal with power generation (Axios Pro)

Understanding the role of CLMS in carbon removal monitoring (Copernicus EU)

What 5,000 Unsold Credits Taught Us About the Carbon Market (Biochar Life)

Verde Resources Pursues Nasdaq Listing to Scale BioAsphalt™ and Strengthen Supply Chain Partnerships (Biochar Today)

Policy Paper: Defending net zero – a new role for CO2 removal (Zentrum Liberale Moderne)

Decarbonising the Steel Industry (NEG8 Carbon)

Capitalising on decarbonisation: how carbon mineralisation is making CCU profitable (Power Technology)

Carbon removal and AI (Everything and the Carbon Sink)

Merge Ahead: Biochar Applications and Superpollutant Mitigation (Climagination Substack)

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REPORTS

‎Current State of Biochar as a Carbon Dioxide Removal Solution - Status Report for Mission Innovation Countries and Beyond (Carbon Dioxide Removal Mission)

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THESES

Socio-technical imaginaries of BECCS in Sweden : climate mitigation and the role of the Swedish forest

Authors: Blasinski, Cora

Synopsis: This thesis explores how Bioenergy with Carbon Capture and Storage is imagined and legitimized in Sweden. It finds BECCS is framed through a socio-technical vision linking technology, markets, and consensus, positioning forests as both resource and sink. These narratives promote BECCS while sidelining alternative climate solutions, showing how imagined futures shape policy, investment, and the direction of mitigation strategies.

UPCOMING EVENTS

March 2026

MRV Database Webinar: Examining MRV practices across five OAE projects by Carbon to Sea | 31 March 2026 | Online

April 2026

C-SINK online workshop Afforestation | 01 April 2026 | Online

C-SINK online workshop Biochar | 01 April 2026 | Online

(NEW) How does enhanced weathering affect soil organic carbon, soil fertility, and greenhouse gas emissions? | 02 April 2026 | Department of Bioscience Engineering - University of Antwerp

CityCDR webinar: How to Build Carbon Sink Cities by City CDR Initiative | 07 April 2026 | Online

(NEW) No Net Zero without Nuclear - A Conversation with Zion Lights by Sebastian Manhart | 07 April 2026 | Online

(NEW) AgreenaCarbon Soil Carbon Project | 08 April 2026 | Online

(NEW) Isometric Standard 2.0: What it means for your project by Isometric | 14 April 2026 | Online

(NEW) CORE Carbon Removal Framework by Carbon180 | 14 April 2026 | Online

(NEW) Carbon Removal: The Solution Climate Neutrality Can’t Ignore by RIRC | 14 April 2026 | Padua, Veneto

Launch of Italy’s Carbon Removal Readiness Assessment Report by Carbon Gap | 20 April 2026 | Rome

(NEW) CDR Buyer’s Circle - SFCW Edition by CO280 | 21 April 2026 | San Francisco, California

(NEW) No Wasted Opportunities: Embedding Carbon Removal in the Management of Wastewater, Concrete and Mine Waste by Carbon Gap | 21 April 2026 | Brussels

(NEW) The Second Annual Climate Restoration Summit by EarthX and the Foundation for Climate Restoration (F4CR) | 21 April 2026 | Dallas, TX

Deep Sky: Eliminating Carbon – A New Frontier for the Climate Economy: Towards a sustainable future through green technologies | 21 April 2026

Embedding Carbon Removal in the Management of Wastewater, Concrete and Mine Waste by Carbon Gap | 21 April 2026 | Brussels

(NEW) CanCO2Re Webinar - CDR and Carbon Politics: The View from the Humanities | 23 April 2026 | Online

(NEW) Proposed Colorado Underground Injection Control Program Class VI Primacy Public Hearing by USEPA | 24 April 2026 | Online

(NEW) What’s Hot in Carbon Dioxide Removal – A Peek into the Future of Climate Tech by AirMiners | 28 April 2026 | Online

