CARBON REMOVAL WEEKLY SUMMARY (31 MARCH - 06 APRIL 2025)—WEEK#14
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. Book
7. Upcoming Events
8. Job Opportunities
9. Podcasts
10. YouTube Videos
11. 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 POLICY: European Commission considering allowing Member States to substitute carbon removal for some portion of emissions cuts to meet 2040 climate goal.
RESEARCH PAPER: A new study in Nature Climate Change revealed that marine-climate intervention projects are advancing faster than governance can manage, risking unverified CO₂ removal claims and potential harm to marine ecosystems.
MAJOR CDR DEAL: Frontier signed a $31.6M deal with Hafslund Celsio to remove 100,000 tCO₂ from 2029–30 through a waste-to-energy retrofit in Oslo.
EVENT RECORDING: Sebastian Manhart from Carbonfuture and Martin Freimüller from Octavia Carbon faced off in a lively Biochar vs DAC debate (signed up by 1000+ people), hosted by CDR Policy Scoop and moderated by Eve Tamme. Catch the replay here.
BOOK: Benedict Probst and Marian Krüger from Remove have released a new book on carbon removal titled “Race to Zero: How Companies Can Lead the Way to Climate Neutrality”. The book highlights that, alongside significant greenhouse gas emissions reductions, achieving any Net Zero goal requires CDR. It will officially launch on April 17.
NEW mCDR RESOURCES: Ocean Visions launched a Marine CDR Ecosystem Database to map sector activity, while Carbon Direct and Microsoft released science-based criteria to guide high-quality marine CDR projects and credit purchases.
Read on to unpack more updates:
COMMERCIAL NEWS
Frontier signed a $31.6M deal with Hafslund Celsio to remove 100,000 tCO₂ (2029–30) via a waste-to-energy retrofit in Oslo (Frontier Climate)
Ecotrust Forest Management signed a ten-year deal with Meta to deliver 676,000 tonnes of nature-based CDR credits through 2035 (ESG Today)
Microsoft signed an offtake deal with Terradot to remove 12,000 tonnes of CO₂ via enhanced rock weathering between 2026–2029 (Businesswire)
Petrobras and BNDES launched ProFloresta+ which is a $77M Amazon reforestation program to capture 15 MtCO₂ and create 4,500 jobs (Carbon Herald)
Kairos has received £1M from Defra to support decarbonizing agriculture by turning organic waste into carbon removal and recovering nutrients for fertilizer reuse (Kairos Carbon)
Varaha has sold 60,000+ tCO₂ removal credits to Klimate across five Asia-based projects (Clean Tech Hero)
Carbonplace and Isometric partnered to boost integrity in CDR credit trading (LinkedIn)
Skanska signed $98.7M contract with Stockholm Exergi to lay foundations and build a quay for the BECCS Stockholm facility (Yahoo)
Altitude secured 25,000 tons of CO₂ Removal Certificates from biochar-based carbon removal facilities in West Africa, ensuring verification via the Puro Registry (Altitude Carbon)
Removall Carbon and Sumitomo Corporation launched Summit Removall to co-finance global CDR projects (LinkedIn)
New Forests and Oji Holdings launched a $300M fund to expand forestry by 70,000 hacters and sequester 1.5 MtCO₂/year (Impact Investor)
MaRS Discovery District and M-Lab pre-purchased CDR credits from six Canadian startups to fund early-stage tech (Newswire)
Ocean Visions launched a Marine CDR Ecosystem Database to map sector activity (Ocean Visions)
SEER launched a new unit to produce biochar and tokenized CDR credits for premium markets (Biochar Today)
Bayer planned to issue up to 250,000 tCO₂ removal credits from regenerative rice farming in India (Carbon Herald)
RESEARCH PAPERS
Estimates vary but credible evidence points to gigaton-scale climate change mitigation potential of biochar
Weng, Z. H., & Cowie, A. L. (2025). Estimates vary but credible evidence points to gigaton-scale climate change mitigation potential of biochar. Communications Earth & Environment, 6(1), 259.
