The Carbon Curve

Hosted by Na’im Merchant

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Aug 2026

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The world needs to remove billions of tons of CO₂ from the atmosphere — and an entirely new industry is emerging to do it. On The Carbon Curve, Na'im Merchant explores the people, policies, and technologies driving carbon removal forward through conversations with the sector's leading voices. From policy wins and market shifts to breakthrough technologies and global perspectives, each episode unpacks what it takes to scale carbon removal to meet the enormous climate challenge. New episodes every two weeks. carboncurve.substack.com

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August 5, 202638 min

Carbon removal that utilities actually want

Episode 67 is with Dr. Joachim Katchinoff, Co-founder and CEO of CREW Carbon In this episode, Na’im speaks with Dr. Joachim “Jo” Katchinoff , co-founder and CEO of CREW Carbon , about how wastewater treatment plants can become permanent carbon sinks. Jo explains how dosing calcium carbonate into wastewater bioreactors converts microbe-produced CO2 into stable bicarbonate, why closed treatment systems make measurement far easier than open-ocean approaches, how the same intervention helps utilities remove more nitrogen and phosphorus while deferring major capital upgrades, what it takes to scale in a slow-moving regulated sector, and more. This conversation was recorded before some big news from CREW: the company just signed an offtake agreement with Microsoft for up to 23,602 durable carbon removal units — bringing CREW to more than $40 million in committed carbon removal contracts with buyers including JP Morgan, Google, Autodesk, and Stripe through Frontier. It’s a strong signal that the approach Jo describes in this episode is resonating with the market’s most demanding buyers. Na’im and Jo discuss: * Jo’s Journey From Environmental Consulting To Yale * Commercializing Alkalinity-Based Carbon Removal * How Wastewater Treatment Actually Works * Wastewater Alkalinity Enhancement Explained * MRV Advantages Of Closed Reactor Systems * Co-Benefits For Wastewater Utilities * Scaling In A Regulated, Risk-Averse Sector * What Policymakers Need To Know * CREW’s Series A And What’s Next Relevant Links: * CREW Carbon - Website * Wastewater Alkalinity Enhancement - CREW’s Approach * CREW Carbon Signs Offtake Agreement with Microsoft for Wastewater Carbon Removal * Isometric’s Certified Protocol for Carbon Removal via Wastewater * CREW Carbon and Isometric Announce the World’s First Wastewater Alkalinity Enhancement Carbon Removal Credits About Jo Katchinoff: Jo is the co-founder and CEO of CREW Carbon, a scientist with multiple patents and over a decade in environmental research and climate modeling. Jo leads CREW’s scientific strategy, partnerships, and commercialization of a novel platform that lets wastewater facilities remove and permanently store atmospheric carbon dioxide. Previously, Jo was a postdoctoral researcher and project manager at Yale, where his work on alkalinity-based carbon removal laid the scientific foundation for CREW’s platform. During his PhD at Yale’s Earth and Planetary Sciences Department, he published in journals like Nature and won the Hammer Prize for Outstanding Geologist. He was also a Marie Curie Fellow at Oxford, studying weathering and carbon dioxide removal. He holds a PhD and MPhil from Yale and a BS in Earth Science from William & Mary. About CREW Carbon: Founded in 2022 out of Yale University, CREW Carbon is a water technology company providing wastewater treatment facilities with a solution that improves performance, lowers cost, and permanently removes greenhouse gases. By dosing carbon-negative alkalinity like calcium carbonate directly into wastewater bioreactors, CREW captures biogenic CO2 as stable bicarbonate while improving biological treatment efficiency. CREW is now deployed at 10 wastewater treatment facilities across the US and Europe, has raised over $35 million in funding including a recent Series A, and holds more than $40 million in committed carbon removal contracts with buyers including Microsoft, JP Morgan, Google, Autodesk, and Stripe through Frontier. You can learn more at crewcarbon.com . This episode was made possible thanks to the generous support of the Consecon Foundation . This episode was created and published by Na’im Merchant. Episode production and content support provided by Tank Chen . Na’im Merchant is the co-founder and Executive Director of Carbon Removal Canada , a policy initiative focused on scaling carbon removal in Canada. He is on the advisory board of the Carbon Removal Standards Initiative and Terraset, and a former policy fellow with Elemental Impact. He previously ran carbon removal consulting practice Carbon Curve , and publishes The Carbon Curve newsletter and podcast . Every two weeks, Na’im will release a short interview with individuals advancing the policies, technologies, and collective action needed to scale up carbon removal around the world. Tank Chen is the Head of Content and Community at CDR.fyi , a public benefit corporation dedicated to accelerating carbon removal through transparency. He is also the co-founder of CDRjobs , a career platform for the carbon removal industry. Based in Taiwan, Tank is a carbon removal advocate focused on educating policymakers, corporate leaders, and the public on the importance of carbon removal, using data-driven insights to support communication and policy advocacy. If you enjoyed this episode, please subscribe to this podcast on your favorite podcast app or subscribe via The Carbon Curve newsletter here . If you’d like to get in touch with Na’im, you can reach out via LinkedIn . This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit carboncurve.substack.com

