CARBON REMOVAL WEEKLY SUMMARY (07 APRIL - 13 APRIL 2025)—WEEK#15
Links to recent scientific papers, web posts, upcoming events, job opportunities, podcasts, and event recordings, etc. on Carbon Dioxide Removal Technology
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
Note: Click on the headings listed in the table of contents above to easily navigate to the sections you're interested in.
THIS WEEK’S TOP CDR HIGHLIGHTS
CALL FOR CONSULTATIONS: Riverse has launched a public consultation on its new Enhanced Rock Weathering methodology, open for comments until May 5, 2025. A related webinar will be held on April 17, 2025.
CDR POLICY: The Foreign Pollution Fee Act of 2025, introduced by Sens. Cassidy and Graham, proposed carbon import fees based on emissions intensity relative to U.S. manufacturing standards. It recognizes carbon capture and carbon removal technologies, mainly DAC and mCDR, as valid mitigation strategies to reduce these fees.
PROJECT CANCELLATION: Planetary Technologies has cancelled its ocean-based mCDR project in Cornwall. The pilot aimed to boost alkalinity with magnesium hydroxide but was ended due to supply chain challenges and commercial unviability.
PARTNERSHIP: CO280 signed a landmark 3.69 million tonne agreement with Microsoft over 12 years to scale-up carbon dioxide removal in the US pulp and paper industry.
PROJECT: The EPA has issued Texas its first Class VI permits for CO₂ storage, approving Occidental's plan to inject captured CO₂ from its Stratos DAC facility into wells over 4,000 feet deep in the Permian Basin.
UPCOMING EVENT: On 21 May 2025, Ecologic Institute, on behalf of the Directorate-General for Climate Action of the European Commission, is organising a half-day workshop presenting perspectives on a purchasing programme for CRCF Permanent Carbon Removal Credits.
CDR POLICY: In Germany, a new coalition government agreement acknowledged that carbon removal will be necessary to achieve climate targets, allowing high-quality carbon removal projects to contribute up to 3% toward the 2040 climate goal.
Read on to unpack more updates:
COMMERCIAL NEWS
CO280 signed a landmark 3.69 million tonne agreement with Microsoft over 12 years to scale-up carbon dioxide removal in the us pulp and paper industry (PR Newswire)
Occidental and its subsidiary 1PointFive received the first-ever Class VI permits from EPA to store CO₂ from DAC in Texas (EE News)
XFuel secured €7.7M from the EU to scale its waste-to-fuel carbon removal tech for the transport sector (Ajot)
Orbital Materials and Civo have partnered to pilot Orbital’s carbon removal tech at Civo’s data center (Globe Newswire)
Verde Resources earned the first-ever Biochar Carbon Removal Credits from asphalt use, verified by Puro.earth (PR Newswire)
Patch signed a multi-million dollar deal with Varaha to scale durable CDR investments across Asia (Carbon Herald)
Green Carbon in collaboration with The Varhad Group and Nature Base Consulting launched a biochar project in India, aiming for 110,000 tons of CDR credits per plant over 15 years (Biochar Today)
EcoVadis has purchased carbon removal credits from Euthenia via Supercritical to support its climate goals (Biochar Today)
Climate Asset Management acquired 68,000 acres in Washington for a forestry CDR project to remove 1M+ tCO₂ over 10 years (ESG News)
1PointFive inked a 25-year agreement to sequester 2.3M tCO₂/yr from CF Industries’ upcoming low-carbon ammonia plant in Louisiana (Reuters)
Amsterdam-based Skytree secured investment from Division Q to scale its carbon removal and utilization technologies (Silicon Canals)
Farmblox and Eion Carbon are rolling out real-time carbon tracking on 10,000+ acres in Virginia, using soil sensors to monitor Enhanced Rock Weathering (Environment Energy Leader)
Alcom opened the Philippines’ first biochar + bio-oil CHP plant, aiming to remove 1M+ tCO₂ and create green jobs (Biochar Today)
Andriaki and Arbor Day Carbon partnered to plant 1M native trees in the Mississippi Valley, generating verified CDR credits (Street Insider)
RESERACH PAPERS
Effects of ocean alkalinity enhancement on plankton in the Equatorial Pacific
Guo, J. A., Strzepek, R. F., Yuan, Z., Swadling, K. M., Townsend, A. T., Achterberg, E. P., ... & Bach, L. T. (2025). Effects of ocean alkalinity enhancement on plankton in the Equatorial Pacific. Communications Earth & Environment, 6(1), 270.
Synopsis: Ocean alkalinity enhancement (OAE) could remove CO₂ at gigatonne scales, but its ecological impacts remain unclear. This study tested sodium hydroxide, olivine, and steel slag across 19 ship-based experiments in the Equatorial Pacific. Sodium hydroxide had minimal impact on phytoplankton and offered predictable alkalinity. Olivine disrupted key microbial groups with low alkalinity yield, while steel slag altered communities and promoted growth, offering higher alkalinity. These findings inform OAE material choices for marine deployment.
A techno-economic assessment of carbon dioxide removal pathways via biochemical conversion of lignocellulose to biofuels and bioplastics
Clauser, N., Scown, C. D., Pett-Ridge, J., & Sagues, W. J. (2025). A techno-economic assessment of carbon dioxide removal pathways via biochemical conversion of lignocellulose to biofuels and bioplastics. Renewable and Sustainable Energy Reviews, 216, 115714.
