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TABLE OF CONTENTSNote: 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 HIGHLIGHTSTENCENT UNVEILS CARBONX 2.0 FINALISTS Tencent named 50 global finalists for its CarbonX 2.0 program, offering $28 million to scale innovations in carbon removal, CCUS, and energy storage, bridging the gap from research to real-world deployment.REWIND LAUNCHES WORLD’S FIRST DEEP MINE CARBON STORAGE PROJECT Rewind has launched DMS Georgia, the world’s first commercial deep mine carbon storage project. The initiative stores waste biomass like sawdust in oxygen-free mine chambers, preventing decomposition and locking carbon for millennia. Rewind aims to sequester 50,000 tonnes of CO₂e annually by 2027, offering a durable, low-energy alternative to traditional carbon capture.G20 LAGGING ON CDR, OXFORD REPORT WARNS A new report from Smith School of Enterprise and the Environment at University of Oxford reveals that G20 nations lack credible carbon-removal commitments alongside emissions cuts. Current pledges amount to only 214-265 MtCO₂ of removal by 2030, far below the 7-9 GtCO₂ annual removals science says are needed by mid-century.NORTHX BACKS FOUR CANADIAN CDR VENTURES Climate action catalyst NorthX (previously known as the B.C. Centre for Innovation and Clean Energy (CICE)) announced an investment of ~US$2.4 million (CA$3.4 million) in four CDR ventures operating in Canada. The four funding recipients are CarbonRun, Skyrenu Technologies, NULIFE Greentech, and pHathom Technologies.REAL-TIME DEEP OCEAN CARBON TRACKING Monterey Bay Aquarium Research Institute (MBARI) has developed SINKER, an innovative instrument with advanced microscopes and cameras that track marine snow in real time, revealing how the deep ocean stores and transports carbon.CALL FOR CONSULTATIONS Carbon to Sea released a draft of the first comprehensive Ocean Alkalinity Enhancement Environmental Impact Monitoring Framework, co-developed with PML Applications. Public comments are open until December 12, 2025.REPORT Governments should jointly design and develop a global advance market commitment to accelerate carbon removal funding and deployment, according to a new paper by RMI.Read on to unpack more updates: COMMERCIAL NEWS Share RESEARCH PAPERSAuthors: Matthew Oliver Clarkson, Mariane Chiapini, Marcella Daubermann, Veronica Furey, Suzi Huff Theodoro, et al.Synopsis: This study argues that gigatonne-scale carbon removal by 2040 requires system-change interventions rather than linear growth. In Brazil, Enhanced Rock Weathering can remove CO₂ while improving soils, boosting nutrient efficiency, and reducing synthetic fertilizer dependence, delivering community and ecosystem benefits. Strong research capacity, a coordinated movement, and a pioneering legal framework create enabling conditions. Regional hubs and feedstock valorization could activate positive feedbacks, accelerating a sustainable agronomic transition with Gt-scale CDR potential.
Authors: Julie Ingram, Rhian Brimble, Jane MillsSynopsis: This study examines how discourse and discursive power among UK stakeholder groups shape the Social License to Operate for BECCS. Analysis of organisational statements, interviews, and a workshop reveals polarized narratives rooted in concerns over fairness, governance confidence, and trust. Overcoming power struggles requires deliberative engagement that accommodates diverse values, plus adaptability across actors. Because SLO is intangible and dynamic, shared responsibility and responsive governance are essential for BECCS legitimacy in achieving net zero.
Authors: Xiao-Yu Jin, Long CaoSynopsis: This study compares ocean iron fertilization (OIF) and artificial ocean alkalinization (AOA) using an Earth system model under RCP8.5. By 2100, OIF boosts ocean CO₂ uptake by 120 PgC and lowers atmospheric CO₂ by 55 ppm, mainly in HNLC regions, but slightly acidifies deep waters and reduces ocean oxygen. AOA achieves similar atmospheric CO₂ reduction while mitigating acidification with minimal oxygen impacts.
