CARBON REMOVAL WEEKLY SUMMARY (21 JULY - 27 JULY 2025)—WEEK#30
Links to recent scientific papers, web posts, upcoming events, job opportunities, podcasts, and event recordings, etc. on Carbon Dioxide Removal Technology
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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
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
CDR MARKET UPDATE: CDR.fyi’s Q2 2025 Durable CDR Market Update reports a record 15.48 million tonnes of carbon removals sold, exceeding all previous quarters combined. Microsoft accounted for 14.5 million tonnes through five large offtake deals, while other buyers added 902,000 tonnes, marking the second-highest non-Microsoft total.
UK INTEGRATES GGRs IN ETS: The UK government confirmed its plans to integrate Greenhouse Gas Removals into the UK Emissions Trading Scheme (UK ETS) by 2029, with legislation introduced in 2028. Key aspects of this integration include the introduction of UK Removal Allowances, ex-post issuance, a 200-year permanence threshold, and the use of auctions to expand market access.
CALL FOR PROPOSALS: The Wren Climate Collective is offering a $100,000 grant to an early-stage carbon removal company. Proposals are due by August 11, 2025, with funding to be awarded in early 2026.
REPORT: New analysis of data from WRI’s Global Forest Watch and Land & Carbon Lab revealed that extreme fires caused forests to absorb far less carbon than usual in 2023 and 2024, weakening their cooling effect. During those years, forests absorbed only a quarter of the CO2 they do in an average year. 2023 marked the lowest “forest carbon sink” in over two decades when considering the loss of trees’ stored carbon & GHG caused by burning.
RESEARCH PAPER: A new study by Maria-Elena Vorrath et al. finds that combining biochar with rock powder boosts long-term carbon removal and soil health. In 27 weeks, net CO₂ sinks reached up to 30.9 t/ha. A 20-year forecast projects 0.5–28.7 t CO₂/ha removal. The mix improves soil mineralization, water retention, and permanence of carbon storage, aiding climate and land restoration goals.
Read on to unpack more updates:
COMMERCIAL NEWS
Chestnut Carbon secured up to $210M in non-recourse financing, led by J.P. Morgan for its afforestation project, marking a first-of-its-kind deal in the US carbon removal space (Carbon Herald)
Mission Zero won £6M from the UK government to advance design work for a DAC-enabled SAF plant in Cumbria, building on £1.38M in prior funding (Mission Zero Technologies)
Sirona Technologies unveiled its first commercial DAC container and will deliver its first certified carbon removal credits by December 2025 (Sirona Technologies)
Planboo & Carboneers launched their first joint biochar carbon removal project in Oti, Ghana, marking a milestone for early players in the space (Planboo)
Capture6 has teamed up with registry Isometric to issue credits from Project Wallaby, its DAC venture with Pilot Energy in Australia (Isometric)
Gevo sold BECCS credits from its newly acquired ethanol facility in North Dakota, expanding its carbon removal footprint (Globe Newswire)
TotalEnergies invested in forestry-based CDR developer NativState, with CO₂ credits set for delivery starting in 2030 (Carbon Herald)
NatWest doubled its climate financing target, backing techs like BECCS, SAF, and low-carbon hydrogen to accelerate decarbonization (QC Intel)
James Cook University in collaboration with Howe Farming launched Australia’s first enhanced rock weathering trials in tropical crops using basalt and limestone (ERW)
Great Carbon Valley signed a deal with Beyond Captur to co-develop a DAC project in Kenya, one of Africa’s first major DAC efforts (LinkedIn)
Phytostone launched biochar-based, cement-free wall and plaster products, cutting construction emissions while boosting insulation (Biochar Today)
RESEARCH PAPERS
Simulated Responses of the Ocean Carbon Cycle to Different Rates of Atmospheric CO2 Removal
Authors: Wenhan Yao, Long Cao, Xiaoyu Jin
Synopsis: Using an Earth system model, this study explores how ocean carbon responds to CO₂ removal scenarios. As atmospheric CO₂ declines from 4× to 1× pre-industrial levels, oceans shift from a CO₂ sink to a source, with delayed ocean carbon recovery. About 60% of excess ocean CO₂ remains even after atmospheric CO₂ returns to 1×. Radiative and biogeochemical effects interact nonlinearly, challenging assumptions of feedback linearity and complicating predictions under negative emissions pathways.