Synopsis: Biochar is a promising CO2 removal strategy with potential benefits for food security, land management, and the circular economy. Nineteen studies estimate its global climate change mitigation potential at 0.03 to 11 Pg CO2 equivalent per year. This range varies due to differences in scope, definitions, and assumptions regarding biomass availability and biochar technologies. Recent assessments suggest a sustainable mitigation potential of 2.6-10.3 Pg CO2 equivalent per year. Updated evaluations using integrated models are needed to refine these estimates.
An Emerging Carbon Sink in Headwater Streams and the Role of Large Wood and Riparian Forest Structure
Peters-Collaer, S., Keeton, W. S., Warren, D. R., & Kirchmeir, H. (2025). An Emerging Carbon Sink in Headwater Streams and the Role of Large Wood and Riparian Forest Structure. Ecosystems, 28(2), 1-15.
Synopsis: This study investigates the carbon storage potential of large wood (LW) in streams, focusing on the Hubbard Brook Experimental Forest (HBEF) in New Hampshire and comparing it to old-growth forests in the Adirondacks. Results show substantial variation in LW carbon storage, with HBEF streams storing 7.5 Mg C/ha and old-growth streams storing 23.8 Mg C/ha. The study highlights the role of large trees and old-growth forests in increasing LW carbon storage, supporting conservation practices that enhance this natural climate solution.
Who cares about carbon dioxide removal? Assessing actors, policy positions, and participation modes within European and United Nations public consultation processes
Losi, L., Fritz, L., & Sovacool, B. K. (2025). Who cares about carbon dioxide removal? Assessing actors, policy positions, and participation modes within European and United Nations public consultation processes. Climate Policy, 1-16.
Synopsis: This study explores the stakeholders involved in two 2023 public consultations on CDR by the European Union and the UNFCCC. It maps participants' characteristics and analyzes their submissions. Most participants are based in the Global North, with for-profit actors focused on farming and greenhouse gas removal. Submissions reveal a divide between expansive positions, often held by for-profit actors, and restrictive stances emphasized by non-governmental organizations. This highlights the need for balanced governance to ensure equitable and effective deployment of CDR technologies.
Novel marine-climate interventions hampered by low consensus and governance preparedness
Ogier, E. M., Pecl, G. T., Hughes, T., Lawless, S., Layton, C., Nash, K. L., & Morrison, T. H. (2025). Novel marine-climate interventions hampered by low consensus and governance preparedness. Nature Climate Change, 1-10.
Synopsis: This study surveys 332 marine-climate intervention practitioners, identifying 5 types and 17 sub-types of interventions across 37 marine systems globally. Most interventions (71%) focus on supporting species and ecosystem adaptation, while 29% are aimed at climate mitigation and societal adaptation. Practitioners show varied perceptions of climate benefits, with low consensus on intervention goals. Decision-making often prioritizes technical feasibility over broader ecological, cultural, and social risks, with concerns about under-regulation in current testing and deployment.
CMIP6 Models agree on similar carbon cycle feedbacks between enhancing terrestrial and marine carbon sinks
Wey, H. W., Moustakis, Y., Nützel, T., Oschlies, A., Schwinger, J., Hajima, T., ... & Keller, D. (2025). CMIP6 Models agree on similar carbon cycle feedbacks between enhancing terrestrial and marine carbon sinks. Environmental Research Letters.
Synopsis: This study compares the effectiveness of afforestation and reforestation (A/R) and ocean alkalinity enhancement (OAE) in enhancing terrestrial and marine carbon sinks under the high emission scenario SSP5-8.5, using eight CMIP6 Earth system models. By mid-century, both methods can reduce atmospheric CO2 by up to 20 ppm, though their effects on global mean temperature are hard to detect, complicating monitoring efforts. The study finds similar carbon cycle feedback ratios for A/R and OAE (-16% and -13%, respectively), despite large inter-model differences in carbon removal amounts.
Integrating solid direct air capture systems with green hydrogen production: Economic benefits and curtailment reduction
Kim, S., Park, J., & Lee, J. H. (2025). Integrating Solid Direct Air Capture Systems with Green Hydrogen Production: Economic Benefits and Curtailment Reduction. Computers & Chemical Engineering, 109102.