Authors: Taian Lu, Thomas S. Bianchi, Michael R. Shields, Naishuang Bi, Xiao Wu, Limin Hu, Xiaoyan Ning, Houjie WangSynopsis: This study quantifies biospheric and petrogenic organic carbon burial in the Yellow River Delta using geomorphology and carbon isotopes. Results show exceptionally high biospheric OC burial—up to 70× the global marginal sea average, alongside substantial petrogenic inputs. By comparing global deltas, the work highlights deltas as major carbon sinks and stresses the need to distinguish carbon sources when evaluating their influence on atmospheric CO₂.
Authors: Richard Schinteie, Veena Nagaraj, Linda Stalker, Nai Tran-Dinh, David MidgleySynopsis: This perspective examines microbially induced carbonate precipitation as a potential CO₂ removal pathway, highlighting the diverse microbial metabolisms that drive mineral formation and pH changes. It stresses that carbonate stability, respiratory CO₂, nutrient-related emissions, and transient organic carbon must be considered to assess true sequestration. Lifecycle impacts vary widely, so optimizing MICP requires integrated evaluation of microbial physiology, environmental conditions, and process emissions to enable durable, viable carbon removal.
Authors: M.M. Paulsen, S.G.R. Nielsen, F.J. Tilsted, T.H. PedersenSynopsis: This study evaluates solid calcium looping for large-scale CO₂ removal, examining carbonation kinetics across humidity, temperature, and slaking ratios. High humidity (>70 %) and moderate temperatures accelerate uptake, with stable performance over repeated cycles. A 1 Mt/yr unit requires 4.9–6.2 GJ t⁻¹ CO₂ and 0.7 t water t⁻¹ CO₂, with area needs reduced by stacked trays. Northern Europe currently offers suitable grid and climate conditions. Findings indicate strong potential, contingent on siting, logistics, and real-world implementation.
Authors: Gaël Mariani, Jérôme Guiet, Daniele Bianchi, Tim DeVries, Nicolas Barrier, Marc Troussellier & David MouillotSynopsis: This study uses a marine ecosystem model to show warming reduces macrofauna biomass and carbon export, with a 13.5% export decline by 2100 under SSP5-8.5. Fishing amplifies losses by up to 56.7%, creating a 14.6 ± 10.3 GtC sequestration deficit, though long-term storage persists. Each 1% biomass loss cuts export by 0.8%. Restoring commercial stocks could deliver carbon benefits similar to mangroves, but high uncertainty limits their current role in Nature-based Climate Solutions.
Authors: Ivy Frenger, Svenja Frey, Andreas Oschlies, Julia Getzlaff, Torge Martin, Wolfgang KoeveSynopsis: Using an Earth system model, this study examines a scenario of sustained net-negative emissions following CO₂-driven warming. After centuries of gradual cooling, a deep Southern Ocean heat release triggers a multi-decade global surface temperature increase of several tenths of a degree, largely decoupled from atmospheric CO₂. Minimal carbon is co-released due to seawater chemistry. This “heat burp” disrupts the assumed linearity between cumulative emissions and warming, highlighting uncertainties in long-term ocean heat and carbon storage under net-negative pathways.
Authors: Zoë Sabrina Welch, Sylvia Minjee Kim, Michael Liu, An Bui, Jesse Grigolite, Janice L. Jones and Maria Débora Iglesias-RodriguezSynopsis: A lab experiment tested brucite-inspired alkalinity addition on spring upwelling seawater, raising total alkalinity from ~2300 to ~3000 µmol/kg. The treatment shifted phytoplankton composition, reducing diatoms and increasing Prymnesiophyceae, with lower biogenic silica. Particulate inorganic carbon rose but not significantly, while organic carbon, nitrogen, and photosynthetic health stayed similar. Results indicate differential effects on phytoplankton functional groups and biogeochemical performance.
Authors: Rahim Boylu, Matheus Strobel, Mustafa Erguvan, Shahriar AminiSynopsis: This study examines humidity effects on microwave-assisted Direct Air Capture using Zeolite 13X. Experiments across 25–75% relative humidity and varied adsorption pathways showed that appropriate routes can reduce roll-up effects and improve CO₂ purity, productivity, and energy demand. Microwave desorption enabled rapid, uniform heating from 33–100 °C, but repeated cycling caused severe sorbent degradation (>90%), highlighting durability challenges for humid DAC operation.