Inclusion and understanding of farmers’ perspectives in policies and policymaking for greenhouse gas removal
Authors: Charlotte Li Flodin, Johanna Liljenfeldt, Wiebren Johannes Boonstra
Synopsis: This study examines how EU and Swedish GGR policies consider farmers’ perspectives, using justice theory criteria. Despite agriculture's GGR potential, farmer engagement is low due to policy mistrust. Analysis reveals three key barriers: questions over the legitimacy of intermediaries, late inclusion in policymaking, and unequal capacity to navigate complex policies. Addressing these challenges could boost farmer trust and improve the effectiveness of GGR measures in climate transitions.
Effective and fair policy to mobilize industrial carbon dioxide removal
Authors: Soyoung Oh, Samuel Eberenz, Matthias Honegger, Olivia Wallis, Axel Michaelowa & Matthias Poralla
Synopsis: This study examines policy conflicts around scaling industrial CDR methods like BECCS and DACS. Based on interviews, workshops, and literature, it finds that dominant CDR narratives often reflect the interests of developers, industry, or policymakers, oversimplifying environmental and social impacts. These generalizations hinder balanced policy design. The authors identify key synergies, trade-offs, and institutional barriers to developing effective, fair, and scalable CDR policies.
The Effect of Ocean Alkalinity Enhancement on Pelagic Bacterial Communities: Focus points derived from a Mesocosm Experiment
Authors: Dominik Antoni, Antje Wichels, Gunnar Gerdts, Maarten Boersma
Synopsis: This study examined how Ocean Alkalinity Enhancement affects pelagic bacterial communities in a North Sea mesocosm experiment. While bacterial community structure showed resilience to alkalinity additions, functional pathway shifts and delayed abundance peaks were observed, especially above 500–750 µmol/L. These effects were likely mediated by phytoplankton changes. Findings suggest bacterial structural stability under OAE, but highlight thresholds for safe alkalinity dosing.
A literature review of direct air capture technology from a socioeconomic perspective
Authors: Yi-Ming Wei, Song Peng, Jia-Ning Kang, Lan-Cui Liu, Yunlong Zhang, Helei Liu, Tong Wu
Synopsis: This study reviews 813 DAC publications, focusing on 75 socioeconomic analyses to identify key research areas. Five hotspots include modeling DAC pathways, cost analyses, life cycle impacts, integration with energy systems, and policy/business model optimization. Challenges remain in standardizing metrics, forecasting costs, and coordinating spatiotemporal deployment. The authors call for stronger R&D, policy support, and robust carbon removal verification methods to advance DAC adoption.
Rapid mineralisation of carbon dioxide in peridotites
Authors: Juerg M. Matter, Joanna Speer, Christopher Day, Peter B. Kelemen, Amal Ibrahim, et al.
Synopsis: This study demonstrates rapid carbon mineralization of industrial CO₂ emissions in mantle peridotite at a pilot site in Oman. Injected CO₂ from an ammonia plant mineralized into carbonates within 45 days, with ~88% conversion confirmed by chemical and isotopic analysis. The results highlight carbon dioxide capture and mineralization (CCM) in peridotite as a promising, low-risk solution for permanent CO₂ storage, offering a viable path for large-scale carbon removal.
CO2 mineralization induced by non-urea heterotrophic microorganisms: investigation of CO2 sequestration and mineralization mechanisms
Authors: Li Chen, Yue Feng, Xiangming Hu, Yanyun Zhao, Jindi Liu, Mingyue Wu, Xiao Li, et al.
Synopsis: This study shows that Sporosarcina pasteurii enhances CO₂ sequestration under elevated CO₂ levels via microbial bio-mineralization. At 30% CO₂, absorption increased by 49.3%, with calcium ions boosting carbonic anhydrase (CA) activity. Higher CO₂ also led to smaller CaCO₃ particles. TEM revealed EPS involvement in mineralization. CA accelerated CO₂ hydration and CaCO₃ formation, confirming the bacterium’s potential for efficient, CO₂-dependent carbon capture in alkaline conditions.