2026 Annual Convening by Carbon to Sea Initiative | 28-30 April 2026 | Halifax, Nova Scotia

May 2026

(NEW) Climeworks Summit 2026 | 04 May 2026 | Online | Zyrich Switzerland

Scaling CDR in the Global Hub for Finance, Policy, and Innovation by Carbon Unbound east coast | 19 & 20 May, 2026 | New York

(NEW) APACdr SUMMIT by Emerald Climate | 20 May 2026 | Singapore

10 International Symposium on Soil Organic Matter | 25-29 May 2026 | Brazil

Negative Emissions Summit 2026 | 04 June 2026 | Brussels

Scaling CDR Summit by Isometric | 23 June 2026 | London, England

23rd International Conference on Carbon Dioxide Utilization | 6-10 July 2026 | St.Louis, Missouri

Nordic Climate Finance Summit | 3-4 September 2026 | Oslo, Norway

CDR26–CDRANet’s 2026 conference on the future of carbon dioxide removal | 20-21 October 2026 | Vancouver

Carbon Removal Events Calendar

JOB OPPORTUNITIES

Senior Technoeconomic Analyst at Charm Industrial | Fort Lupton, CO

“Charm Industrial’s mission is to return the atmosphere to 280 ppm CO₂. We convert excess inedible biomass into carbon-rich bio-oil and inject it into underground storage for permanent carbon removal.”

Vertical Lead - Community at Alt Carbon | Darjeeling, West Bengal, India

“Alt Carbon is a deeptech science and data company, building agri-infrastructure for climate action. We aim to make South Asia a hub for Carbon Dioxide Removal (CDR) through technology pathways like Enhanced Rock Weathering and Biochar.”

Postdoc Fellowship: Carbonate Dissolution in Marine CDR at pHathom

“pHathom captures CO₂ from biomass power plants and converts it into stable dissolved carbon using limestone for durable storage in the ocean. Our process accelerates the natural weathering of limestone, using a water-based system that reacts flue gas CO2 with a slurry of seawater and crushed limestone to form bicarbonate, a stable form of carbon already abundant in the ocean.”

Biochemist at Carbon Drop | San Francisco Bay Area

“CarbonDrop is on a mission to tackle climate change at a truly impactful scale, with a goal to capture gigatons of CO2 per year at a cost orders of magnitude lower than current technologies.”

Construction Project Management Director at Capture6 | CA, US - Remote (within location)

“At Capture6, we are developing desalination and brine management solutions and creating environmental benefits to accelerate the transition to a decarbonized global economy.”

Commercial Project Manager at Greenlyte | Essen

“At Greenlyte, we are reshaping the global fuel economy with our novel, IP-protected, direct air capture to fuels technology, which shows superior economic potential compared to existing approaches, even reaching fossil prices.”

Executive Assistant to CEO at InPlanet | Brazil

“InPlanet is scaling Enhanced Rock Weathering (ERW) in tropical agriculture as a powerful method to remove carbon, regenerate soils, and transform the way food is grown in the tropics.”

Wastewater Process Engineer at Crew Carbon | Brooklyn, NY

“CREW’s technology and services make wastewater treatment cheaper and more efficient, while permanently sequestering CO₂.”

Geochemical Modeler / ERW at Zerox | München, Germany

“ZeroEx is scaling permanent carbon removal through enhanced rock weathering (ERW) projects in Germany, Brazil, and the United States.”

Sales Lead - Biochar at Alt Carbon | North Bengal + Telangana + Haryana

“Alt Carbon is a deeptech science and data company, building agri-infrastructure for climate action. We aim to make South Asia a hub for Carbon Dioxide Removal (CDR) through technology pathways like Enhanced Rock Weathering and Biochar.”