Authors: Lanlan Zhang, Kai Han, Yongzhen Wang, Yibo Han, Tao Cui, Yuyao XiaSynopsis: This study examines how carbon capture and utilization/removal technologies interact with the EU ETS carbon price using detrended time series. Results show positive links between coal prices, BECCS/BECCU turnover, and carbon prices, indicating supportive market forces. Findings highlight policy needs to refine carbon pricing and improve long-term decarbonization effectiveness.
Authors: Maria S. Kasidoni, Konstantinos P. Christopoulos & Maria D. LoizidouSynopsis: This study analyzes how CCU and CDR technologies influence EU ETS carbon prices using detrended time series of energy stocks and technology turnover. Results show positive links between coal prices, BECCS/BECCU activity, and carbon prices, suggesting supportive market dynamics. Findings highlight policy needs to refine carbon pricing and strengthen long-term decarbonization, offering guidance for the ongoing revision of the EU ETS.
Authors: Kechen Lyu & Zhengjun LiSynopsis: This study uses PLUS and InVEST models to assess how land-use change in Shandong Province affected carbon storage and habitat quality from 2000–2020, and projects outcomes for 2030. Urban expansion reduced farmland, forests, carbon storage, and habitat quality, increasing ecological fragmentation. Scenario results show ecological conservation could improve both metrics, while natural development worsens them. Findings stress balancing development with ecosystem protection through zoning, compensation, and ecological corridors.
Authors: Mattia Galanti, Kiia Kaaresvirta, Ivo Roghair, Martin van Sint AnnalandSynopsis: This work builds a detailed model of steam-assisted temperature–vacuum swing adsorption for Direct Air Capture, integrating humidity-aware thermodynamics, realistic auxiliary equipment, wall-driven regeneration heat transfer, and explicit oxygen-purity limitations. Benchmarking shows that ignoring condenser energy or purity constraints leads to overly optimistic feasibility predictions. The pre-heating requirement becomes the dominant bottleneck across designs. By varying adsorber aspect ratios, an optimal region emerges balancing improved heat transfer in flatter geometries against increased pressure drop in longer beds. Minimum-work envelopes demonstrate the advantages of steam injection for desorption efficiency. The findings emphasize that addressing these constraints can significantly enhance DAC scalability.
Authors: Al Jay Lan J. Alamin, Melquezedec James T. Cruz, Bryan S. Hernandez, Eduardo R. MendozaSynopsis: Direct Ocean Capture is modeled using chemical reaction network theory to assess long-term carbon removal impacts. The analysis identifies conditions for positive steady states, reveals multistationarity linked to tipping points, and finds pools with concentration robustness. DOC’s reduction capability is evaluated and compared with an existing DAC model, including integrated deployment, highlighting complementary roles and constraints for climate mitigation.
Authors: Hafiz Usman Ghani, Anniina Lehtilä, Anna Forssén, Xing Liu, Ilkka LeinonenSynopsis: This study uses life-cycle assessment to evaluate land-use and land-use-change emissions and removals of harvested wood in Finland under alternative forest management practices. Modeling across species and regions shows that reduced thinning with longer rotations yields the greatest carbon removals and lowest land occupation (except birch). Residue collection causes small soil-carbon losses but minimally affects overall climate impact. Results highlight how regional, species, and management differences shape forest-based CO₂ removal outcomes.
Authors: Zongzhu Chen, Xiaorong Jiang, Xiaoyan Pan, Yiqing Chen, Jinrui Lei, Tingtian Wu, Xiaohua Chen, Yuanling Li, Tiezhu ShiSynopsis: This study analyzes carbon storage trends in China’s Hainan Tropical Rainforest National Park using a PLUS-InVEST model integrating natural and socioeconomic factors from 1980–2020 and projecting to 2035. Forest expansion and loss of grassland and arable land drove recent increases after earlier declines, with notable spatial variation in eastern high-altitude regions. Ecological protection policies limit built-land growth and boost sequestration, yielding higher projected carbon stocks than natural or tourism development, underscoring the need to align economic goals with strong conservation.