Toward Electrochemical Marine Carbon Removal Using Immobilized Proton Carriers
Authors: David G. Kwabi
Synopsis: This paper presents a novel pH-swing electrochemical process for CO₂ removal from seawater using redox-active electrodes with organic proton carriers. By inducing reversible pH shifts in a flow cell, the system enables efficient marine carbon capture. Experimental and modeling studies show promising results, and efforts toward commercialization are underway. This scalable approach could significantly aid atmospheric CO₂ mitigation using renewable electricity.
Gridded forest carbon sinks and carbon removal projections from 2020 to 2060 in China
Authors: Min Jia, Shu Ye, Li Zhang, Pengcheng Wu, Ni Huang, Yanfeng Bai, Jianhui Ruan, et al.
Synopsis: This study assesses China’s forest carbon sink potential and its CO₂ offsetting role from 2020 to 2060 using grid-level, annual, and national data under SSP-RCP scenarios. Forest sinks are projected to peak around 2025, with national CO₂ peaks varying by scenario. Provinces like Yunnan lead in carbon sinks, while Shandong is a major emitter. The sink-to-emission offset ratio may rise from 4.43% to 62.87%, highlighting the need for region-specific emission policies to support China’s Dual-Carbon goals.
Beyond Inorganic C: Soil Organic C as a Key Pathway for Carbon Sequestration in Enhanced Weathering
Authors: Laura Steinwidder, Lucilla Boito, Patrick J. Frings, Harun Niron, Jet Rijnders, et al.
Synopsis: This 15-month mesocosm study assessed enhanced weathering using basalt and steel slag. Inorganic CO₂ removal was minimal (<0.12 t CO₂/ha), as most base cations were retained in clays or (hydr)oxides, not forming carbonates. However, soil organic carbon (SOC) dynamics played a larger role—SOM decomposition increased CO₂ emissions, but plant inputs and SOC stabilization offset losses. Though total SOC stocks were unchanged, more carbon moved into stable pools, highlighting long-term C storage potential.
Pyrogenic carbon and Carbonating Minerals for Carbon Capture and Storage (PyMiCCS) Part II: Organic and Inorganic Carbon Dioxide Removal in an Oxisol
Authors: Maria-Elena Vorrath, Thorben Amann, Johannes Meyer zu Drewer, Nikolas Hagemann, Cierra Aldrich, et al.
Synopsis: This 27-week lab study evaluated carbon removal via co-applied and co-pyrolyzed biochar and rock powder. Net carbon sinks ranged from -0.1 to 30.9 t CO₂/ha, with co-application enhancing soil remineralization and permanence. Elevated CO₂ boosted alkalinity flux, while biochar improved water retention and reduced waterlogging. A 20-year forecast projects 0.5–28.7 t CO₂/ha removal. Though biochar alone offers higher short-term C removal, combining it with rock powder enhances stability and soil health.
Organic Matter Availability and the Production of Methane-Derived Dissolved Organic Carbon at Methane Seeps
Authors: Ellen Lalk, John W. Pohlman, Laura L. Lapham
Synopsis: This study explores how methane seeps along the Cascadia margin contribute methane-derived carbon to dissolved organic carbon (DOC) in the ocean. At sites with low sedimentary organic carbon (<2% TOC), up to 80% of DOC is methane-based, linked to enhanced anaerobic oxidation of methane (AOM). In contrast, high-TOC sites show lower methane-DOC conversion due to microbial competition. The global flux of methane-derived DOC is estimated at 0.07–10.1 Tg C/yr, influencing deep-sea carbon cycling.
Advancements in Direct Air Capture Technologies: Engineering Solutions for Scalable CO₂ Removal
Authors: Hikmat Ayoola Sodiq, Temitayo Oluwaseyi Ogunwoye, Nicodemus Chidera Omekawum, et al.
Synopsis: This study shows that direct Air Capture removes CO₂ directly from air and could help cut 1–10 billion tons annually by 2050. Recent advances have boosted efficiency by 15–20% and lowered costs to $200–600/tCO₂. Some plants now capture up to 1 MtCO₂/year. Modular designs and clean energy reduce cost and energy use, but challenges remain—especially infrastructure and storage. With durable materials, global DAC hubs, and better incentives, DAC could play a key role in reaching net-zero.