Synopsis: This study models various fermentation technologies for biomass carbon removal and storage (BiCRS), focusing on lignocellulosic feedstocks. It evaluates the levelized cost of CO2 removal (LCOCR) for products like renewable diesel, ethanol, sustainable aviation fuel (SAF), and polyethylene (PE). The study finds that PE production is a more efficient method of carbon removal (1.2–1.5 tCO2 per dry ton of biomass) compared to biofuels (0.3–0.9 tCO2). Costs for CO2 removal range from $60 to $675 per metric ton of CO2. Bioplastics prove to be 50–90% cheaper than biofuels for CO2 removal, suggesting they may be a cost-effective pathway for large-scale carbon mitigation.
Frameworks to assess climate change responses - A systematic analysis to enhance frameworks for Carbon Dioxide Removal
Gulde, F., Witting, M., Neuber, F., Baatz, C., & Garschagen, M. (2025). Frameworks to assess climate change responses-A systematic analysis to enhance frameworks for Carbon Dioxide Removal. Environmental Research Letters.
Synopsis: Meeting climate targets will require diverse CDR strategies, assessed through holistic and transparent frameworks. This study reviews existing assessment frameworks across climate responses, highlighting gaps in consistency, temporal dynamics, and integration of trade-offs. It calls for more robust, ethics-informed frameworks to guide CDR planning and policy, ensuring effective and well-rounded climate action.
Motivations and challenges for carbon dioxide removal development: empirical evidence from market practitioners
Dörpmund, F. (2025). Motivations and challenges for carbon dioxide removal development: empirical evidence from market practitioners. Environmental Research Letters.
Synopsis: CDR deployment is currently led by private organizations, not policy mandates. This study, based on 79 interviews with CDR suppliers, buyers, and investors, explores their motivations and challenges. Motivations include personal values and building a new industry, all rooted in CDR’s climate importance. Key challenges span tech, policy, finance, and coordination. The study highlights the vital, underexamined role of private actors in shaping CDR markets and suggests ways to support responsible scale-up.
Connecting Material Characteristics with System Properties for Membrane-Based Direct Air Capture (m-DAC) Using Process Operability and Inverse Design Approaches
Gama, V., Roy, D., Lima, F. V., & Sanyal, O. (2025). Connecting Material Characteristics with System Properties for Membrane-Based Direct Air Capture (m-DAC) Using Process Operability and Inverse Design Approaches. Industrial & Engineering Chemistry Research.
Synopsis: This paper models a two-stage membrane-based direct air capture (m-DAC) system, a promising negative emissions technology. Using facilitated transport membranes, which outperform traditional ones, the study links membrane properties—CO₂ diffusion and equilibrium constants—to outcomes like recovery, purity, and cost. Inverse design identifies required membrane traits for target goals. The work offers a roadmap for developing cost-effective, scalable m-DAC systems.
A holistic assessment framework for marine carbon dioxide removal options
Baatz, C., Tank, L., Bednarz, L. K., Boettcher, M., Morganti, T. M., Voget-Kleschin, L., ... & Rehder, G. (2025). A holistic assessment framework for marine carbon dioxide removal options. Environmental Research Letters.
Synopsis: Marine Carbon Dioxide Removal (mCDR) could be a key part of future CDR strategies, including methods like ocean alkalinity enhancement and blue carbon. This paper introduces a new assessment framework for mCDR that distinguishes between feasibility and desirability, clarifies evaluation criteria, and separates data from judgment. It offers policymakers and stakeholders a transparent tool to assess mCDR options and better understand their role in addressing climate change.
Enhanced vegetation productivity driven primarily by rate not duration of carbon uptake
Liu, Z., Ciais, P., Peñuelas, J., Xia, J., Zhou, S., Zhang, Y., & Fu, Y. H. (2025). Enhanced vegetation productivity driven primarily by rate not duration of carbon uptake. Nature Climate Change, 1-9.
Synopsis: Climate change is boosting both the length and rate of plant carbon uptake, increasing terrestrial gross primary productivity (GPP) by ~0.56% per year across the Northern Hemisphere. Satellite and carbon-flux data show that rising CO₂ and temperatures are driving a stronger daily carbon uptake rate (GPPrate), which accounts for ~65% of the GPP increase—more in early season (~83%) than late (~55%). These shifts highlight the key role of plant physiology and suggest growing seasonal imbalances under climate change.
The effect of model resolution on air-sea CO2 equilibration timescales
Xie, Y., Spence, P., Corney, S., Tyka, M. D., & Bach, L. T. (2025). The effect of model resolution on air-sea CO 2 equilibration timescales. Authorea Preprints.
Synopsis: Marine Carbon Dioxide Removal can aid in limiting warming below 2°C by creating a DIC deficit that draws in atmospheric CO₂. This study uses the ACCESS-OM2 model at varying resolutions to assess how ocean model resolution affects air-sea CO₂ equilibration timescales. Resolution has little impact in the tropics but matters more in polar regions. Results show model choice influences outcomes more than resolution alone. Novel visualization tools also enhance understanding of DIC deficits.
The North American Greenhouse Gas Budget: Emissions, Removals, and Integration for CO2, CH4, and N2O (2010–2019): Results From the Second REgional Carbon Cycle Assessment and Processes Study (RECCAP2)
Poulter, B., Murray‐Tortarolo, G., Hayes, D. J., Ciais, P., Andrew, R. M., Bastos, A., ... & Zhang, Z. (2025). The North American Greenhouse Gas Budget: Emissions, Removals, and Integration for CO2, CH4, and N2O (2010–2019): Results From the Second REgional Carbon Cycle Assessment and Processes Study (RECCAP2). Global Biogeochemical Cycles, 39(4), e2024GB008310.