Synopsis: This study evaluates the economic viability of integrating green hydrogen systems with solid sorbent-based DAC technology. Results show that this integration can reduce renewable energy curtailment by up to 40%, leading to a 6% reduction in total annualized costs compared to independent operation. Further improvements, such as a 50% reduction in DAC costs, optimized CO2-to-H2 ratios, and enhanced heat pump flexibility, could increase economic benefits to 12%.
Amino Acid-Functionalized Nanoporous Metal–Organic Frameworks for Boosting CO2 Capture under Dry and Humid Conditions
Zhao, Y., Zhang, Z., Gao, Q., & Wei, W. (2025). Amino Acid-Functionalized Nanoporous Metal–Organic Frameworks for Boosting CO2 Capture under Dry and Humid Conditions. ACS Applied Nano Materials.
Synopsis: A new postsynthetic method incorporates amino acids (AAs) into an ultrastable MIP-206-OH metal-organic framework (MOF) to enhance CO2 capture. The MIP-206-OH-Gly material showed superior CO2 capture, with capacities 92.8% and 71.9% higher than the pristine MOF at 1 bar and 30 bar, respectively. The modified MOFs also demonstrated enhanced performance and stability under humid conditions, maintaining efficiency after 10 cycles, offering a scalable solution for carbon capture.
Carbon removal beyond the trees
Cox, E., Low, S., Baum, C. M., Fritz, L., Waller, L., Spence, E., ... & Bellamy, R. (2025). Carbon removal beyond the trees. Communications Earth & Environment, 6(1), 253.
Synopsis: This paper entails that the widespread appeal of tree planting for carbon removal may bias the public against other techniques, hindering the development of a diverse portfolio of carbon removal options. While tree planting is intuitive and operational on a large scale, relying solely on it for climate mitigation is problematic due to land and permanence limitations. To achieve scalable carbon removal, a variety of methods must be employed. Public perceptions of tree planting influence the broader conversation, necessitating further research to understand this bias and its impact on policy and engagement.
Dissolved load, chemical weathering, and CO2 uptake dynamics of small tropical mountainous rivers of Southern Granulite Terrain, Karamana and Vamanpuram, Western Ghats, India
Upendra, B., Ciba, M., Rahul, S., Sreenivasulu, G., Reddy, S. K. K., Arun, V., & Krishnan, K. A. (2025). Dissolved load, chemical weathering, and CO2 uptake dynamics of small tropical mountainous rivers of Southern Granulite Terrain, Karamana and Vamanpuram, Western Ghats, India. Scientific Reports, 15(1), 11684.
Synopsis: This study examines chemical weathering in the Karamana and Vamanapuram River Basins (KVRB) in India’s Southern Granulite Terrain. Analyzing 72 water samples across three seasons, results show silicate weathering is the dominant process, followed by anthropogenic and atmospheric contributions. The KRB exhibits higher silicate weathering and CO2 consumption rates compared to VRB. The study highlights the complex interaction of weathering processes with climate and geomorphological factors, particularly in KRB's steep, humid terrain.
Artificial Intelligence Technique for Prediction of Carbon Stocks and Uncertainty Estimates in Tropical Forests
Akinbiola, S., Akinsola, J. E. T., Ajagbe, S. A., Salami, A., Olubaju, A., Awotoye, O., & Awoleye, O. M. (2025). Artificial Intelligence Technique for Prediction of Carbon Stocks and Uncertainty Estimates in Tropical Forests. SN Computer Science, 6(4), 1-21.
Synopsis: The lack of a robust national forest inventory in tropical regions challenges the accurate assessment of forest productivity and climate regulation potential. This study introduces an AI-based approach for predicting carbon stocks in tropical forests using machine learning (ML) algorithms: Multi-Layer Perceptron (MLP), Support Vector Machines (SVM), Random Forest (RF), and K-Nearest Neighbors (KNN). Among them, the Random Forest model performed best with 98.3% accuracy and minimal error. The study recommends further use of multi-criteria decision-making to select optimal algorithms for carbon stock modeling.