CDRjobs Board

PODCASTS

Agreena: Regenerative Agriculture, Data, and Carbon Markets | Climate Rising

“Simon Haldrup, founder and CEO of Agreena, joins Climate Rising to discuss how regenerative agriculture can scale beyond early adopters by focusing on farmer economics, data-driven decision-making, and flexible practice “toolboxes” rather than rigid labels. Based on Copenhagen, Agreena combines agriculture, finance and technology to work with 10,000 farmers across 20 countries. The conversation explores why adoption remains challenging despite long-term benefits, including thin margins, short planning horizons, and the risk of yield dips in the initial transition years. Simon also explains how Agreena uses satellite imagery, machine learning, and outcome-based verification to support both carbon credits and carbon insets, and how its two-sided platform aligns farmer incentives with corporate climate commitments. The episode closes with Simon’s perspective on the role of policy, finance, and technology in making regenerative agriculture the “new normal,” and advice for those interested in careers at the intersection of agriculture, climate, and systems thinking.”

Frank Rattey - Planeteers | Rooted in Change

“What if removing carbon fixed ocean acidification?

Global climate goals require massive amounts of carbon removal. Therefore, we need to find scalable, permanent solutions. Many efforts continue to rely solely on land-based technologies. Planeteers unlocks the planet’s largest natural carbon sink by enhancing the ocean’s ability to safely absorb and store CO2. By operating at the intersection of ocean science and entrepreneurship, Planeteers provides a vital carbon removal method that permanently locks away emissions while actively combating ocean acidification. Frank, Planeteers’ Founder and Managing Director, joins the podcast to talk about his decision to leave the corporate world, how the company plans to scale and what motivates him to keep going.”

Marta Sjögren, Paebbl on Scaling Carbon-Storing Materials Through Capital and Industrial Alignment | Euvoc

EUVC | The European VC

Marta Sjögren, Paebbl on Scaling Carbon-Storing Materials Through Capital and Industrial Alignment

Europe’s industrial growth is increasingly about execution and innovation in new materials. The competitivness question remains: what can be built, financed, and scaled in the real world…

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2 months ago

“Europe’s industrial growth is increasingly about execution and innovation in new materials. The competitivness question remains: what can be built, financed, and scaled in the real world.

Marta Sjögren, Co-Founder and Co-CEO of Paebbl, joins Carmel Rafaeli, Founding Partner at The Table, and our very own Andreas Munk Holm for a conversation that moves beyond climate ambition and into the mechanics of building industrial companies.

Paebbl has developed a process that takes captured CO₂ and converts it into a stable mineral, effectively locking carbon away while replacing emissions-intensive materials such as cement. It is a technically complex solution with a clear industrial application. But the real challenge is not only scientific. It is financial, operational, and systemic.”

What Will Happen to CORSIA & Carbon Dioxide Removal?—w/ Lev Gantly, partner at Philip Lee LLP | Reversing Climate Change

“Right now, the world’s climate policy architecture is under siege. The US has withdrawn from the Paris Agreement and UN Framework Convention on Climate Change (UNFCCC). Right-wing populism is rising across Europe. And Europe itself is torn between defending against geopolitical threats and sustaining the climate policies it has spent years building.

What happens to carbon removal in this environment? And what happens to CORSIA—The Carbon Offsetting and Reduction Scheme for International Aviation from within the International Civil Aviation Organization (ICAO)—when a key moment of judgment arrives this June?

Lev Gantly is a partner at Philip Lee LLP, a law firm specializing in carbon markets and climate law, and one of Reversing Climate Change’s sponsors. He advises a broad range of clients on emissions reduction and carbon dioxide removal projects, both through natural solutions like biochar and engineered technologies.

His deep understanding of international carbon markets, Article 6 of the Paris Agreement, and the evolving regulatory landscape makes him a critical voice on where climate policy is actually heading—and where it can actually survive political pressure.

Listen in to hear more about how CORSIA works and why it matters (or doesn’t matter so much?) for carbon removal. You’ll also learn about the specific moment this June when the EU must decide whether to keep the scheme or revert to its original plan to impose its own emissions trading system on international aviation.