Synopsis: Accurate accounting of greenhouse-gas emissions and removals is essential for tracking climate progress. The RECCAP2 study quantifies GHG emissions and removals for CO2, CH4, and N2O from 2010–2019 across various regions. For North America, reported GHG emissions were 7,270 TgCO2-eq yr−1, with discrepancies between methodologies (NGHGI, TD, BU). Differences were reconciled by adjusting for fluxes, emissions corrections, and definitions. The RECCAP2 framework aids in aligning GHG reporting methods and informs climate policy.
Effects of different urban vegetation cover and green space types on soil greenhouse gas emissions and carbon sequestration
Zhang, R., Cheng, X., Chen, W., Lu, F., Liu, S., Shi, H., ... & Shi, Y. Effects of different urban vegetation cover and green space types on soil greenhouse gas emissions and carbon sequestration. Frontiers in Environmental Science, 13, 1555628.
Synopsis: This study explores how vegetation type and green space category affect soil carbon sequestration and greenhouse gas emissions in urban environments. Across grassland, shrubs, and forest stands in parks, residential, and street green spaces, results showed that CO₂ flux and soil organic carbon (SOC) levels varied significantly. Shrubs and forests had lower CO₂ emissions but also lower SOC gains than grasslands. Parks outperformed residential and street areas in both emissions and SOC. Key influencing factors were WSOC, NH₄⁺-N, and pH.
Climate mitigation potential for targeted forestation after considering climate change, fires, and albedo
Liang, S., Ziegler, A. D., Reich, P. B., Zhu, K., Wang, D., Jiang, X., ... & Zeng, Z. (2025). Climate mitigation potential for targeted forestation after considering climate change, fires, and albedo. Science Advances, 11(15), eadn7915.
Synopsis: Using a coupled Earth system model, this study estimates that forestation efforts could mitigate 31.3–69.2 Pg C-equivalent globally from 2021–2100 under a sustainable scenario. Tropical regions show the highest potential, while mid- to high-latitudes are more variable. The study highlights the need to account for climate feedbacks, disturbances like fire, and surface albedo trade-offs. It calls for high-resolution, region-specific forestation plans that avoid sensitive ecosystems and land-use conflicts.
Marine ranching enhances ecosystem stability and biological carbon sequestration potential: Insights from Ecopath with Ecosim (EwE) model simulation of 30-year ecological path of a national marine ranching in China
Yan, J., Chen, Y., Cao, Y., Sun, J., Wen, B., Gao, X., ... & Pan, Z. Marine Ranching Enhances Ecosystem Stability and Biological Carbon Sequestration Potential: Insights from Ecopath with Ecosim (Ewe) Model Simulation of 30-Year Ecological Path of a National Marine Ranching in the Temperate Zone Of China.
Synopsis: This study examines the Haizhidu marine ranching system in the Bohai Sea, China, using Ecopath with Ecosim and stable isotope analysis to assess the system's biological structure, energy transfer, and carbon sequestration potential. Results show the highest biomass in sediment detritus and phytoplankton, with shellfish having a carbon sequestration potential of 12.44 t/km² at ecological carrying capacity (ECC). The system demonstrates increased stability and maturity with shellfish proliferation. This research highlights the role of marine ranching in enhancing carbon sequestration and ecosystem stability.
Superstructure optimisation of direct air capture integrated with synthetic natural gas production
Dolat, M., Keynejad, K., Duyar, M. S., & Short, M. (2025). Superstructure optimisation of direct air capture integrated with synthetic natural gas production. Applied Energy, 384, 125413.
Synopsis: This study compares two pathways for producing synthetic natural gas (SNG) via direct air capture (DAC): Dual-Function Material (DFM) technology and Temperature-Vacuum Swing Adsorption (TVSA) with Sabatier. For a 10,000 tCO2/year capture, DFM achieves a cost of $740/tCO2, similar to TVSA-Sabatier. DFM reduces equipment complexity and energy use but needs further research on kinetic modeling, adsorption performance, and catalyst improvements for commercial viability in sustainable carbon capture and utilization.
Reduced Erosion Augments Soil Carbon Storage Under Cover Crops
Huang, W., Jiang, L., Zhou, J., Kim, H. S., Xiao, J., & Luo, Y. (2025). Reduced Erosion Augments Soil Carbon Storage Under Cover Crops. Global change biology, 31(3), e70133.
Synopsis: Cover crops can increase soil organic carbon (SOC) storage and mitigate climate change by both boosting plant carbon inputs and reducing carbon losses via soil erosion (SOC erosion). A global analysis of 152 control and cover crop treatments found that cover crops reduced SOC erosion by 68% and increased SOC stock by 14%. The reduction in SOC erosion, mainly influenced by topographic slope, was most effective in temperate regions. These results suggest that cover crops can provide significant carbon benefits, especially in sloping croplands.
The co-benefits of integrating carbon dioxide removal in the energy system: A review from the prism of natural climate solutions
Chlela, S., & Selosse, S. (2025). The co-benefits of integrating carbon dioxide removal in the energy system: A review from the prism of natural climate solutions. Science of The Total Environment, 976, 179271.
Synopsis: This review explores how CDR methods, particularly Natural Climate Solutions (NCS), can be integrated into the energy system to mitigate climate change. NCS, through processes like BECCS, provides negative emissions and offers additional ecosystem benefits such as improved biodiversity and agricultural productivity. The review compares various CDR methods, highlights their impact on ecosystems and energy systems, and addresses challenges like land-use constraints and sustainability for maximizing their effectiveness in achieving climate goals.