Mapping accumulated carbon storage of global mangroves from 2000 to 2020 at a 1 km resolution
Wang, M., Zhang, T., Xie, Y., Zhang, Z., & Wu, X. (2025). Mapping accumulated carbon storage of global mangroves from 2000 to 2020 at a 1 km resolution. Scientific Data, 12(1), 552.
Synopsis: This study developed a global gridded dataset of mangrove accumulated carbon storage from 2000 to 2020 at a 1 km resolution, using high-precision mangrove distribution data from the Global Mangrove Watch. The dataset captures spatiotemporal variations in carbon storage and identifies hotspots of carbon stock changes at global and regional levels. The results can inform conservation and restoration efforts, prioritize policy interventions, and support the sustainable management of mangrove ecosystems globally.
Mechanistic Insights into CO2 Sequestration via Clathrate Hydrate Formation from Molecular Simulations: Influence of Temperature and Pressure
Shen, Y., Shen, Q., Jin, Y., & He, Z. (2025). Mechanistic Insights into CO2 Sequestration via Clathrate Hydrate Formation from Molecular Simulations: Influence of Temperature and Pressure. Energy & Fuels.
Synopsis: This study investigates CO2 hydrate formation in subsea sediments under varying temperature and pressure conditions using molecular dynamics simulations. Results reveal that CO2 hydrate formation is more sensitive to temperature than pressure. Hydrate forms at lower temperatures (250 K) and specific pressures (50, 40, 30, and 20 MPa), with hydrogen bond formation playing a crucial role in hydrate nucleation. Temperature destabilizes hydrogen bonds, while pressure has minimal impact. Additionally, metastable hydrate cages can transform into stable structures through molecular adjustments.
Unexplored Carbon Sink Potential? Exploring Pathways to Integrate Peatland Restoration into CDM and REDD+ Mechanisms
Liu, Z., Lin, C., & Ren, H. (2025). Unexplored Carbon Sink Potential? Exploring Pathways to Integrate Peatland Restoration into CDM and REDD+ Mechanisms. In E3S Web of Conferences (Vol. 621, p. 03018). EDP Sciences.
Synopsis: Peatlands are vital carbon reservoirs, but their degradation turns them into major greenhouse gas sources, challenging Sustainable Development Goals (SDGs). This paper explores integrating peatland restoration into climate finance mechanisms like CDM and REDD+, showing its cost-effectiveness in carbon reduction. Advanced technologies and academic involvement improve carbon credit monitoring, addressing verification challenges. By introducing baseline-setting methodologies, the paper suggests enhancing carbon credit standards and advancing global carbon market sustainability.
Unlocking the Depth-Dependent Limitation of External CO2 Curing in Carbonatable Cementitious Materials Using Enzymatic Solution-Impregnated Hydrogels
Fahim, A. A., & Khanzadeh Moradllo, M. (2025). Unlocking the Depth-Dependent Limitation of External CO2 Curing in Carbonatable Cementitious Materials Using Enzymatic Solution-Impregnated Hydrogels. ACS Sustainable Chemistry & Engineering.
Synopsis: Carbonatable binders have gained attention for their ability to absorb CO2 and form durable, eco-friendly carbonate materials. However, their use is limited due to chemical and physical barriers. This paper explores enhancing CO2 curing in carbonated cementitious materials (CCMs) using enzymatic solution-impregnated hydrogels. The method improves mechanical performance by up to 80% and calcium carbonate precipitation by 15 times compared to control systems. The process accelerates CO2 influx and carbonate crystal growth, providing a uniform carbonation profile, advancing high-performance carbon sink materials.
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), 1-13.
Synopsis: This study examines farmland in the Shiyang River basin, analyzing Soil Organic Carbon (SOC) content across upstream, midstream, and downstream areas. Findings show that SOC levels are higher in the upper and middle reaches, with oasis farmland exhibiting higher SOC than marginal farmland. Agricultural practices generally increase SOC, while land abandonment decreases it. The study provides insights into how agriculture in arid oasis regions influences carbon cycling.
Alkalinity Factory Can Achieve Positive Climate Benefits Within Decades
Yan, Q., Zheng, L., Zhuang, W., & Liu, J. (2025). Alkalinity Factory Can Achieve Positive Climate Benefits Within Decades. Journal of Cleaner Production, 145406.