Ocean liming can help achieve the Paris climate target
Authors: Jessica Strefler, Katarzyna Kowalczyk, Verena Hofbauer, Tabea Dorndorf and Lavinia Baumstark
Synopsis: This study shows ocean liming could significantly aid carbon removal in the second half of the century, easing pressure on land-based methods like bioenergy. While early deployment is limited, it could remove up to 5 GtCO₂/year later this century. Impacts on marine ecosystems remain uncertain and need further study.
WEB POSTS
First floating hydrogen power plant enters test phase (ARD)
Sprinkling limestone on farms may offer an unexpected climate win (New Scientist)
Start-ups capture carbon dioxide in New York City (C&en)
EU 2040 climate target: Implications for carbon dioxide removal (Carbon Direct)
Planetary’s Summer 2025 Update (Planetary Tech)
A simple lab test that might be able to predict the suitability of a specific rock/soil combination for EW-CDR (Carbon Drawdown Initiative)
Opinion: Ocean-Based Solutions: The Missing Link In Shipping’s Decarbonization Strategy (Carbon Herald)
Biochar’s Scientific Role in Carbon Credits (Biochar Today)
Frontier: Stripe, Google, Shopify, H&M & More Invest in CDR (Sustainability Magazine)
VCM: BECCS, VCS-registered biochar credits heard on the day (QC Intelligence)
New carbon removals fund aims to spur project development (Trellis)
Geological carbon removal: Is the UK ready to lead? (Business Green)
How do we remove greenhouse gases? (University of Oxford)
Finale: Technology-based CDR Potential in the Middle East (Global ClimateTech Watch)
INTERVIEW: Direct ocean carbon removal startup declares technology advantage over DAC (S&P Global)
Why a tech start-up wants to pump your faeces deep underground (New Scientist)
Insights: Permanent Carbon Removal RFP: Phase 1 concludes with strong applicant pool (Planet 2050)
Gold Standard publishes Engineered Removals Requirements, encouraging methodology and project development (Edie)
Sitos Group Concludes ReGen Monterey Pilot: Outcomes and Lessons Learned (Biochar Today)
A Phased Approach to Integrating Permanent Carbon Dioxide Removals in the European Union Emission Trading System (NEPs)
Developer forecasts premium UK carbon removal credits to reach £500/t by 2050 (Carbon Pulse)
Germany’s Budget Cuts Leave Heavy Industry Stuck with Dirty Tech (Bloomberg)
Carbon Removal as Ecological Succession: From Zero-to-One to One-to-Two (Reversing Climate Change)
REPORTS
CDR offtakes reach 61.5 mln tCO2e in H1; tech giants continue to drive demand (Fast Markets)
The Navigator, July 2025 Edition (Carbon Direct)
State of the Market: CDR (2025) (AlliedOffsets)
2025 Q2 Durable CDR Market Update - Biggest Quarter Ever (CDR.fyi)
Methane Removal Under the Paris Agreement (Sabin Center for Climate Change Law)
World’s Forest Carbon Sink Shrank to its Lowest Point in at Least 2 Decades, Due to Fires and Persistent Deforestation (WRI)
The role of carbon markets in financing carbon dioxide removal - An introduction for buyers and financiers (Green Finance Institute and ERM)
UPCOMING EVENTS
(NEW) CDR and credibility: Unpacking reversal rules under Article 6.4 by CDR Policy Scoop | 30 June 2025 | Online
Inaugural Oxford Symposium on the Carbon Removal Budget | 31 July 2025 | United Kingdom
AltaSea Open House: Captura | 09 August 2025 | United States
(NEW) Soil, Carbon, and Livelihoods: Advancing Climate-Smart Agriculture Through Biochar and ERW | 13 August 2025 | Online
(NEW) From vision to value: The forces shaping the long-term future of CCUS, carbon offsets and removals by Decarb Connect | 19 August 2025 | Online
(NEW) SBTi Net-Zero Roundtable: Latest Updates & Open Q&A by Charlie Renzoni & Carbon Business Council | 26 August 2025 | Online
The Sink by Poppy Russell, Matt Isaacs & The Drop | 16 September 2025 | Malmö, Skåne län
Energy, Fuels & Decarbonisation Expo (EFD Expo) by NEC | 17-18 September 2025 | UK
Navigating Marine Carbon Dioxide Removal: From Science to Regulation by Columbia University | 19 September 2025 | New York, USA
(NEW) Carbon Removal Community Reception: Climate Week NYC Edition! by Carbon Business Council & 4 others | 22 September 2025 | New York