June 25, 202646 min

Carbon removal is not one thing

Episode 66 is with Richard Barker, Partner at Counteract In this episode, Na’im speaks with Richard Barker , a partner at Counteract , about why financing models vary widely by pathway, capex/opex profile, and deployment context. Richard highlights industrial integration opportunities, the need for team and financial readiness for long corporate timelines, how policy should set stable expectations akin to landfill tax, and more. Na’im and Richard discuss: * Richard’s Journey Into Climate Investing * Counteract’s Investment Thesis * Financing Models Evolving * CDR Pathways With Industrial Fit * Financing In Tight Markets * Preparing Startups To Scale * Lessons From Other Industries * Policy Expectations And Demand * Counteract Next Delivery Fund Relevant Links: * Counteract - Website * Counteract’s Portfolio Companies About Richard Barker: Richard is a Partner at Counteract. His varied experience spans over 35 years and working in a number of countries. He studied engineering at Oxford University, before lecturing in Economics at UCC in Ireland. After spells in strategic consulting and as Head of Strategy at ANZ Investment Bank in Australia, Richard founded and grew a number of sustainable businesses - in chemical process technology, aluminium recycling and biomethane - before moving onto the investment side about 10 years ago. He has advised a number of investors on sustainable infrastructure investment before joining Counteract. About Counteract: Founded in 2021, Counteract was the world’s first early stage investor dedicated to carbon removals. They’re a team of experienced entrepreneurs who saw a huge opportunity in an overlooked part of climate. The team has looked at over 1,000 companies on its journey to investing in 27 companies to date - diverse by both geography and CDR pathway. This, together with Counteract’s own research capability, puts it at the centre of this nascent market with unparalleled knowledge and a strong reputation within the CDR ecosystem This episode was made possible thanks to the generous support of the Consecon Foundation . This episode was created and published by Na’im Merchant. Episode production and content support provided by Tank Chen . Na’im Merchant is the co-founder and Executive Director of Carbon Removal Canada , a policy initiative focused on scaling carbon removal in Canada. He is on the advisory board of the Carbon Removal Standards Initiative and Terraset, and a former policy fellow with Elemental Impact. He previously ran carbon removal consulting practice Carbon Curve , and publishes The Carbon Curve newsletter and podcast . Every two weeks, Na’im will release a short interview with individuals advancing the policies, technologies, and collective action needed to scale up carbon removal around the world. Tank Chen is the Head of Content and Community at CDR.fyi , a public benefit corporation dedicated to accelerating carbon removal through transparency. He is also the co-founder of CDRjobs , a career platform for the carbon removal industry. Based in Taiwan, Tank is a carbon removal advocate focused on educating policymakers, corporate leaders, and the public on the importance of carbon removal, using data-driven insights to support communication and policy advocacy. If you enjoyed this episode, please subscribe to this podcast on your favorite podcast app or subscribe via The Carbon Curve newsletter here . If you’d like to get in touch with Na’im, you can reach out via LinkedIn . This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit carboncurve.substack.com

June 11, 202645 min

Is carbon removal stronger than the headlines suggest?