Synopsis: This study evaluates the climate contributions of ocean alkalinity enhancement using a life cycle assessment approach, focusing on a marine alkalinity reinforcement system (MARS) with milled olivine as the alkalinity source. Results show that MARS can capture an average of 153.5 tons of CO2 over its lifespan, with medium-sized systems offering the best balance of carbon capture and environmental impact. Payback periods for carbon and environmental footprints range from 1.1 to 22.5 years, depending on the olivine-to-seawater ratio. The study concludes that the alkalinity factory is a viable marine carbon removal solution if configured for positive environmental benefits.
Deep uncertainty in carbon dioxide removal portfolios
Rodriguez Mendez, Q., Creutzig, F., & Fuss, S. (2025). Deep uncertainty in carbon dioxide removal portfolios. Environmental Research Letters.
Synopsis: The CDR-SPEC model introduces a mixed-integer linear optimization approach to design cost-optimal and time-dependent CDR portfolios, incorporating uncertainty in mitigation potentials, cost dynamics, and resource constraints. Results show that afforestation, reforestation, and soil carbon sequestration are robust options. Direct air capture (DACCS) emerges as the most deployed technology by 2100, but with significant variability, while BECCS is limited by land availability. Ocean alkalinization could dominate in high removal scenarios.
China’s carbon sinks from land-use change underestimated
Zhu, Y., Xia, X., Canadell, J. G., Piao, S., Lu, X., Mishra, U., ... & Qin, Z. (2025). China’s carbon sinks from land-use change underestimated. Nature Climate Change, 1-8.
Synopsis: This study analyzes the regional net carbon flux from land-use change (LUC) in China, highlighting a shift from a carbon source to a sink in the 1990s, with a net cumulative CO2 removal of 2.0 Pg C from 1981 to 2020. From 2001 to 2020, the average ELUC was −0.14 Pg C per year, representing over one-third of China's national land carbon sinks. The research shows that forest-related LUC activities significantly impact national carbon fluxes, suggesting that carbon sinks from LUC may be underestimated in global assessments and calling for region-specific modeling.
WEB POSTS
Briefing: EU taking more time with carbon storage in buildings methodology (Carbon Pulse)
Greenhouse gas removals review could boost Drax carbon capture plans (Yorkshire post)
Opinion: At A Minimum, Carbon Removal Companies Should Sign Union Neutrality Agreements (Carbon Herald)
New CTO Helin Cox to propel Climeworks’ carbon removal tech to the next level (Climeworks)
5 Tips For Purchasing Carbon Removals: A Business Leader's Guide (Forbes)
Governor Ron DeSantis Calls Carbon Sequestration Proposal A “Scam” (Carbon Herald)
Canada has a ‘window of opportunity’ to be carbon removal destination (Latitude Media)
Open Sourcing CDR: The Isometric Credit Principles (Isometric)
Failure to Communicate—Geoengineering could be crucial in the fight against climate change. But first scientists need to learn how to talk to the public about it (Science)
Opinion: Carbon Removal’s Fundamental Scaling Problem: It’s The Market Design (Carbon Herald)
Voluntary Removals Market Diversifying Beyond BECCS and DAC, says IEA (Carbon Pulse)
Carbon Removal On The Rise Amid US Sustainability Sector Disruptions (Mondaq)
EU's "fantastic" CRCF at risk of over-regulation, warns project developer (Carbon Pulse)
Upcoming Texas DAC facility operator optimistic about 45Q (Quantum Commodity Intelligence)
Betting on future forest carbon storage endangers Paris Agreement targets (Mongabay)
The New 'Black Gold' Needs More Bulls (Bloomberg)
Interview With Jack Andreasen, A Carbon Dioxide Removal Policy Leader (Clean Technica)
Policy clarity key to delivering carbon removal and carbon storage projects, says research firm (Gasworld)
Deep Sky set to launch carbon removal operations in Innisfail this summer (The Albertan)
EU exploring weaker 2040 climate goal (Politico)
Intergenerational Value of Farmland Applied Biochar (Biochar Pacific)
Australian developer sells native forestry ACCUs at $48.70/tCO2e (Quantum Commodity Intelligence)