Organic carbon sequestration in global croplands: evidenced through a bibliometric approach
Abrar, M. M., Waqas, M. A., Mehmood, K., Fan, R., Memon, M. S., Khan, M. A., ... & Du, J. (2025). Organic carbon sequestration in global croplands: evidenced through a bibliometric approach. Frontiers in Environmental Science, 13, 1495991.
Synopsis: This bibliometric study reviews cropland soil organic carbon (SOC) sequestration research from 2012 to 2022. It reveals that the U.S. and China dominate the field, with journals like Soil Biology and Biochemistry leading. Recent research focuses on "climate change mitigation," "soil health," and "soil aggregation." Key insights include the role of microbes in stabilizing SOC. The study emphasizes the importance of management practices for increasing carbon sequestration, improving soil health, and supporting Sustainable Development Goals.
Agricultural activities increased soil organic carbon in Shiyang River Basin, a typical inland river basin in China
Wang, Q., Xu, Y., Zhu, G., Lu, S., Qiu, D., Jiao, Y., ... & Li, W. (2025). Agricultural activities increased soil organic carbon in Shiyang River Basin, a typical inland river basin in China. Scientific Reports, 15(1), 11727.
Synopsis: This study investigates the impact of agricultural practices on soil organic carbon (SOC) in the Shiyang River basin, focusing on upstream (mountainous), midstream (oasis), and downstream (marginal oasis) farmland. Findings show that SOC content is higher in the upper and middle reaches, and core oasis farmland, compared to the lower reaches and marginal areas. Farmland has higher SOC than woodland and grassland, with agricultural practices increasing SOC, while land abandonment reduces it. The research provides insights into agriculture's role in carbon cycling in arid oasis regions.
WEB POSTS
Louisiana lawmkers push for additional regulations on geological CO2 sequestration (Carbon Pulse)
The Openair Collective announced 5 finalists for the 2025 Carbon Removal Challenge, including teams from Stanford, Berkeley, Purdue, and EPFL (OpenAir Collective)
IMO approves net-zero regulations for global shipping (IMO)
Deep Sky set to launch carbon removal operations in Alberta town this summer (Futz Hugh)
Sweden's forests way short of meeting EU carbon storage targets (Sveriges Radio)
Carbon removal buyer seeks to scale, diversify purchases in 2025 (Carbon Pulse)
Planting more forests comes with ‘high upfront costs’ many landowners can’t afford (AFN)
Scaling ERW among Global South Farms Requires Careful-Building - Developer (Carbon Pulse)
Making Carbon Removal Antifragile (Inevitable & Obvious)
How are global tariff risks and realities affecting the biochar industry? (Biochar Today)
The new renewable revolution: Why carbon dioxide removal will transform the carbon market (World Economic Forum)
U.S. Bill Proposes Carbon Fees On Imports, CO2 Capture And Removal Considered As Mitigators (Carbon Herald)
Top 4 Carbon Removal Stocks Set to Suck Up and Cash In (Carbon Credits)
Enhanced Weathering – Weathering stones help the climate (Handelsblatt)
Dumping Biomass in the Ocean Is Not a Climate Solution (Project Syndicate)
Carbon Direct Welcomes Rory Jacobson as Head of Policy Following Distinguished Service at Department of Energy (Business Wire)
VCM Commentary: Biochar deals booked; Peru REDD+ moves up (Quantum Commodity Intelligence)
Planetary Technologies Cancels Its mCDR Project In Cornwall (Carbon Herald)
Why Microsoft is buying carbon credits from a pulp and paper mill (Trellis)
Is federal oversight needed for carbon dioxide pipeline development? (Illuminem)
UN passes levy on ships, defying US threats (Financial Times)
Oceans as climate change allies (C&en)
Incentivizing geostorage for carbon removal with Kim Vinet (Climate Tech Canada)
German coalition agreement includes carbon removal as key climate strategy element (Ceezer)
The Nature Conservancy - CDR Enabler Interview (Unbound)
Brazilian project developer receives $17 mln backing from banks via national climate fund (Carbon Pulse)
Innovative CO₂ removal monitoring device earns student team $10K top prize (University of Hawaii)
Illinois Senate Unanimously Bans Carbon Sequestration Near Mahomet Aquifer (Carbon Herald)
Arbonics new survey found strong landowner interest in afforestation for CDR, but a need for better support and incentives (Carbon Herald)
REPORTS
2024 Annual Report (Spark Climate Solutions)
A look at Terraset’s 2024 Annual Report (Terraset)
Scaling Industrial Carbon Dioxide Removal: Policy Options for a Short-Term Strategy (SWP)
Biochar's long game: Unraveling the science of carbon permanence (Carbon Direct)
Carbon Dioxide Removal Technologies—An overview of the different methods for capturing and storing carbon dioxide from the atmosphere (IATA)
UPCOMING EVENTS
This is CDR: Tropical Scale, Global Impact - NetZero’s Bold Biochar Vision for Brazil by OpenAir Collective | 15 April 2025 | Online
Nellie Show & Tell. A Carbon Dioxide Removal Discovery Day by Nellie Technologies | 16 April 2025 | United Kingdom
Biochar Public Consultation by Puro.earth | 16 April 2025 | Online