The UK GGR Event by CO2RE Hub | 29 September - 01 October 2025 | United Kingdom
Climate Technology Show by Excel London | 01-02 October 2025 | UK
India's Carbon Removal Summit by Alt Carbon | 05 October 2025 | Bengaluru, India
(NEW) Exploring a Removal Compliance System to drive lasting carbon removal demand in the EU by CarbonGap | 07 October 2025 | Brussels
Earth observation for monitoring, reporting and verification of carbon removals 2025 by European Environment Agency | 7-10 October 2025 | København
2nd UPTAKE Stakeholder Workshop | 09 October 2025 | Athens
CDR Summit by Carbon Unbound | 21 & 22 October 2025 | London
What’s Hot in Carbon Removal – A Peek into the Future of Climate Tech by AirMiners | 28 October 2025 | Online
(NEW) What’s Next for Durable Carbon Removal: Getting to Gigatonne by Trellis | 29 October 2025
European Cement Decarbonisation Summit 2025 | 5-6 November 2025 | Germany
Enhanced weathering with agriculture for atmospheric carbon dioxide removal by The Royal Society | 17-18 November 2025 | Online
CO2 Forward 2025 : South Asia's Premier CDR Summit by Carbon Removal India Alliance (CRIA) | 04 December 2025 | New Delhi
We have curated a “Carbon Removal Events Calendar.” Explore and stay informed about upcoming events, conferences, and webinars on Carbon Dioxide Removal technology. Sync specific events / all events to your default calendar to ensure you never miss out on important CDR updates.
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JOB OPPORTUNITY
Geochemical Data Science Fellow at Cascade Climate | Boston, MA
"Cascade’s initial focus has been advancing the development of Enhanced Rock Weathering (ERW) as a promising climate-smart agriculture and carbon removal solution, underpinned by its scientific evidence base and its potential for gigaton-scale, durable carbon dioxide removal."
Reservoir Engineer at Cella | Nairobi with frequent travel to the Project Site (Elementaita, Nakuru County)
"Cella is a venture-backed climate tech company developing in-situ CO₂ mineralization projects to deliver safe, permanent carbon removal at gigaton scale."
Senior Mechanical Engineer at Marble | Paris, France
"Marble is a climate tech venture studio. They partner with scientists, engineers and operators to build and scale up unique deeptech startups that slash emissions, remove carbon and cool the planet."
Plant Design Engineer – Direct Air Capture (DAC) Engineering at DACMA | Hamburg
"DACMA removes CO2 from the atmosphere to fight global warming and heating up of the earth’s surface."
Internship: Assembling and Testing of Equipment for DAC Sorbent Lifetime Analysis at Skytree | Amsterdam, Noord-Holland, Netherlands
"Skytree is engineering the CO₂ transition by building machines to capture CO₂ from the air and repurpose it for good: whether it’s reused across different industries or stored permanently."
Business Development Manager at Mission Zero Technologies | Hybrid (UK)/Remote (Worldwide)
"Mission Zero Technologies is a London-based climate tech startup working to reinvent carbon for a thriving planet. Since 2020, we have rapidly pioneered the world’s most versatile direct air capture (DAC) technology to recover historic CO₂ emissions from the atmosphere, anywhere at any scale."
Head of Carbon Project Delivery at Climate Impact Partners | London
"Climate Impact Partners delivers solutions for climate action. We are carbon market specialists and a go-to partner for every stage of the net zero journey."
Looking for your dream job in CDR? There are 613 jobs available *right now*: check them all out at:
PODCASTS
Unlocking private capital for carbon removal – one mill at a time | Powering Sustainable Ideas
"What happens when you design a carbon removal business around the needs of real industries and real customers – rather than new tech? CO280’s Natalie Khtikian and Jon Rhone explain how their project development approach is transforming pulp and paper mills into high-quality, high-volume CDR hubs. Speaking with Jonathan Sisto, Managing Director at RBC Capital Markets, they share why unlocking private capital, not just public support, is central to their model – and to the future of CDR."