Is solid calcium looping a scalable technology for mega-ton carbon dioxide removal? (Source)Hypothesized mechanisms of climate change and fisheries impacts on marine macrofauna biomass and carbon export (Source)WEB POSTSREPORTSThe global distribution of CO2-reactive rocks compared to the location of sedimentary basins (Source)Share Carbon Removal Updates UPCOMING EVENTSNovember 2025December 20252026We 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. Carbon Removal Events Calendar Add our Carbon Removal Events Calendar to your default calendar in 2 ways: Head to this link: https://teamup.com/kshqbfhrqkw36sxymd Sync specific event: Click the event → menu (≡) → Share → choose your calendar → Save. Or sync all events: Menu (≡) → Preferences → iCalendar Feeds → Copy URL → Add to your calendar settings → Subscribe. JOB OPPORTUNITIES“CEEZER is the leading partner for carbon credit procurement and management, empowering organizations to transform climate ambition into a clear path to net-zero.”
TerraFixing’s mission is to scale Direct Air Capture by harnessing the unique conditions of the Far North, while supporting local communities on the frontlines of climate change.”
“The University of Chicago invites applications from scholars who will make significant contributions to Climate Systems Engineering. The University is building a world-leading Climate Systems Engineering initiative (CSEi) with multiple faculty hires addressing solar geoengineering, open-system carbon removal such as enhanced weathering, and interventions to limit loss of glacial ice. We seek individuals who will lead research programs that will produce significant contributions to their field and to this research initiative.”
“Octavia Carbon is the Global South’s first Direct Air Capture (DAC) company, dedicated to combating climate change by removing carbon dioxide from the atmosphere.”
“UNDO is tackling the greatest challenge of our time: climate change. We are a fast-growing for-profit business that is already one of the biggest carbon removal companies in the world. But this is only the start - we have ambitious plans aligned with great funding, excellent people and an inclusive team.”
“STRATOS is on track to become the world’s largest Direct Air Capture facility. Currently under construction, it is designed to capture up to 500,00 tons of atmospheric CO2 annually and is expected to be commercially operational in mid-2025. Oxy subsidiary 1PointFive will own the facility, with OxyChem responsible for its operation and maintenance.”
“Slíglas is an Irish Carbon Dioxide Removal (CDR) start-up on a mission to permanently remove carbon from the atmosphere by transforming residual biomass into biochar.”
“Meta builds technologies that help people connect, find communities, and grow businesses.”
“Yama is tackling the greatest challenge of our time: Climate Change. Our mission is to congrubte removing 1 billion tons of CO2 by 2050 through the development of the most energy-efficient and scalable Direct Air Capture (DAC) technology.”
“Thalo is transforming the HVAC industry with next-generation sensing and AI-powered intelligence. Our AI-powered platform transforms static assets into self-monitoring, high-performance systems, empowering technicians to shift from reactive fixes to proactive service.”
“Octavia Carbon is the Global South’s first Direct Air Capture (DAC) company, dedicated to combating climate change by removing carbon dioxide from the atmosphere.”
Looking for your dream job in CDR? There are 620 jobs available *right now*: check them all out at: CDRjobs Board
PODCASTSHoovering up the sky: CEO of Canadian direct air capture company touts emissions solution | The Newsroom by DOB Energy | Hoovering up the sky: CEO of Canadian direct air capture company touts emissions solution The Newsroom by DOB Energy 36:05 |
“On today’s episode of The Newsroom, Deep Sky CEO Alex Petre joins DOB Energy reporter Josh Skapin.Deep Sky, a Montreal-based carbon removal project developer, aims to remove gigatons of carbon from the atmosphere and permanently store it underground.Petre will discuss the potential impact of direct air capture, its costs, policy measures, carbon markets, and her company’s new Deep Sky Alpha facility.Background reading:Deep Sky has selected Manitoba as the location of its next commercial carbon removal facility, Deep Sky Manitoba.Deep Sky’s Alberta direct air capture facility is operational‘Actual’ direct air capture costs closer to $1,000 a tonne, says Deep Sky CEO.”