REPORTS
Forecasting the Voluntary Carbon Market Projecting VCM growth to 2040 (Allied Offsets)
Independent Review of Greenhouse Gas Removals: terms of reference (GOV.UK)
Criteria for High-Quality Marine Carbon Dioxide Removal (Carbon Direct & Microsoft)
Soil Carbon Matters (Kite Consulting)
CDR Market Review: trends and transactions that shaped Q1 2025 (ClimeFi)
BOOK
Race to Zero: How Companies Can Lead the Way to Climate Neutrality (Benedict Probst & Marian Krüger)
UPCOMING EVENTS
(NEW) Scaling Enhanced Rock Weathering while Building Resilience for Farmers by Institute for Responsible Carbon Removal | 08 April 2025 | Online
(NEW) This is CDR: Carbon Removal's Wrong Turn? A Conversation with Paul Gambill by OpenAir Collective | 08 April 2025 | Online
Measuring, Reporting, and Verifying Biochar Projects: The Continuous Impact of Audits by International Biochar Initiative | 08 April 2025 | Online
ClimateHack Zürich: Beyond the Hype: Is Carbon Removal Delivering? by Hack | 08 April 2025 | Zürich
2nd Thought Leaders Summit to Net Zero by CEPEC Conferences | 08 April 2025 | London
IMPORTANT NOTE: I have spoken to the organisers of the 2nd Thought Leaders Summit to Net Zero on the 8th of April in London, this is a conference covering the full spectrum of renewable energy sectors. As a previous attendee, the organisers have offered a £30 discount to anyone in my network who wants to come.
The link to the event is www.carbon-assets.co.uk so if you want to attend, when you buy a ticket, simply add the code carbonremovalupdates and click APPLY, and complete the registration. The early bird price is £130 plus VAT, so you'll be paying just £100 plus VAT, which is a £30 discount at the early bird price of admission.
SBTi Draft Corporate Net-Zero Standard V2 Public Consultation: Live Q&A by SBTi | 09 April 2025 | Online
UPTAKE webinar series on CDR | Online
1) Apr 9, 2025
2) May 14, 2025
Making a Market: The Future of Carbon Dioxide Removal by Resource Wise | 10 April 2025 | Online
(NEW) Rethinking ‘Beyond Carbon’ - the insider view by BeZero Carbon | 10 April 2025 | Online
(NEW) 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
(NEW) Biochar Public Consultation by Puro.earth | 16 April 2025 | Online
An Exclusive Carbon Removal Reception at SF Climate Week by Leila Toplic & Carbon Business Council | 21 April 2025 | 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
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
First Annual Climate Restoration Summit at the 2025 EarthX Congress of Conferences | 24 April 2025 | Dallas, Texas
(NEW) 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) Carbon Newbie Summit at SF Climate Week 2025 by Carbon Newbie Summit | 25 April 2025 | California
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
(NEW) Workshop on Nature-Based Solutions for Carbon Dioxide Removal by CSink | 07 May 2025 | In-Person (Spain) & Online
(NEW) APAC CDR Summit 2025 by Puro Earth & Carbon Business Council | 07 May 2025 | Singapore
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) 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)
(NEW) 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
Operations Planner at Mati Carbon | Raipur, Chhattisgarh, India
"Mati is a carbon removal company on a mission to remove 100 million tonnes of carbon dioxide from the atmosphere through Enhanced Rock Weathering while creating agronomic and financial benefits for smallholder farmers in the Global South. Our goal is to positively impact smallholder farmers by enabling improved crop productivity and soil replenishment."
Head of Communications and Government Affairs at Vaulted Deep | Houston & San Francisco
"Vaulted Deep is a cutting-edge technology company that injects waste deep underground to support sustainability goals while providing waste management solutions to support clean land, air and water."
Legal Manager at Varaha | Gurugram, Haryana, India
"Varaha is a leading climate tech venture focused on nature-based solutions such as regenerative agriculture, ARR, and biochar projects that support smallholder land stewards at scale."