Episode 65 is with Luke Connell (CarbonRun), Trish Nixon (Amplify), and Brandon Vlaar (Mangrove Systems) recorded live during Toronto Climate Week For this special Toronto Climate Week wrap-up, Na’im sits down in person with three of the sharpest minds in the Toronto climate scene, each bringing a different vantage point on where carbon removal really stands. Trish Nixon (Venture Partner at Amplify Capital) brings the finance and capital side, Brandon Vlaar (CEO of Mangrove Systems) brings measurement and verification, and Luke Connell (CEO of CarbonRun) brings the supplier and operator side. A year after many feared the bottom would fall out of climate, the conversation is candid about the headwinds: a venture market that cannot scale this sector alone, a punishing “missing middle” in project finance, and an affordability lens now applied to every climate policy. At the same time, the panel makes the case that the structural foundations for a durable market are further along than the vibes suggest. It is an honest look at the valley of death ahead, and the real opportunity waiting for the companies that make it to the other side. In this episode, we discuss: * Whether the sector feels better or worse than a year ago, and why we are “over the hype cycle” * The “missing middle” in project finance, and why venture was the wrong tool to scale an infrastructure-heavy market * Canada as a safe haven for carbon removal: real advantage or comforting story? * CarbonRun’s first verified river alkalinity enhancement credits, and how audits expose optimistic models fast * The role of MRV and VVBs in reducing friction from operational activity to revenue * Consolidation ahead for a field of roughly 1,100 permanent-CDR companies, and why that can be healthy * The affordability trap, the move from “desktop to deployment,” and what success looks like five years out Guests Trish Nixon, Venture Partner, Amplify Capital. Trish is a climate-finance leader with roots in project finance and impact investing. She co-led CoPower, a clean-energy fintech, through its acquisition by Vancity, then served as Managing Director of Climate Finance at VCIB. At Amplify Capital she invests in early-stage climate and health ventures, and she also advises companies in the space, including CarbonRun. Brandon Vlaar, CEO & Co-Founder, Mangrove Systems. Brandon is a repeat founder who came up through Canadian fintech, co-founding Lending Loop, the country’s first peer-to-peer lending platform, before turning to climate. He launched Mangrove Systems in 2022, and today it builds digital MRV (dMRV) software trusted by some of the largest carbon projects in the world, spanning carbon removal, carbon capture, low-carbon fuels, and super-pollutants. Luke Connell, CEO & Co-Founder, CarbonRun. Luke is an entrepreneur whose career has bridged social impact and commercialization before he found his way to carbon dioxide removal in 2020. He now leads CarbonRun, the Nova Scotia company pioneering river alkalinity enhancement: adding finely ground limestone to acidified rivers to restore them while permanently converting atmospheric CO₂ into stable ocean bicarbonate. Under Luke, CarbonRun recently issued its first verified credits. Referenced in this episode * CarbonRun * Mangrove Systems * Amplify Capital * Carbon Removal Canada * Toronto Climate Week This episode was made possible thanks to the generous support of the Consecon Foundation . This episode was created and published by Na’im Merchant. Episode production and content support provided by Tank Chen . Na’im Merchant is the co-founder and Executive Director of Carbon Removal Canada , a policy initiative focused on scaling carbon removal in Canada. He is on the advisory board of the Carbon Removal Standards Initiative and Terraset, and a former policy fellow with Elemental Impact. He previously ran carbon removal consulting practice Carbon Curve , and publishes The Carbon Curve newsletter and podcast . Every two weeks, Na’im will release a short interview with individuals advancing the policies, technologies, and collective action needed to scale up carbon removal around the world. Tank Chen is the Head of Content and Community at CDR.fyi , a public benefit corporation dedicated to accelerating carbon removal through transparency. He is also the co-founder of CDRjobs , a career platform for the carbon removal industry. Based in Taiwan, Tank is a carbon removal advocate focused on educating policymakers, corporate leaders, and the public on the importance of carbon removal, using data-driven insights to support communication and policy advocacy. If you enjoyed this episode, please subscribe to this podcast on your favorite podcast app or subscribe via The Carbon Curve newsletter here . If you’d like to get in touch with Na’im, you can reach out via LinkedIn . This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit carboncurve.substack.com