Is Decarbonization Dead? | The Ezra Klein Show
"Biden passed the most ambitious climate legislation in American history. Trump just shredded it. What does that mean for the future of renewable energy in America? Where does the climate movement go from here? And is it too late for us to avert climate catastrophe?
To answer these questions, I invited onto the show two climate experts: Jesse Jenkins, who is a leading climate modeler and a professor at Princeton University, where he runs the Princeton ZERO Lab, and Jane Flegal, who is the executive director of the Blue Horizons Foundation and served on the Biden administration’s climate policy team.
We discuss how far Trump’s policies have set us back, the lessons the climate movement should learn from this loss and what the next wave of climate politics may look like."
Beginner's Mind for this Bizarre Moment in Carbon Removal—w/ Marian Krueger, Coauthor of Race to Zero: How Companies Can Lead the Way to Climate Neutrality | Reversing Climate Change Podcast
"When you finish painting the Golden Gate Bridge, it is time to paint the Golden Gate Bridge. With a subject as interdisciplinary as carbon dioxide removal, a beginner's mind can also be a great asset!
Marian Krueger is the co-author of Race to Zero: How Companies Can Lead the Way to Climate Neutrality, an intoductory text to CDR that lucidly explains what carbon removal is, why it's necessary, and how to support its continued development.
The book will soon be published (August 4th, 2025), and you should grab a copy for yourself and for the policymaker and/or sustainability professional in your life!
Marian's experience as the Co-Founder and Managing Director of remove, a European nonprofit growing the carbon removal ecosystem through accelerator programming, gives him enormous vantage into the sector.
This conversation goes broad, deep, and discusses some of the biggest questions in CDR."
A Billion-Tonne Vision: The Company Using Rocks to Remove Carbon and Boost African Agriculture with Sam Davies | Unlocking Africa
"In this episode, Sam explores the science behind ERW, the social impact of regenerative agriculture on smallholder farmers, and how Flux is building one of the most promising carbon removal platforms on the continent. He also unpacks the urgent need for credible carbon credits and policy innovation and why Africa is the next frontier for scalable climate solutions."
Accelerating Decarbonization Through Waste-to-Value Solutions | Biomass Magazine
"This week's Biomass Magazine's Podcast Series features Jason Dodier, CCO & Co-Founder at GRAIN Ecosystem. Interviewed by Anna Simet, Director of Content & Senior Editor of Biomass Magazine."
CDR Durability: What counts as real climate impact? - with Gabrielle Walker | The CDR Policy Scoop
"Like it or not, the “like-for-like” debate in carbon removal isn’t going anywhere anytime soon. Conversations around temporary versus durable, conventional versus novel removals are increasingly diverging.
Should carbon markets foresee separate roles for these removal types, or strive for a common ground that makes all removals comparable? Is true compatibility even possible?
Co-hosts Sebastian Manhart and Eve Tamme are delighted to welcome Gabrielle Walker, co-founder of Rethinking Removals and CUR8, as their guest. Scientist-turned-CDR powerhouse, Gabrielle has a deep understanding and passion for these topics like no other.
Join the conversation to find out what “like-for-like” really means, why it matters for policy and net-zero claims, and how to build integrity with today’s knowledge."
YOUTUBE VIDEOS
Turning CO₂ into Stone — In-Situ Mineralization w/ Dr Phil De Luna | Bite-Size Climate Tech
"Recorded 6 May 2025 (Phil was still Chief Science & Commercial Officer at Deep Sky. He has since moved on, but the insights remain evergreen.) In this bite-size episode we dive into in-situ mineralization—the “Medusa move” that turns captured CO₂ into rock right underground."
Sell your tons to the Airminers buyers club | Tito - AirMiners
In Case of Emergency Break Glass | The Aspen Institute
"Get a look into the complex dynamics that surround the deployment of carbon dioxide removal solutions and the latest science, policy, and scaling challenges that moderate its speed. Hear from experts on the careful balance between trade-offs and benefits and how these fit into broader global strategies to mitigate the impacts of climate change."