(NEW) Carbon Dioxide Removal: Simulating Climate Futures in En-ROADS | 17 April 2025 | Online
(NEW) Public Consultation - Riverse ERW Methodology by Riverse, Erica Dorr & Clement Georget | 17 April 2025 | Online
An Exclusive Carbon Removal Reception at SF Climate Week by Leila Toplic & Carbon Business Council | 21 April 2025 | California
(NEW) What, How, and Why of High-integrity Carbon Credits by CNaught & 3 others | 21 April 2025 | San Francisco, California
Overcoming the Hurdles: Making Carbon Removal Affordable, Understandable, and Scalable for Midsize Buyers by Eliza Erskine, Angela Tseng & SF Climate Week | 22 April 2025 | California
Global Biochar Exchange 2025 | 22-25 April 2025 | Japan
Carbon Removals Drinks by ClimateImpact Calendar | 22 April 2025 | California
(NEW) How understanding carbon removal positions you to be a better CSO by Eliza Erskine & 6 others | 22 April 2025 | San Francisco, California
(NEW) Protecting Forests & Scaling Climate Impact by Sophie Westover, SF Climate Week | 23 April 2025 | San Francisco, California
Noya presents: A DAC Demo Site Tour by Hiro, josh santos & SF Climate Week | 23 April 2025 | California
Assessing the Feasibility for Large-Scale DACCS Deployment in the UK by City Science | 23 April 2025 | Online
Scaling Demand & Corporate Action: A San Francisco Climate Week CDR Breakfast by Puro.earth | 23 April 2025 | San Francisco
(NEW) Oxford Net Zero and Workday on carbon removals & tour of Charm Industrial's carbon removal technology by Charm Tours | 24 April 2025 | San Francisco, California
First Annual Climate Restoration Summit at the 2025 EarthX Congress of Conferences | 24 April 2025 | Dallas, Texas
(NEW) Removing ‘analysis pyrolysis’ in biochar projects | 24 April 2025 | Online
Carbon Removal explained by Pinwheel | 24 April 2025 | Online
Carbon Removal Through Improved Forest Management: The Benefits of IFM by Forliance | 24 April 2025 | Online
(NEW) Biochar's Potential in Carbon Markets by Australia New Zealand Biochar Industry Group (ANZBIG) | 24 April 2025 | Online
(NEW) Mobilization Workshop: The NY Carbon Farming Act by OpenAir | 24 April 2025 | Online
Carbon Newbie Summit at SF Climate Week 2025 by Carbon Newbie Summit | 25 April 2025 | California
(NEW) European Carbon Removal Policy in 2025: The Trailblazers Moving CDR Forward by Carbonfuture | 29 April 2025 | Online
Carbon Catalyst by the Pembina Institute's CDR Centre | 30 April 2025 | Calgary
DC Climate Week | 28 April – 02 May 2025 | Washington, D.C.
Bio-CO2 Use and Removal 2025 | 06 May 2025 | Helsinki, Finland
GGR Insights: Critical factors in financing GGR technologies from 2026 onwards | 07 May 2025 | Online
Workshop on Nature-Based Solutions for Carbon Dioxide Removal by CSink | 07 May 2025 | In-Person (Spain) & Online
APAC CDR Summit 2025 by Puro Earth & Carbon Business Council | 07 May 2025 | Singapore
(NEW) Carbon Management Americas Conference | 13-15 May 2025 | Denver, Colorado
UPTAKE webinar series on CDR | 14 May 2025 | Online
Direct Air Capture Conference by Energy Conference Network | 15 May 2025 | Louisiana
Bio-Char IV Conference | May 18-23, 2025 | Santa Marta, Colombia
The Global Business Summit Accelerating Gigaton-Scale CDR by Carbon Unbound | 20 & 21 May 2025 | New York
(NEW) Workshop: Perspectives on a Purchasing Programme for CRCF Permanent Carbon Removal Credits by EU | 21 May 2025 | Online
Carbon Removal Investment Summit 2025—Modelling-Driven Insights and Outlook by cCarbon | 03 June 2025 | London, UK
ERW25: Terrestrial and marine carbon dioxide removal by enhanced rock weathering by University of Antwerp | 3-5 June 2025 | Belgium
Carbon Clean-up Camp | 25 June 2025
LAC Soil Carbon 2025 | 25-28 June 2025 | Reo de Janeiro (Brazil)
2nd Advancing Marine CDR Summit | 08 July 2025 | Boston
5th Brazilian Congress of Remineralizers Conference | 8-11 July 2025 | Brazil
2025 Carbon Removal Justice Fellows Program by The National Wildlife Federation (“NWF”) and the Institute for Responsible Carbon Removal (“the Institute”) at American University | 14-25 July 2025
The UK GGR Event by CO2RE Hub | 29 September - 01 October 2025 | United Kingdom
alt futures—India's Carbon Removal Summit by Alt Carbon | 05 October 2025 | Bengaluru, India
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JOB OPPORTUNITIES
Project Developer at Hourglass Climate | Remote
"The ocean is vital for removing hard-to-abate and legacy emissions. Ocean Alkalinity Enhancement offers gigatonne-scale, permanent carbon removal. Hourglass Climate unites scientists to rapidly de-risk and advance safe, effective OAE through targeted research."
Global Head of CDR Carbon Credit Sales at Emral Carbon
"Emral Carbon is a leading provider of expert brokerage, capital raising and legal services in relation to carbon markets and carbon dioxide removal."
Research Internship at Carbon Gap
“Carbon Gap is an independent, Brussels and UK-based non-profit organisation supporting Europe’s unique opportunity to lead the responsible deployment of carbon dioxide removal (CDR) to fight climate change through independent and science-led advice.”