Plus, where Lev is actually seeing durable policy support for carbon removal right now—and what it takes to make climate policy sticky enough to outlast a change in government.”

Frontier: The Private Bet on the Public Good - with Hannah Bebbington Valori | The CDR Policy Scoop

“In this episode of The CDR Policy Scoop, Sebastian Manhart and Eve Tamme are joined by Hannah Bebbington Valori, Head of Deployment at Frontier, the advanced market commitment backed by Stripe, Alphabet, Shopify, McKinsey, and Meta that has become one of the largest and most experienced buyers of carbon removal in the world.

The conversation opens with Frontier’s newly redesigned innovation program, which this year expands beyond pre-purchases to include R&D grants and more flexible check sizes. Hannah explains that roughly 60% of the R&D gaps Frontier identified at launch in 2022 have already been worked on or solved, a sign the field has matured enough to warrant a broader funding approach.

Much of the discussion centres on Frontier’s theory of change and the concept of the “baton pass”: The idea that voluntary corporate buyers exist to pull technology from lab to field and prepare a portfolio of proven solutions for governments to eventually take over. Hannah is direct that carbon removal is ultimately a public good requiring government-scale support, and that the voluntary market alone cannot get to gigatons. Sebastian and Eve push on how Frontier engages on policy across jurisdictions, how its buying criteria feed into legislative processes, and the tension between being “tech agnostic” in policy design and the practical pressure to fund what already works.

The episode also revisits Frontier’s 2024 fellows program, which placed individuals around the world to build demand for carbon removal through policy. Hannah gives an honest assessment: the Nordic Carbon Removal Alliance was a genuine win, but one year is a short runway for systems change, and policy moves slowly by design. The conversation closes on the question the whole sector is watching, what happens to Frontier after 2030, with Hannah confirming the team is actively working on it.”

Why carbon removal needs a new story | Carbon Curve Podcast

The Carbon Curve

Why carbon removal needs a new story

Episode 62 is with Robert Höglund (Head of Climate Strategy and CDR, Milky Wire; Co-Founder, CDR FYI; CEO, Marginal Carbon…

Listen now

2 months ago · 3 likes · Na’im Merchant

“In this episode, host Na’im Merchant catches up with Robert Höglund to discuss his latest thinking on the carbon removal sector’s trajectory. Robert makes the case that CDR needs a narrative shift away from speed and scale, toward prove and learn. They explore why aviation and shipping are largely ignoring carbon removal in their decarbonization plans, why voluntary demand may outpace compliance demand for the next decade or more, and why the sector should stop treating CDR as a last resort and start positioning it as a legitimate mitigation solution alongside everything else.”

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YOUTUBE VIDEOS

Defining “Fishery Sensitive” Marine Carbon Dioxide Removal | Fishery Friendly Climate Action

“Fishermen and their representatives have been working through the Fishery Friendly Climate Action Campaign in partnership with the Responsible Offshore Development Alliance (RODA) and three regional coastal/ocean acidification networks to define core principles of “fishery sensitive” marine carbon dioxide removal (mCDR). In this webinar, project partners described a set of 17 fishing industry roundtables that we held on this topic in 2025, and then shared RODA’s new “Guidance for Fishery-Sensitive mCDR” memo series, which was developed by the project partners based on fishermen’s input.”

Puro.earth x Exomad Green: Carbon Markets & Bolivia Visit | Exomad Green

“In this episode, Jan-Willem Bode, President of Puro.earth, and Diego Justiniano, CEO of Exomad Green, sit down to discuss the evolution of carbon markets and the growing role of carbon removals.”

The GigaTen Episode #16 March 2026 | Tree+

“Welcome to March and a tragic time of war. In this GigaTen we discuss how doing our daily work helps stay the good course and we survey some of the good news in the CDR sector.”