Forest Power: Cooling the Planet Naturally | Climate Emergency Forum
"This engaging YouTube video features a critical discussion at the Global Climate Tipping Points Conference in Exeter, UK, where host Herb Simmens interviews Rob de Laet and Peter Bunyard, co-authors of the book "Cooling the Climate." The dialogue centers on their pioneering work linking large-scale ecosystem restoration-especially the recovery of tropical forests like the Amazon-with the reversal of global warming. Both guests share their personal journeys: Rob de Laet recounts his practical reforestation efforts in Brazil and how rapid local ecological recovery inspired broader climate ambitions, while Peter Bunyard reflects on his background in scientific research, the founding of The Ecologist magazine, and decades of work on climate and biosphere interactions."
The Rock-Solid Future of Carbon Removal w/ Enhanced Weathering | Catching Carbon
"In this episode of Catching Carbon, we dive into a carbon removal method that's moving fast from theory to large-scale deployment: enhanced rock weathering (ERW). Our guest, Ryan King from UNDO, walks us through the science, economics, and real-world application of this XPRIZE-recognized technology.
Ryan helps us understand why enhanced rock weathering is gaining serious traction:
What it is: a natural process of CO2 removal from the atmosphere that we've learned how to speed up by 100,000 times using finely crushed silicate rock.
XPRIZE recognition: UNDO placed as a third runner-up in the $100M XPRIZE Carbon Removal competition, beating out thousands of entrants with their scalable approach. • Start with nature: The process builds on natural rock weathering, which has been pulling CO2 from the atmosphere for millions of years.
• Faster, smarter, verified: By crushing rock and spreading it across farmland, the surface area and reactivity increase dramatically- making the process far more efficient. Carbon capture is tracked, measured, and verified, with UNDO's IP pending patent based on measuring CO2 absorption via soil water content.
• Added benefit: ERW also acts as a natural soil enhancer, providing benefits for agriculture beyond just climate impact.
Farmer incentives: It can replace liming, potentially reducing costs for farmers while supporting regenerative practices.
• Commercialization strategy: Ryan outlines how UNDO is moving beyond research and into large-scale deployment, targeting gigaton-scale impact.
Rock of choice: Among many candidates, UNDO has identified the best-performing rock for both reactivity and carbon permanence.
• Retention rate: They're achieving 90% efficiency in terms of retaining captured carbon versus what's potentially re-emitted."
The Weekly Challenger: A Local Community CDR Purchasing Challenge Stream | OpenAir
Weekly Carbon Removal Updates from 21-27 July 2025 | Carbon Removal Updates Bulletin
DEADLINES
Call for Consultation—Isometric opened public consultation on its draft module for storing biochar in construction | Comments due by 30 July 2025
Climate Intervention Environmental Impact Fund announced $75,000 grants towards environmental impact analysis for climate restoration projects | Deadline to apply: 01 August 2025
Call for Consultation—Global Tree C-Sink Standard V2.0 | Deadline: 11 August 2025
(NEW) Wren Climate Collective is offering a $100K grant to early-stage CDR startups | Applications close 11 August 2025
Call for Abstract for CMIP Workshop—Session: Modelling Carbon Dioxide Removal | Submission deadline: 13 August 2025
Funding Opportunity-Remove opened India CDR accelerator applications | Deadline 20 August 2025
Call for Applications—For its fifth accelerator cohort, the C2V Initiative and its Carbontech Leadership Council (CLC) are accepting applications from startups at Technology Readiness Level (TRL) 4-7 that are developing carbontech solutions | Deadline: 29 August 2025
Call for Applications—Remove launched EU CDR accelerator applications for early-stage startups | Apply by 08 September 2025
Funding Opportunity—Horizon Europe launched funding calls for Ocean Alkalinity Enhancement | Deadline: 16 September 2025
EU draft CRCF methodologies (DACCS, BioCCS, biochar) open for feedback until 22 September 2025
The EU LIFE programme has launched a €28M funding call for Climate Change Mitigation projects, including CDR | Apply by 23 September 2025
Call for Manuscripts—Soil microbiome in carbon sequestration | Submission deadline: 29 October 2025
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