Senior Plant Operator at Climate Engineering | Squamish, BC, Canada
"Carbon Engineering is a team of innovators from around the globe with a shared mission and commitment of advancing large-scale Direct Air Capture technology."
Demand Planner at Climeworks | Zurich, Switzerland
"Climeworks is a leading high-quality carbon removal provider, combining decades of expertise in Direct Air Capture technology with a holistic approach to carbon removal solutions."
Life Cycle Analysis Lead at InPlanet | Brazil
"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. We are working with Enhanced Rock Weathering in tropical agriculture, focusing on Brazil."
Senior Data Engineer at Carbonfuture | Freiburg/ remote EU
"Carbonfuture is the Trust Infrastructure for durable carbon removal."
Molecular Biologist at CyanoCapture | Oxford, United Kingdom
"CyanoCapture is using the world’s fastest photosynthetic microbe to capture CO2 from emission sites. The core technology uses photobioreactors to transform CO2 into biomass and high value recombinant proteins and value-added chemicals."
Head of Marketing at DeepSky | Toronto / Remote
"Deep Sky is building Canada’s first gigaton-scale carbon removal company. We develop and deploy large-scale Direct Air Capture infrastructure to permanently remove carbon dioxide from the atmosphere."
Business Development Lead at Cella Minerals | New York City or Houston
"Cella is a venture-backed climate tech company developing in-situ CO₂ mineralization projects to deliver safe, permanent carbon removal at gigaton scale."
CDR Research Associate at 350Solutions
"350Solutions is a consulting group that provides independent evaluation of new environmental and cleantech innovations and independent verification of carbon removal and utilization projects and credits."
R&D Lab Technician at Captura | Pasadena, CA
"By studying the planet’s natural cycles, Captura designed a solution that removes CO2 from the ocean and harnesses its ability to heal the climate—a process known as Direct Ocean Capture."
Director of Agricultural Markets at US Biochar Initiative | United States
"US Biochar Initiative is a not-for-profit organization promoting the sustainable production and use of biochar through research, policy, technology and implementation."
Head of Product Marketing at CO280 | West Coast, USA
"CO280 is a leading developer of large-scale carbon removal projects that will remove more than 10 megatons of carbon per year from the atmosphere."
Looking for your dream job in CDR? There are 709 jobs available *right now*: check them all out at:
PODCASTS
Water alternating gas injection - Nelson (&dog) | Reviewer 2 does geoengineering
"Claire Nelson, founder of Cella mineral storage, explains how underground injections of water alternating with CO2 might aid mineralsation. Paper: Water-alternating-gas injections for optimized mineral carbon storage in basalt https://www.sciencedirect.com/science/article/abs/pii/S1750583624002263 Poppin' Fresh, more widely known as the Pillsbury Doughboy, is also, rather randomly, discussed https://en.wikipedia.org/wiki/Pillsbury_Doughboy"
SHOWDOWN: Biochar vs Direct Air Capture | The CDR Policy Scoop
"A fun, interactive, first-of-a-kind live debate with over 1000 attendees signed up.
We picked two real heavyweights: DAC, the poster-child of CDR, with over 200 DAC companies founded to date. On the other hand, biochar, responsible for a whopping 84% of all durable CDR deliveries to date.
In the DAC corner: Martin Freimüller is the Co-Founder and CEO of Octavia Carbon – the first DAC company in the Global South and fifth largest in the world. He moved his life to Kenya in 2021, upon realising it's the world's best place for DAC.
In the Biochar corner: Sebastian Manhart is Senior Policy Advisor at Carbonfuture and a Board Member of the International Biochar Initiative. Few post as much about biochar as Sebastian.
Moderated by the CDR Policy Scoop co-host Eve Tamme to keep it punchy (not literally), informative, and entertaining."
The Role of Rocks in Carbon Sequestration with Eion | Earthlings
"In this episode of Earthlings 2.0, we sit down with Anastasia Pavlovic Hans, CEO of Eion, to explore enhanced rock weathering (ERW) — an innovative carbon removal technology that leverages minerals to pull CO2 from the atmosphere. Anastasia discusses how ERW integrates seamlessly into agriculture, its long-term effectiveness, and the financial incentives driving farmer adoption. She also shares her journey into climate tech and why collaboration between farmers and technology developers is essential for scaling sustainable solutions."
"We'll see an influx of corporate demand for CDR," Victoria Harvey, ClimeFi | Carbonsations
"For this episode, we're joined by Victoria Harvey, CDR Strategy Lead at ClimeFi, one of the world's leading global portfolio manager for permanent carbon removal (CDR) assets. Victoria touches on the company's approach to transparency and risk management, and walks us through how their novel Analyst Rating can help make the VCM more accessible to buyers."
Where are we in the CDR story and where are we going? | The Carbon Removal Show | Negative Emissions, Net Zero, Climate Positive
"In this episode:
Where are we now? Durable CDR purchases hit 8 million tonnes in 2024 (a 78% bump from 2023), but 64% of that was Microsoft flexing. Deliveries? Still catching up – and most of it’s biochar.
Caveats, ahoy: Sales are booming, but actual removals are still lagging. The buyer pool is basically a tech giant party.
Bubble watch: Are we living in a beautifully optimistic carbon bubble? Is it about to pop? Will Tom’s optimism hat survive the bubble bath? We explore industry hype vs. hard truths, including the risks of undelivered credits and startup casualties.