April 30, 202644 min

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

Episode 64 is with Dr. Julio Friedmann, Chief Scientist at Carbon Direct In this episode, Na’im speaks with Dr. Julio Friedmann about Carbon Direct’s recent publication “ 5 Pillars of Successful Project Deployment and Delivery ” on what the carbon dioxide removal industry needs to de-risk projects in order to attract new buyers and to stand up infrastructure-scale carbon removal projects.In this episode, Na’im and Julio discuss: * How CDR 1.0 built markets * What buyers today really want * Overview of Five Pillars Carbon Direct outlined * Why project assurance matter * The bottleneck project management talents * Industry-led standard setting * Basics of bankable offtake agreements Relevant Links: * CDR 2.0: Five Pillars of Successful Project Deployment and Delivery - Report * 2026 State of the Voluntary Carbon Market - Report * 2026 State of the Voluntary Carbon Market - Webinar * Carbon Direct - Website * Advance Carbon Removal Coalition - Website * Quebec Surficial Mineralization Hub About Dr. Julio Friedmann: Julio is Chief scientist at Carbon Direct. He works directly with clients, the science team, and the leadership of Carbon Direct to solve major technical challenges around carbon management and CO2 removal, making clean power in products and reducing greenhouse gas emissions. Dr. Friedmann is one of the most widely known and authoritative experts in the US on carbon dioxide removal, CO2 conversion, and hydrogen industrial decarbonization and carbon capture and sequestration. He recently served as principal deputy assistant secretary for the Office of Fossil Energy at the Department of Energy, where he was responsible for doe’s r and d program in advanced fossil energy systems, carbon capture and storage, CO2 utilization, and CO2 removal. More recently, he was a senior research scholar at the Center on Global Energy Policy at Columbia. He has held positions at Lawrence Livermore National Laboratory, including Chief Energy Technologist. About Carbon Direct: Carbon Direct is a trusted energy and climate solutions company that combines world-class scientific expertise, technical rigor, and market insights to help clients achieve their business goals. Carbon Direct 70 plus scientists work closely with their finance policy and market experts to design diligence and deliver decarbonization solutions across industries. From JP Morgan Chase to Microsoft. Carbon Direct helps leading companies with carbon dioxide removal, carbon measurement from clean power opportunities and low carbon energy solutions. This episode was made possible thanks to the generous support of the Consecon Foundation . This episode was created and published by Na’im Merchant. Episode production and content support provided by Tank Chen . Na’im Merchant is the co-founder and Executive Director of Carbon Removal Canada , a policy initiative focused on scaling carbon removal in Canada. He is on the advisory board of the Carbon Removal Standards Initiative and Terraset, and a former policy fellow with Elemental Impact. He previously ran carbon removal consulting practice Carbon Curve , and publishes The Carbon Curve newsletter and podcast . Every two weeks, Na’im will release a short interview with individuals advancing the policies, technologies, and collective action needed to scale up carbon removal around the world. Tank Chen is the Head of Content and Community at CDR.fyi , a public benefit corporation dedicated to accelerating carbon removal through transparency. He is also the co-founder of CDRjobs , a career platform for the carbon removal industry. Based in Taiwan, Tank is a carbon removal advocate focused on educating policymakers, corporate leaders, and the public on the importance of carbon removal, using data-driven insights to support communication and policy advocacy. If you enjoyed this episode, please subscribe to this podcast on your favorite podcast app or subscribe via The Carbon Curve newsletter here . If you’d like to get in touch with Na’im, you can reach out via LinkedIn . This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit carboncurve.substack.com

April 16, 202641 min

Seven buyers in a trench coat

Episode 63 is with Jack Andreasen Cavanaugh Last week, Heatmap reported that Microsoft — the single largest buyer of durable carbon dioxide removal in the world, accounting for 80–90% of all purchases ever made — is pausing new CDR purchases. Jack Andreasen Cavanaugh , Director of the Carbon Management Program at Columbia’s Center on Global Energy Policy, published a piece over the weekend arguing this isn’t really a Microsoft story. The real story is that Microsoft was ever alone in the first place. In this conversation, Jack makes the case that voluntary corporate buying was never going to get us to gigatonnes, and that policy has to do the heavy lifting — just like it did for solar and wind. We get into what the next 12 months actually look like for CDR companies, why enhanced oil recovery deserves a fresh look, the limits of 45Q, and the one policy Jack would write into law tomorrow if he could. In this episode: * Why Microsoft’s dominance was a structural vulnerability, not market health — and the “seven buyers in a trench coat” problem * Governments have committed $45M to CDR purchases but spent essentially $0 * The case for enhanced oil recovery and why “greenwashing” arguments fall apart under scrutiny * Where 45Q falls short and why most CDR pathways still get no support * Why Big Tech lobbying for CDR policy may be worth more than their purchases * Jack’s dream policy: a low-carbon-intensity product standard embedded in global trade About the guest: Jack Andreasen Cavanaugh is Director of the Carbon Management Program at the Center on Global Energy Policy at Columbia University’s School of International and Public Affairs. He previously led Carbon Management Policy at Breakthrough Energy. Referenced in this episode: * Jack’s piece: “ The Private Sector Built the Market — Time for Us to Scale It ” * Heatmap’s reporting on Microsoft’s CDR pause This episode was made possible thanks to the generous support of the Consecon Foundation . This episode was created and published by Na’im Merchant. Episode production and content support provided by Tank Chen . Na’im Merchant is the co-founder and Executive Director of Carbon Removal Canada , a policy initiative focused on scaling carbon removal in Canada. He is on the advisory board of the Carbon Removal Standards Initiative and Terraset, and a former policy fellow with Elemental Impact. He previously ran carbon removal consulting practice Carbon Curve , and publishes The Carbon Curve newsletter and podcast . Every two weeks, Na’im will release a short interview with individuals advancing the policies, technologies, and collective action needed to scale up carbon removal around the world. Tank Chen is the Head of Content and Community at CDR.fyi , a public benefit corporation dedicated to accelerating carbon removal through transparency. He is also the co-founder of CDRjobs , a career platform for the carbon removal industry. Based in Taiwan, Tank is a carbon removal advocate focused on educating policymakers, corporate leaders, and the public on the importance of carbon removal, using data-driven insights to support communication and policy advocacy. If you enjoyed this episode, please subscribe to this podcast on your favorite podcast app or subscribe via The Carbon Curve newsletter here . If you’d like to get in touch with Na’im, you can reach out via LinkedIn . This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit carboncurve.substack.com