Advanced Manufacturing Engineer at Avnos, Inc. | Bridgewater, New Jersey, United States
"By design, Avnos is the world’s best shot to get to gigaton scale of carbon dioxide removal from direct air capture."
Senior Talent Acquisition Specialist at Charm Industrial | Fort Lupton, CO
"Charm'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. At scale, we can use bio-oil to make fossil-free iron."
Research Fellow (Carbon Materials Enhanced Concrete) at NTU Main Campus | Singapore
"The Energy Research Institute @ NTU (ERI@N) invites applications for the position of Research Fellow.
Key Responsibilities:
Responsible for new carbon materials enhanced concrete development (e.g. via incorporation of various carbon materials where they are securely stored but also enhance concrete property in different ways)
In charge of testing of all relevant aspects of advanced concrete material developed
Conducting cost-benefit and LCA analysis of the material developed"
Technical Project Engineer at Equatic | Los Angeles, California
"Equatic addresses one of mankind’s most pressing problems, climate change, by removing carbon dioxide (CO2) the atmosphere, while co-producing hydrogen (H2) as a green fuel, both at very low cost."
Nature-Based Research and Monitoring at Rubicon Carbon | NY, CA, or Remote
"Rubicon Carbon is a next-generation carbon solutions provider. Led by a world-class management team, Rubicon is an innovative platform that channels capital to unlock at-scale decarbonization projects and delivers trusted, enterprise-grade solutions for carbon credit purchases."
Looking for your dream job in CDR? There are 718 jobs available *right now*: check them all out at:
PODCASTS
Carbon Removal & Appropriations: The US Budget During Trump 2—w/ Erin Burns, Executive Director of Carbon180
"Sometimes, we skip right over the life stories of guests. Othertimes, it's everything. Today, it's everything.
Returning to the show after several years is Carbon180's Executive Director, Erin Burns.
Erin grew up in a coal mining family in West Virginia, got her start in Joe Manchin's Senate office, and has had a long and impactful career in carbon removal.
Today, Erin (re)explains how the budgeting process works in the United States federal government and how the appropriations process intersects with it. What is the difference, and where can voters get involved?
This is truly an improvised masterclass in civics education. Listen up for what you missed in high school, and how it will impact the future of carbon removal."
Rethinking Net-Zero - Do International Credits Help or Harm? | The CDR Policy Scoop
"On March 31st, EU Climate Commissioner Wopke Hoekstra floated various ideas for how Europe’s expected 90% emission reduction target for 2040 could be achieved.
One of them: letting EU countries purchase United Nations Article 6 credits to meet EU's 2040 climate target. Similar suggestions are currently being proposed by the upcoming German government.
This would require undoing a core principle of Europe’s Climate Law: only European reductions and removals shall count towards climate neutrality.
The backlash has been significant, especially in civil society and environmental groups."
Can We Pull Carbon Out of the Air? | The World as You’ll Know It: The Great Rebuild
"The Paris Climate Agreement says we need to reach “net zero” carbon emissions by 2050. That means for every new carbon molecule we put in the air, we have to take one out. Even the most optimistic forecasts still anticipate burning fossil fuels well past that date. So how do we balance the carbon books? Enter direct air capture, or DAC — a mechanical process that sucks carbon out of the atmosphere — which many believe will be crucial to controlling climate change. Right now the technology is extremely expensive, energy intensive, and has never been deployed at the scale necessary to make a difference. Host Arielle Duhaime-Ross speaks with the Dr. Klaus Lackner, known as the “godfather of carbon removal”; Dr. Susan Hovorka, a professor of geology who has been burying carbon underground for decades; and Dr. Emily Grubert, associate professor of sustainable energy policy at Notre Dame."