The vibe check: Emily’s on an emotional rollercoaster. Tom is backing the CDR horse. Ben’s beard is greyer. Collectively, we’re cautiously hopeful.
What needs to happen?: Scaling isn’t just tech - it’s finance, policy, public understanding, and clear comms. We need to get the message out of the bubble and into the next layer of the onion. (Just… not into Emily’s bubble bath. Please.)"
Episode #5 with Robert Palmer from Tera | Bialek Group's Podcast
"This episode features a powerful conversation with Robert Palmer, CEO of Tera, as we explore the intersection of emerging technologies, sustainable agriculture in East Africa, and the evolving landscape of carbon removal.
From soil regeneration to carbon markets, Robert shares practical insights and bold ideas on how innovation is shaping the future of climate resilience — and why Africa may be leading the way."
Satellites, soil & forest carbon with Arbonics | Shaken Not Burned
"Over the last couple of years forest carbon credits have become an increasingly contentious solution to the climate challenge because of questions around additionality, permanence and leakage.
Scandals have emerged over how carbon credits are estimated and assessed, much of which stems from outdated or flawed methodologies. The risk of greenwashing is a core concern, that credits have been used by companies to appear climate-friendly without delivering real impact.
With advancing technology, stronger regulation and the introduction of dynamic baselines however, nature-based solutions like forest conservation and reforestation are critical to the capture and storage of CO2 in natural ecosystems. The market is evolving quickly, offering significant opportunities as it matures.
In this episode, Felicia Jackson sits down with Lisett Luik, co-founder of Arbonics, to dive into the challenges and potential of nature-based carbon removal, from using satellite data and LiDAR to build a “digital twin” of forests, to navigating the complexities of carbon markets, trust, and transparency.
The conversation also explores how companies like Microsoft are evolving their carbon removal strategies, highlighting the spectrum of approaches available—from avoidance and forest conservation to cutting-edge technological removals. It examines what makes forest carbon credits either valuable or controversial, and emphasizes the essential role nature-based solutions will play over the next 30 to 50 years, even if their impacts aren't always permanent."
YOUTUBE VIDEOS
This is CDR: Carbon Removal's Wrong Turn? A conversation with Paul Gambill | OpenAir
'In March 17th, Paul Gambill—co-founder of Nori—published a provocative thought piece on his Substack titled Carbon Removal’s Wrong Turn: How Market Design Created Today's Scaling Crisis. The essay has since sparked spirited discussion across the carbon removal ecosystem, raising tough questions about how current market structures may be fundamentally misaligned with the goal of gigatonne-scale climate impact. In this session, we sit down with Paul to unpack the core ideas in the piece—why legacy offset frameworks, permanence-first procurement, and precision-obsessed verification may be creating more barriers than benefits—and explore the responses the article has generated in the weeks since. What would a market look like if it were designed first and foremost for atmospheric impact? And what will it take to get there? Whether you're working in project development, policy, investing, or just thinking critically about the future of carbon removal, this conversation is not to be missed."
Myles Gray: Opportunities and Challenges for the Future of Biochar | Biochar Today
"In this episode of The Biochar Show, host Meghan K. Lees ( / meghanklees ) interviews Myles Gray, Executive Director of the United States Biochar Initiative (USBI). They discuss the transformative potential of biochar in environmental sustainability, the current state of the biochar industry, and the various applications and markets for biochar. Myles shares his journey into the biochar field, USBI's priorities for market development, and the importance of policy changes to accelerate biochar adoption. The conversation also touches on overcoming misconceptions about biochar, the future of the industry, and advice for entrepreneurs looking to enter the biochar market."
Marine Permaculture: A Scalable Solution for Climate Resilience and Food Security | Healthy Climate Initiative
"Dr. Brian von Herzen is a visionary leader and Hertz and Edmund Hillary Fellow. With expertise spanning planetary science, computer science, and ecosystem restoration, he pioneers scalable, nature-based solutions to combat climate change, restore ocean health, and bolster biodiversity. A leader in Marine Permaculture, he has regenerated vast kelp forests and marine ecosystems. Dr. von Herzen holds degrees from Princeton and Caltech, driving his mission to advance food security, carbon sequestration, and a sustainable global future."
Is the Future of Carbon Removal in the Air? | Meet the Finalists | XPRIZE Carbon Removal | XPRIZE
"Episode 3 of the XPRIZE Carbon Removal docuseries explores effective solutions that are pulling carbon dioxide directly from the atmosphere.
Meet the finalists pioneering these high quality solutions:
Airhive: Airhive’s DAC technology employs fluidized-bed reactors to provide rapid CO2 removal via their low-cost, non-toxic metal-oxide-based sorbent.
Heirloom+ CarbonCure: Heirloom uses limestone in a cyclic process to capture CO2 directly from the air. Heirloom’s technology accelerates a natural weathering process, reducing the time it takes to absorb CO2 from years to less than three days. Heirloom works with CarbonCure to inject and mineralize the CO2 captured at their demonstration site into concrete.
Octavia and Cella: Octavia designs, builds, and deploys highly modular machines that capture CO2 directly from the atmosphere using DAC technology. Cella, a CO2 storage provider, is developing in-situ mineralization technology for permanent carbon removal.Project Hajar (44.01 + Aircapture): Aircapture is deploying its state-of-the-art modular DAC technology on 44.01’s site. Here, 44.01 takes the captured CO2 and turns it into rock underground, using its pioneering technology that accelerates the natural process of CO2 mineralization.
Skyrenu: Skyrenu combines an efficient and low-cost DAC system with a rock carbonation process to treat mine tailings in order to lock away carbon forever.