March 25, 202648 min

Why carbon removal needs a new story

Episode 62 is with Robert Höglund (Head of Climate Strategy and CDR, Milky Wire; Co-Founder, CDR FYI; CEO, Marginal Carbon). In this episode, host Na’im Merchant catches up with Robert Höglund to discuss his latest thinking on the carbon removal sector’s trajectory. Robert makes the case that CDR needs a narrative shift away from speed and scale, toward prove and learn. They explore why aviation and shipping are largely ignoring carbon removal in their decarbonization plans, why voluntary demand may outpace compliance demand for the next decade or more, and why the sector should stop treating CDR as a last resort and start positioning it as a legitimate mitigation solution alongside everything else. Key Topics: * From “Speed and Scale” to “Prove and Learn”: Focus on driving down costs, proving out methods, and nailing MRV rather than racing toward gigatons by mid-century. * Voluntary vs. Compliance Demand: Voluntary buyers, led by high-profit, low-emission sectors like tech, could remain the larger demand source for 10 to 15 years. * Aviation and Shipping’s CDR Blind Spot: Legislation like Refuel EU and Fuel EU Maritime effectively shuts out carbon removal in favor of fuel switching, reflecting an advocacy gap in international forums. * CDR Is Not a Last Resort: Carbon removal is rate-limited, not stock-limited, and should compete on cost and sustainability alongside other mitigation solutions. * The Ability to Pay: There are plenty of high-profit, low-emission companies that could be buying CDR today but aren’t yet. About Robert Höglund: Robert is the Head of Climate Strategy and CDR at Milky Wire , Co-Founder of CDR FYI , and CEO of Marginal Carbon . He writes reports for Carbon Gap and serves on several advisory groups including the EU Commission’s Expert Group on Carbon Removal and the Science Based Targets Initiative’s Expert Working Group. Relevant Links: * The carbon removal sector needs a new story — Robert Hoglund * Marginal Carbon Substack * Robert Höglund’s LinkedIn Profile * The Billion Tonne Blueprint — Carbon Removal Canada * Removals into Revenue — Carbon Removal Canada * Advance Carbon Removal Coalition This episode was made possible thanks to the generous support of the Consecon Foundation . This episode was created and published by Na’im Merchant. Episode production and content support provided by Tank Chen . Na’im Merchant is the co-founder and Executive Director of Carbon Removal Canada , a policy initiative focused on scaling carbon removal in Canada. He is on the advisory board of the Carbon Removal Standards Initiative and Terraset, and a former policy fellow with Elemental Impact. He previously ran carbon removal consulting practice Carbon Curve , and publishes The Carbon Curve newsletter and podcast . Every two weeks, Na’im will release a short interview with individuals advancing the policies, technologies, and collective action needed to scale up carbon removal around the world. Tank Chen is the Head of Content and Community at CDR.fyi , a public benefit corporation dedicated to accelerating carbon removal through transparency. He is also the co-founder of CDRjobs , a career platform for the carbon removal industry. Based in Taiwan, Tank is a carbon removal advocate focused on educating policymakers, corporate leaders, and the public on the importance of carbon removal, using data-driven insights to support communication and policy advocacy. If you enjoyed this episode, please subscribe to this podcast on your favorite podcast app or subscribe via The Carbon Curve newsletter here . If you’d like to get in touch with Na’im, you can reach out via LinkedIn . This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit carboncurve.substack.com