YOUTUBE VIDEOS
EU Carbon Removals Expert Group on permanent removals and carbon storage in buildings - 26/03/2025 Unlisted | EUClimateAction
Unearthing Rocks' Potential to Fight Climate Change | Meet the Finalists | XPRIZE Carbon Removal | XPRIZE
"Episode 2 of the XPRIZE Carbon Removal docuseries delves into how innovators are tapping into the power of rocks to combat climate change. Out of the six finalists competing in the Land track, four teams are pioneering ERW, a process that accelerates the natural reaction between CO2, water, and crushed rock to store carbon. While the core chemistry remains the same, each team’s approach is tailored to its geography, rock type, and mineral sources. Two other teams are innovating beyond ERW, exploring direct mineralization and mine tailing optimization to capture and store CO2 at scale.
Lithos Carbon (Durham, North Carolina, USA): Lithos sources mine tailings containing basalt rock and applies finely crushed dust to surrounding farms, using precision science to maximize carbon removal and track CO2 uptake.
Mati Carbon (Kanpur, India): Unlike other ERW teams, Mati works with basalt from the Deccan Traps, one of the world’s largest lava flows, spreading it across smallholder rice farms to remove CO2 while supporting local agriculture.
UNDO (Stirling, Scotland): UNDO partners with quarries to scale basalt-based ERW by integrating it into existing agricultural practices—expanding deployment across farms and tracking long-term carbon storage.
Silicate (Kilkenny, Ireland): Instead of using fresh basalt, Silicate leverages fast weathering carbonate-bearing materials, such as limestone and returned concrete—creating a carbon removal solution that removes CO2 rapidly, while enhancing soil productivity and pH.
Arca (Perth, Australia): Instead of spreading crushed rock on farmland, Arca is speeding up natural mineralization at mining sites. Their autonomous rovers move across piles of mine waste, adjusting moisture and surface conditions to help the rock absorb CO2 more efficiently.
Yuanchu Technology (China): Yuanchu is pioneering Direct Air Mineralization (DAM), a process that captures CO2 directly from the air and converts it into stable, solid carbonates that remain locked away for over 1,000 years—offering a durable and scalable path to gigatonne-scale removal."
How Carbon Removal Is Preparing to Go Mainstream | SXSW
"Leading climate scientists agree carbon removal is vital for limiting global warming. While giant carbon-sucking vacuums may seem like sci-fi, the technology is real and in use today. However, the industry must scale considerably to reach its full potential. In this fireside chat, climate scientist Katharine Hayhoe and Douglas Chan, COO of Climeworks, will discuss the state of carbon removal and how we can reach a future where excess carbon is systematically removed much like other waste."
Invest in Carbon Removals | Negative Emissions Platform (Playlist)
Prof. Scott Doney | Marine Carbon Dioxide Removal | ESSICUMD
"Scenarios to stabilize global climate and meet international climate agreements require rapid reductions in human carbon dioxide (CO2) emissions, often augmented by substantial carbon dioxide removal (CDR) from the atmosphere. While some ocean-based removal techniques show potential promise as part of a broader CDR and decarbonization portfolio, no marine approach is ready yet for deployment at scale because of gaps in both scientific and engineering knowledge. Marine CDR spans a wide range of biotic and abiotic methods, with both common and technique-specific limitations. Further targeted research is needed on CDR efficacy, permanence, and additionality as well as on robust validation methods—measurement, monitoring, reporting, and verification—that are essential to demonstrate the safe removal and long-term storage of CO2. Engineering studies are needed on constraints including scalability, costs, resource inputs, energy demands, and technical readiness. Research on possible co-benefits, ocean acidification effects, environmental and social impacts, and governance is also required."
From PhD Dropout to Carbon Removal Rockstar | Ross Kenyon's Brutally Honest Climate Tech Journey | Climate Swings
"Hold onto your carbon credits! In this jaw-dropping episode of Climate Swings, host Michael Gold charts the wild rollercoaster that is Ross Kenyon's climate career—philosophy PhD dropout turned Hollywood screenwriter turned accidental climate entrepreneur extraordinaire!
Ross doesn't just spill tea—he pours the entire kettle about co-founding Nori (one of the FIRST carbon removal marketplaces), the gut-punch of watching his seven-year company flame out, and his Phoenix-like rise from the ashes as a carbon removal thought leader."
Weekly Carbon Removal Updates from 31 March - 06 April 2025 | Carbon Removal Updates Bulletin
DEADLINES
(NEW) 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
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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