What’s next for CDR in aviation & shipping - with Robert Höglund | The CDR Policy Scoop | What's next for CDR in aviation & shipping - with Robert Höglund The CDR Policy Scoop 28:38 |
“The IMO just paused its carbon price: What’s next for shipping, and will aviation follow suit?Just months after the world celebrated the first-ever global carbon price for the maritime sector, the International Maritime Organization (IMO) has now suspended it for one year.This came as a result of heavy pressure from the U.S., with smaller countries reportedly threatened with tariffs, sanctions, and even visa restrictions for UN staff.Shipping and aviation are two of the hardest to decarbonise sectors, which most necessitate clear regulation and - potentially - the use of carbon dioxide removal (CDR).So where does that leave us? What are the policy opportunities - national, regional, and global - that we should be focusing on to tackle hard-to-abate emissions in these two sectors? And is climate multilateralism dead?In this CDR Policy Scoop, the one and only Robert Höglund joins co-host Sebastian Manhart to unpack these questions and make sense of the mess we just witnessed.”
The Carbon Paradox: Saving the planet was never meant to be simple - with Renat Heuberger | The CDR Policy Scoop | The Carbon Paradox: Saving the planet was never meant to be simple - with Renat Heuberger The CDR Policy Scoop 28:16 |
“We all know that climate change is the greatest challenge of our generation, and for many of us, it’s our life’s work. If you’re like us, you spend most of your reading time on non-fiction - whether that’s endless reports, briefs, news, and feeds.We have a refreshing new way to digest some of the heaviest topics in this climate fight.The Carbon Paradox is a fictional book based on facts. Along the way, the characters meet 25 paradoxical issues, which cover the entire controversy from carbon credits to climate finance. And learn why carbon markets will never be perfect.We’re delighted to uncover some of these paradoxes with author Renat Heuberger, CEO at Terra Impact Ventures. Renat is a Swiss climate activist, serial entrepreneur, and impact investor who has spent two decades at the forefront of the VCM.Join co-hosts Eve Tamme and Sebastian Manhart as they dive into some of their favourite climate paradoxes with Renat.”
YOUTUBE VIDEOSCarbon Removal: A Deep Dive into the Methods (Featuring B. B. Cael) | UChicago Climate Systems Engineering initiative “B. B. Cael details approaches to carbon removal, including ocean alkalinity enhancement, land-based methods, bioenergy with carbon capture, and direct air capture with storage.”
A Down-To-Earth Climate Solution? Enhanced Rock Weathering at Sierra Foothill REC | UC Agriculture and Natural Resources “Toby O’Geen, a UC Cooperative Extension specialist and soil science professor at UC Davis, is working with colleagues on a first-of-its-kind study to comprehensively measure the carbon sequestered by enhanced rock weathering at UC ANR’s Sierra Foothill Research and Extension Center.”
How MBARI scientists are studying the ocean’s carbon flux in real time | MBARI (Monterey Bay Aquarium Research Institute) ”The ocean is Earth’s most significant carbon sink, quietly transporting vast amounts of carbon from the surface to the deep sea. Yet, a big part of the ocean’s carbon calculus still remains a mystery: How much carbon do sinking bits of organic material lock away in the deep sea?MBARI scientists and engineers have developed SINKER, the SINKing Ecology Robot, an innovative deep-sea instrument that observes how carbon-rich particles, known as marine snow, sink through the ocean in real time. Equipped with advanced cameras and sensors, SINKER captures continuous images of these tiny, drifting particles, helping researchers understand what, when, and how much carbon is sinking to the seafloor.”
2025 North American Biochar Conference - Playlist | US Biochar Initiative“The 2025 North American Biochar Conference took place September 15-18, 2025 in Minneapolis, Minnesota. Views and Representations: The views and opinions expressed in USBI videos or by any guest speakers, partners, sponsors, or contributors do not necessarily reflect those of USBI.”