Sequestering the best outcomes for your carbon credits | Economist Impact Events

“Various carbon dioxide removal (CDR) technologies are available, but which one is cost-efficient, impactful, scalable, and less risky? What is the real value proposition? How do you build an impactful strategy for your climate targets? What shall the mix be between carbon credits and removals, permanent and less durable, depending on your company and industry?”

“Direct air capture is becoming a viable option” - Brineworks | gasworld

“Gudfinnur Sveinsson, CEO & Co-Founder at Brineworks spoke to gasworld following his presentation at its European CO2 Summit 2026 in Rotterdam.

Sveinsson discusses Brineworks direct air capture (DAC) technology and the role it can play in reducing the cost of the historically expensive innovation.

He also discusses the objectives of Brineworks, the next steps for the DAC industry and the necessity of e-fuels.”

RepAir Next Generation Electrochemical Technology | RepAir Carbon Capture

“Ultra-Efficient Electrochemical Carbon Capture RepAir’s solid-state electrochemical technology revolutionizes carbon capture through a single, continuous process. This breakthrough approach cuts energy consumption by 70% while operating entirely on electricity—no heat, liquids, or solvents required. The system produces 98–99% pure CO₂ ready for permanent storage or utilization and provides solutions for both point-source capture and direct air capture.”

AirMiners: OSCAR - The Open Standard Carbon Removal Agreement | AirMiners

“Join AirMiners for a deep dive into OSCAR (Open Standard Carbon Removal Agreement), the open-source legal framework designed to accelerate carbon removal transactions.

Contracts have been a major bottleneck in the carbon removal market — every deal requires custom negotiation, slowing adoption and increasing costs. OSCAR changes that by providing a free, standardized template that buyers and suppliers can use immediately.

In this 1-hour session, we’ll be joined by the team behind OSCAR to discuss:

⁠Why standardized contracts matter for scaling carbon dioxide removal •⁠ ⁠How OSCAR works and what’s included in the framework •⁠ ⁠Early adoption and real-world use cases •⁠ ⁠What this means for buyers, suppliers, and the broader carbon removal market.”

The Climate Goal No One Is Talking About | Foundation for Climate Restoration

“Cutting emissions won’t end the climate crisis. There’s already a trillion tons of CO₂ trapped in the atmosphere, and net-zero does nothing to remove it. This video explains what climate restoration is, why the science says it’s achievable by 2050, and how you can be part of the solution.

For hundreds of thousands of years, CO₂ never rose above 300 parts per million. Today it’s over 425 ppm. Even if every country hit its net-zero targets tomorrow, that legacy CO₂ keeps heating the planet. Climate restoration is the goal of actually removing it, returning to pre-industrial levels within our lifetime.

The Earth has done this before. Scientists have figured out how to replicate those natural processes at scale. What’s missing is public demand. That’s where you come in.”

Scrubbing the Skies: Biodiversity implications of land-intensive carbon dioxide removal | Institute for Responsible Carbon Removal

“Decarbonization scenarios heavily rely on land-intensive carbon dioxide removal (CDR) to achieve ambitious climate targets. While carefully designed CDR programs can effectuate sustainable carbon removal, and in some cases environmental co-benefits, large-scale CDR reliance could also pose a critical risk to biodiversity conservation in some regions. Analysing scenario-based land allocation patterns for CDR allows us to scrutinize potential deployment implications and to suggest ways to foster both carbon removal and biodiversity protection.”

Complexity Economics - Financial Market Volatility and Carbon Removal Governance | Instituto de Economia da Unicamp

“The seminar concludes by contrasting the mechanical metaphors of 19th-century economics with the Darwinian evolutionary science of the 21st century. Using the computer as a “microscope” for social complexity, the participants argue for a generative approach to economics where macro patterns emerge from the decentralized interactions of diverse, adaptive agents.Closing Insight: The transition toward complexity-based modeling is not merely a technical refinement but an ontological necessity for managing the existential challenges of the modern era.”