February 26, 202645 min

Policy wins and hard lessons as carbon removal finds its footing

Episode 61 is with Giana Amador (Executive Director, Carbon Removal Alliance), Erin Burns (Executive Director, Carbon180), and Peter Minor (CEO, Absolute Climate). In this inaugural Removers Roundtable episode, host Na’im Merchant sits down with three leaders in the carbon removal space: Giana Amador (Executive Director, Carbon Removal Alliance ), Erin Burns (Executive Director, Carbon180 ), and Peter Minor (CEO, Absolute Climate ). They discuss the current state of US carbon removal policy, industry consolidation, and the sector’s evolution from hype to maturity—emphasizing that carbon removal is playing the long game, building toward gigatonnes over decades, not years. Key Topics: * Policy Wins in Appropriations: Congress allocated $45 million for the CDR purchase pilot prize and over $70 million for RD&D at DOE, signaling bipartisan support. The DAC hubs program saw $1 billion redirected, leaving $800 million remaining. * Shift from Hype to “Prove and Learn”: The industry is transitioning to real-world deployment, with opportunities to engage communities and understand practical challenges like permitting and project finance. * Industry Consolidation: Mergers bring advantages of scale including better supplier terms and buyer confidence. * Talent and Long-term Vision: While some talent may leave as the market normalizes, the focus should be on creating durable political coalitions and maintaining strategy rather than reacting to short-term politics. Guest Bios: * Erin Burns is the Executive Director of Carbon180 , a US nonprofit focused on scaling carbon removal through equitable, science-based policy and market development. * Peter Minor is the CEO and Co-Founder of Absolute Climate and serves as a Science Advisor to the Carbon Removal Alliance. * Giana Amador is the Executive Director of the Carbon Removal Alliance , a nonprofit coalition focused on advancing carbon removal policy and market development. Relevant Links: * Noah Deich’s Substack * The carbon removal sector needs a new story - Robert Hoglund * Durable carbon removal delivers 1 million tons - Carbon Herald This episode was made possible thanks to the generous support of the Consecon Foundation . This episode was created and published by Na’im Merchant. Episode production and content support provided by Tank Chen . Na’im Merchant is the co-founder and Executive Director of Carbon Removal Canada , a policy initiative focused on scaling carbon removal in Canada. He is on the advisory board of the Carbon Removal Standards Initiative and Terraset, and a former policy fellow with Elemental Impact. He previously ran carbon removal consulting practice Carbon Curve , and publishes The Carbon Curve newsletter and podcast . Every two weeks, Na’im will release a short interview with individuals advancing the policies, technologies, and collective action needed to scale up carbon removal around the world. Tank Chen is the Head of Content and Community at CDR.fyi , a public benefit corporation dedicated to accelerating carbon removal through transparency. He is also the co-founder of CDRjobs , a career platform for the carbon removal industry. Based in Taiwan, Tank is a carbon removal advocate focused on educating policymakers, corporate leaders, and the public on the importance of carbon removal, using data-driven insights to support communication and policy advocacy. If you enjoyed this episode, please subscribe to this podcast on your favorite podcast app or subscribe via The Carbon Curve newsletter here . If you’d like to get in touch with Na’im, you can reach out via LinkedIn . This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit carboncurve.substack.com