Brian Borkowicz & Noah Pechatsko: Biochar Innovation and the Future of Tree Care | Biochar Today “In this episode of the Biochar Show, host John Webster engages with Brian Borkowitz and Noah Pechatsko from Davy Tree, discussing their passion for trees, the importance of urban resilience, and the role of biochar in sustainable tree care. They explore the challenges of biomass management, customer satisfaction, and the benefits of incorporating biochar into soil health and plant performance. The conversation also delves into the operational aspects of building a biochar facility, the significance of carbon credits, and the future of biochar in the market. The episode concludes with a focus on the commitment to environmental responsibility and the potential for biochar to contribute to a sustainable future.”
The Shift Ep. 1— Biochar 3.0 with Kathleen Draper | Myno Carbon “In the first episode of The Shift, host Thor Kallestad (CEO of Myno Carbon) sits down with Kathleen Draper, Emeritus Chair of the International Biochar Initiative and U.S. Director of the Ithaka Institute who is one of the original pioneers in the biochar movement. Together, they explore how this ancient material is reshaping modern carbon removal, land recovery, and climate resilience.”
Beyond Carbon: Healthy Oceans and Forests Could Be Key to Climate | Climate Emergency Forum “Join Prof Jem Bendell, pioneering thinker behind Deep Adaptation, as he tackles the urgent need for forest conservation, ocean health, and climate resilience in this thought-provoking video. Discover why protecting and restoring large forests and revitalizing our oceans are the new frontlines in fighting climate change, and how strategies like assisted tree migration can help safeguard our planet’s biodiversity against rapid environmental shifts.”
Climate Politics When It’s Too Late with Wim Carton | Climate Chat “In this Climate Chat episode, we interview author and professor Wim Carton about his new book, co-authored with Andreas Malm, titled: “The Long Heat: Climate Politics When It’s Too Late.” The book focuses on climate adaption, negative emissions, and solar geoengineering and critiques them for being used as excuses to avoid rapid emissions reduction.”
This Carbon‑Capture Device Recharges Itself — NORMA’s Supercapacitor DAC | Bite-Size Climate Tech “In this episode of Bite‑Size Climate Tech, we chat with Dr. Silvia Pugliese, co‑founder and CTO of Norma, to hear how her team is reinventing direct air capture.Norma’s approach uses supercapacitors—energy‑storage devices similar to those that power electric buses—to “charge up” and capture CO₂. Instead of wasting energy, their system stores and re‑uses the energy required to capture carbon, making it dramatically more efficient and scalable.”
What’s Hot in Carbon Removal - October 2025 | AirMiners Understanding Additionality in Carbon Removal: Definitions, Challenges, and Real-World Solutions | Puro • earth “Puro.earth and Boundless Impact hosted an insightful webinar exploring additionality—a foundational principle for credible carbon removal projects.The session examined what additionality means, why it is critical for ensuring real climate benefits, and how it is evaluated both technically and within leading standards. The webinar offered practical guidance on demonstrating additionality in line with Puro.earth’s methodologies.”
Top 10 Forest Carbon Sinks: India vs. US and China | Global Carbon Sequestration “Discover the top 10 countries with the largest forest carbon sinks in 2021-2025! In this video, we explore the global efforts to combat deforestation and its impact on our planet. With Russia, China, and the USA leading the way, we delve into the annual carbon removals and emissions of these nations. But where does India stand in this crucial ranking?Uncover the fascinating insights into each country’s contribution to carbon sequestration and their role in preserving our forests. Learn about the net forest conversion emissions of Brazil, the Democratic Republic of Congo, and Peru, and how they compare to the top carbon sinks.”
What is Current State of CO2 Removal and What are the Future Prospects? | Murtugudde Climate Academy Why Buyers Are Choosing Mineralization Carbon Removals | Carbonplace “Carbonplace hosted an exclusive webinar on “Why Buyers Are Choosing Mineralization Carbon Removals” featuring insights from Google, Oliver Wyman, and Artemeter.”
Weekly Carbon Removal Updates from 27 October - 02 November 2025 | Carbon Removal Updates BulletinDEADLINESFollow us on:Twitter | Bluesky | LinkedIn | YouTube | Substack | Podcast 1 | Podcast 2
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