Risk, Responsibility, and the Path to Scale for Reforestation Carbon Credits | Stanford Woods Institute for the Environment

“Reforestation projects for carbon dioxide removal are deployable at scale today, yet investment remains constrained by risks both real and perceived.

New survey research from Stanford’s Sustainability Accelerator and Natural Climate Solutions Initiative reveals that while buyers and sellers could align on price in the $60-90/ton range, fragmented risk perceptions and a lack of consensus on who is responsible for mitigating key risks are blocking deals. In this webinar, we’ll present the key findings and host a panel discussion with Racheal Notto (Kita, a carbon market insurance company), Miguel Moraes (re.green, a reforestation project developer), and Julia Strong (Symbiosis Coalition, an advance market commitment for purchasing nature-based carbon removal) on what it will take to bridge these gaps. We’ll explore how mechanisms like clearer risk allocation frameworks, insurance products, and standardized offtake agreements could convert stated willingness to pay into realized transactions and unlock the next wave of reforestation investment.”

Working Group on carbon sequestration & GHG mitigation -role of restored floodplains as carbon sinks | MedWet - the Mediterranean Wetlands Initiative

“This session featured the results of a study to assess the role of restored floodplain grasslands as carbon sinks (considering CO₂ and CH₄), carried out in the Morava River, one of the pilot cases in the Horizon REWET project.”

CUR8 & Microsoft at Goals House in Davos: Deploying a Carbon Removal Playbook at Scale| CUR8 - Carbon Removals

“Carbon removal has crossed the threshold from what began as voluntary leadership now to commercial inevitability. We are now in a phase of pre-compliance: standards are crystallising, and the supply of high-integrity removals is tightening faster than most balance sheets are prepared for. For senior leaders, the choice is clear: secure credible terms now or face a later cost shock.

Hosted by CUR8 and Microsoft, this will convene the companies that are actively building the market they need to buy from. This discussion will explore the move from carbon removal pilots to portfolios, and how first movers are shaping supply, standards, and financing to their advantage. We will discuss Microsoft’s experience of building an industry leading portfolio to define a scalable playbook for the wider economy and how this market-building logic translates into practical strategies across sectors and balance sheets.”

‎Engineering Biochar for Carbon-Negative Concrete and Beyond | U Miami Civil and Architectural Engineering

Weekly Carbon Removal Updates from 23 March - 29 March 2026 | Carbon Removal Updates Bulletin

DEADLINES

ClimeFi opened Beyond 2030 RFP for 100k–500k t durable CDR | Submissions close: 08 April 2026

Watershed opened 2026 carbon removal RFP, inviting developers to supply credits for its network of 800+ global companies | Deadline: 10 April 2026

Isometric updated its Biochar Production and Storage Protocol | Public consultation open until 16 April 2026

Undaunted opened applications for CDR Accelerator Cohort 2 | Deadline: 19 April 2026

The Office of the United Nations High Commissioner for Human Rights has launched a call for input on climate-related technologies, including geoengineering (CDR & SRM), to assess their potential impacts on human rights | ‎Deadline: 30 April 2026

EU Commission launched consultations on post-2030 climate policy | Feedback due 04 May 2026

Government of Canada launched a call for bids to enable the federal departments to buy $10M CAD CDR credits from Canadian projects | Deadline: 11 May 2026

Call for Proposals: Sweden’s Energy Agency launched a $1B BECCS funding round for CO₂ capture from bioenergy | Deadline: 13 August 2026

Swedish Energy Agency opened 15M SEK funding for negative emissions R&D | Deadline: 31 August 2026

Carbon Management journal calls for CDR papers | Deadline: 13 November 2026

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TABLE OF CONTENTS

1. This Week’s Top CDR Highlights

2. Commercial News

3. Research Papers

4. Web Posts

5. Reports

6. Upcoming Events

7. Job Opportunities

8. Podcasts

9. YouTube Videos

10. Deadlines

THIS WEEK’S TOP CDR HIGHLIGHTS