January 8, 202655 min

A year of renewal: carbon removal in the climate pullback era

Episode 60 is a special ask me anything style episode with Na’im Merchant and Rahima Dosani In this annual “flip the script” episode of The Carbon Curve, Na’im is back in the hot seat as his wife Rahima Dosani interviews him AMA-style to reflect on the past year in carbon removal and life outside of work. The conversation starts with personal (and intentionally uncomfortable) questions—turning 40, parenting two young kids, and hard-earned life lessons—before zooming out to the state of carbon removal in 2025. Na’im shares why 2025 felt like a year of renewal at Carbon Removal Canada, what climate pullback has meant for the sector, why he’s even less patient than last year with narratives that dismiss carbon removal as a “distraction”, and the people who inspire him in the carbon removal community. In this episode, Na’im and Rahima discuss: * Turning 40: practical life lessons and hot takes * Parenting a 3.5-year-old and 1.5-year-old and why year two can feel harder than year one. * Why 2025 felt like “renewal” at Carbon Removal Canada * What climate pullback is changing: a shift from targets and rhetoric toward delivery, results, and co-benefits. * 2025 carbon removal highlights: record contracting volumes, the XPRIZE outcomes, and policy momentum in Europe * Leadership lessons and people who have inspired Na’im in 2025 Relevant links * Carbon Removal Canada and registration link for Carbon Removal Day (March 5th in Ottawa) * The Carbon Console tracking 12+ megatonnes of carbon removal projects in Canada * Tank Chen and team’s excellent work over at CDR.fyi tracking sales and deliveries * XPRIZE Carbon Removal winners Mati Carbon * Vaclav Smil white paper on physical infrastructure transition * Erin Burns Substack (Carbon180 Executive Director) * Sebastian Manhart , the CDR Policy Scoop podcast, and Gigaten Monthly newsletter * Robert Höglund on carbon removal as mitigation, not a last resort * Chris Neidl (High-Level Climate Champions) and Chris Sherwood (The Negative Emissions Platform) on getting carbon removal on the COP agenda and its own pavilion About Rahima Dosani Rahima Dosani is the Director of Strategy, Learning, and Innovation at Global Health Visions, a women-owned global health consulting firm . She previously worked at USAID’s Center for Innovation and Impact and the Clinton Health Access Initiative, with experience in Myanmar and Malawi, after starting her career in strategy consulting in New York City . Rahima holds a BA from the University of Pennsylvania, an MBA from Harvard Business School, and a Master’s in Public Health from the Harvard T.H. Chan School of Public Health . About Na’im Merchant Na’im Merchant is the co-founder and Executive Director of Carbon Removal Canada, a policy initiative focused on scaling carbon removal in Canada . He publishes The Carbon Curve newsletter and hosts The Carbon Curve podcast, exploring the people, policies, and technologies needed to scale carbon removal globally. This episode was made possible thanks to the generous support of the Consecon Foundation . This episode was created and published by Na’im Merchant. Episode production and content support provided by Tank Chen . Na’im Merchant is the co-founder and Executive Director of Carbon Removal Canada , a policy initiative focused on scaling carbon removal in Canada. He is on the advisory board of the Carbon Removal Standards Initiative and Terraset, and a former policy fellow with Elemental Impact. He previously ran carbon removal consulting practice Carbon Curve , and publishes The Carbon Curve newsletter and podcast . Every two weeks, Na’im will release a short interview with individuals advancing the policies, technologies, and collective action needed to scale up carbon removal around the world. Tank Chen is the Head of Content and Community at CDR.fyi , a public benefit corporation dedicated to accelerating carbon removal through transparency. He is also the co-founder of CDRjobs , a career platform for the carbon removal industry. Based in Taiwan, Tank is a carbon removal advocate focused on educating policymakers, corporate leaders, and the public on the importance of carbon removal, using data-driven insights to support communication and policy advocacy. If you enjoyed this episode, please subscribe to this podcast on your favorite podcast app or subscribe via The Carbon Curve newsletter here . If you’d like to get in touch with Na’im, you can reach out via LinkedIn . This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit carboncurve.substack.com

December 10, 202530 min

How will this newly launched DAC facility hold up to a Canadian winter?

Episode 59 is with Rory Brown, Co-Founder & CEO at Airhive In this episode, Na’im speaks with Rory about his journey into carbon removal technology with a focus on direct air capture (DAC). Other major themes include the importance of financing, the policy landscape for carbon removal in different regions, and the need for transparency about DAC costs. In this episode, Na’im and Rory discuss: * Rory’s transition to climate and DAC * The founding and growth of Airhive, including their technology and team * Key features and operational efficiency of Airhive’s DAC technology * The operational progress of their 1,000 tonne per year commercial demonstrator in Alberta, Canada * The main barriers to scaling DAC and how Airhive addresses these challenges * The complexity and transparency issues around the cost of DAC * Future projections and cost reduction goals for DAC technology * The benefits and opportunities of deploying DAC technology in Alberta, Canada * The role of policy in shaping the global development of carbon removal technologies * Airhive’s plans for future projects, including CO2 supply for industrial processes and further R&D advancements Relevant Links: * Airhive - Website * List of Airhive’s current and upcoming projects - Webpage * The launch of Airhive’s operation at Deep Sky Alpha - Article * More details and registration for Carbon Removal Day 2026 (in-person only) About Rory Brown and Airhive: Rory is the CEO of Airhive, which he co-founded in 2022 after nearly a decade and a half in international affairs. Airhive is a London, England-based DAC developer. Founded in 2022 by Rory and CTO Dr. Jasper Wong, Airhive are a team of 15 engineers and operators with active pilot and commercial projects in the UK, Canada, EU and Asia-Pacific. An XPRIZE Carbon Removal Finalist, they recently announced they have begun capturing CO2 from their 1,000 tonne per year commercial demonstrator at the Deep Sky Alpha facility in Alberta, Canada. This episode was made possible thanks to the generous support of the Consecon Foundation . This episode was created and published by Na’im Merchant. Episode production and content support provided by Tank Chen . Na’im Merchant is the co-founder and Executive Director of Carbon Removal Canada , a policy initiative focused on scaling carbon removal in Canada. He is on the advisory board of the Carbon Removal Standards Initiative and Terraset, and a former policy fellow with Elemental Impact. He previously ran carbon removal consulting practice Carbon Curve , and publishes The Carbon Curve newsletter and podcast . Every two weeks, Na’im will release a short interview with individuals advancing the policies, technologies, and collective action needed to scale up carbon removal around the world. Tank Chen is the Head of Content and Community at CDR.fyi , a public benefit corporation dedicated to accelerating carbon removal through transparency. He is also the co-founder of CDRjobs , a career platform for the carbon removal industry. Based in Taiwan, Tank is a carbon removal advocate focused on educating policymakers, corporate leaders, and the public on the importance of carbon removal, using data-driven insights to support communication and policy advocacy. If you enjoyed this episode, please subscribe to this podcast on your favorite podcast app or subscribe via The Carbon Curve newsletter here . If you’d like to get in touch with Na’im, you can reach out via LinkedIn . This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit carboncurve.substack.com