These teams are advancing direct air capture (DAC) and sequestration technologies that harness the power of mineral and chemical sorbents to pull CO2 from the air to store it permanently in minerals and deep underground. Learn more in this episode of our XPRIZE Carbon Removal docuseries."
SBTi Draft Corporate Net-Zero Standard V2 Public Consultation: Live Q&A | Science Based Targets initiative
'We are updating the Corporate Net-Zero Standard to support more companies to set targets and make corporate climate action more effective, to accelerate the pace of decarbonization.'
Seawater Electrodeposition of Carbon-Trapping Minerals | Remove and Reflect Podcast
"In this episode, Mr. Sun (AI-generated) and Ms. Remove (AI-generated) discuss a recent research that investigates a method for sustainably producing carbon-trapping minerals from seawater using electrodeposition combined with carbon dioxide injection. The study systematically examines how varying electrochemical conditions and CO2 flow rates influence the yield, composition, and structure of precipitated minerals like calcium carbonate and magnesium hydroxide. The findings reveal optimal parameters for maximizing mineral production and carbon sequestration, highlighting the potential to create valuable materials for construction and environmental applications. Furthermore, the research demonstrates the feasibility of growing these minerals into larger aggregates with controllable properties, which can be further enhanced through carbonation. Ultimately, this work positions seawater electrolysis as a versatile approach for not only hydrogen production and carbon capture but also for the sustainable synthesis of useful mineral resources."
Scaling Enhanced Rock Weathering while Building Resilience for Farmers | Institute for Responsible Carbon Removal
"The series focuses on scientific, technological, legal, political, and justice-focused issues associated with carbon dioxide removal, and is hosted by the Institute’s Co-Director Wil Burns.
Enhanced Rock Weathering (ERW) has emerged as a promising nature-based solution for carbon removal, but its scalability and impact on smallholder farmers in the Global South remain underexplored. Mati Carbon is pioneering large-scale ERW deployments in smallholder farmers' fields across India, Zambia, and Tanzania, enabling durable carbon dioxide removal while simultaneously improving soil health and boosting agricultural productivity.
This webinar will delve into the science behind ERW, its co-benefits for farmers, and how Mati’s robust MRV (Monitoring, Reporting, and Verification) system ensures high-integrity carbon credits. Join us as Shantanu Agarwal, CEO of Mati Carbon, shares insights from his experience of scaling Mati to over 100,000 tons of basalt dust deployed across 10,000+ acres, the challenges faced in implementation, and the path to scaling ERW globally.
Mati Carbon is an XPRIZE Carbon Removal finalist and a Frontier and Milkywire portfolio member leading the way in scientifically robust, high-integrity carbon removal. Mati has also delivered more than 1600 tons of CDR to its buyers, the largest of any ERW company from the global south."
Marine Climate Interventions: Governance Preparedness and Practitioner Consensus | Remove and Reflect Podcast
"In this episode Mr. Sun (AI-generated) and Ms. Remove (AI-generated) discuss a new paper that examines the burgeoning field of marine-climate interventions designed to counteract ocean warming and its effects. Through a survey of practitioners, the study identifies various intervention types and their global distribution, revealing a dominant focus on ecosystem adaptation over mitigation or societal resilience. A key finding is the significant "pacing problem," where the rapid development and deployment of these novel technologies outstrip the preparedness of governance frameworks to manage associated ecological, social, and cultural risks. The authors highlight a lack of consensus on climate goals, limited involvement of public institutions and communities, and inconsistent application of responsible governance arrangements, underscoring the urgent need for more robust oversight and inclusive decision-making to ensure these interventions are effective and equitable."
Invest in Carbon Removals Neustark investment case | Negative Emissions Platform
"Explore the investment case for carbon dioxide removal technologies with leading industry voices. The "Invest in Carbon Removals" roadshow connects investors with breakthrough CDR ventures, market insights, and policy intelligence, featuring emerging and scalable business models that are gearing up to deliver both economic and climate returns."
Weekly Carbon Removal Updates from 07 April - 13 April 2025 | Carbon Removal Updates Bulletin
DEADLINES
Call for Consultations—Puro.earth opened consultation on biochar methodology updates | Deadline: 24 April
The Swiss Federal Office of Energy has earmarked 100 million Swiss francs for CDR, CCS and storage projects under the new Climate and Innovation Act | Pre-proposal deadline: April 25, 2025
Isometric released the first-ever River Alkalinity Enhancement Protocol for public consultation—outlining the requirements for high-quality CDR via rivers | Deadline to provide comments: 26 April 2025
Funding Opportunity—Call for Carbon Dioxide Removal Innovation by B.C CICE | Application Deadline: 30 April 2025
Call for Proposals—Tencent launched global CarbonX program 2.0 to accelerate climate tech innovation including CDR | Application Deadline: May 2025
(NEW) Call for Consultations-Riverse launched public consultation on its new ERW methodology | Deadline to provide comments: 05 May 2025
The Science Based Targets Initiative released a draft of the Corporate Net-Zero Standard V2 for public consultation, outlining options for companies to integrate CDR into their net-zero strategies—applicable only to scope 1 emissions | Deadline to provide response: 01 June 2025
Puro.earth is revising its Enhanced Rock Weathering methodology, with a public consultation ending in June 2025
Student Writing Competition: Marine Carbon Dioxide Removal Law and Policy | Submissions are due by 15 June 2025
Call for Manuscripts—Soil microbiome in carbon sequestration | Submission deadline: 29 October 2025
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