October 23, 20251 hr 10 min

The carbon market's original sin

Episode 58 is with Marc Roston (Stanford’s Precourt Institute for Energy) and Peter Minor (Absolute Climate) This episode features Marc Roston , senior research scholar at Stanford’s Precourt Institute for Energy, and Peter Minor , co-founder of Absolute Climate. They explore fundamental flaws undermining voluntary carbon markets, focusing on how carbon credits are accounted and valued. Mark explains challenges like the “original sin” of credit retirement, custody issues, and fungibility differences among carbon removal types. Together, they discuss a new concept of carbon delivery companies as long-term counterparties to enhance accountability and trust. The dialogue highlights the urgent need to align carbon market practices with the realities of durable climate impact and robust financial frameworks. In this episode, Na’im, Peter, and Marc discuss: * The problems with current carbon accounting and credit retirement; * The distinction between emissions reductions and carbon removals; * The concept of carbon delivery companies and long-term liabilities, and the need for fungibility in carbon credit markets; * Solutions for aligning short-term and long-term carbon liabilities; * Emission liability management as a core concept to improve carbon markets * The necessity of differentiating between avoidance and removal credits in trading markets * Experimentation in policy and trading to create a reliable market infrastructure for carbon removal Relevant links: * The Market That Won’t Trade: Fixing Structural Failures in the Spot Market for Carbon Removals - Paper * What’s next after carbon accounting? Emissions liability management - Paper Accounting for Climate Change - Article * Sustainable Finance Initiative - Website * Absolute Climate - Website About Marc: Marc Roston is a Senior Research Scholar at the Precourt Institute for Energy in the Stanford Doerr School of Sustainability where he leads research efforts in carbon accounting and carbon markets, financial institution transitions and climate-related insurance markets. He’s also a Senior Fellow at the E-ledgers Institute, where he’s been helping to define the concept of E-liabilities. Prior to joining Stanford in 2020, Roston spent 25 years in the asset management industry where he held senior investment positions in quantitative finance, private equity, and advisory services. He earned a PhD in Economics from the University of Chicago and a B.S. in Economics at Carnegie Mellon University. About Peter: Peter Minor is a co-founder of Absolute Climate, which is building independent standards that apply universal assessment criteria to all CDR pathways. A veteran of the carbon removal industry, he previously served as the Director of Science & Innovation at Carbon180. While there, he contributed to the development of key programs like the DOE Regional DAC Hubs, and pioneered core principles required for high-accountability MRV. A UC Berkeley Mechanical Engineering PhD by training, he applies his expertise in sensors, numerical modeling, and carbon removal science towards building the MRV solutions needed to unlock gigaton scale. This episode was made possible thanks to the generous support of the Consecon Foundation . This episode was created and published by Na’im Merchant. Episode production and content support provided by Tank Chen . Na’im Merchant is the co-founder and Executive Director of Carbon Removal Canada , a policy initiative focused on scaling carbon removal in Canada. He is on the advisory board of the Carbon Removal Standards Initiative and Terraset, and a former policy fellow with Elemental Impact. He previously ran carbon removal consulting practice Carbon Curve , and publishes The Carbon Curve newsletter and podcast . Every two weeks, Na’im will release a short interview with individuals advancing the policies, technologies, and collective action needed to scale up carbon removal around the world. Tank Chen is the Head of Content and Community at CDR.fyi , a public benefit corporation dedicated to accelerating carbon removal through transparency. He is also the co-founder of CDRjobs , a career platform for the carbon removal industry. Based in Taiwan, Tank is a carbon removal advocate focused on educating policymakers, corporate leaders, and the public on the importance of carbon removal, using data-driven insights to support communication and policy advocacy. If you enjoyed this episode, please subscribe to this podcast on your favorite podcast app or subscribe via The Carbon Curve newsletter here . If you’d like to get in touch with Na’im, you can reach out via LinkedIn . This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit carboncurve.substack.com