

Reversing Climate Change
Carbon Removal Strategies LLC
Reversing Climate Change is a podcast that bridges science, technology, and policy with the richness of the humanities. From the forefront of carbon removal and climatetech to explorations of literature, history, philosophy, theology, and geopolitics, we dive deep into the people, ideas, and innovations shaping a better future for the planet and its inhabitants.
If you love the show, please become a paid subscriber on Spotify.
If you love the show, please become a paid subscriber on Spotify.
Episodes
Mentioned books

Jan 29, 2026 • 58min
384: Graphyte's Strategy Is a Masterpiece of Simplicity—w/ Barclay Rogers & Hannah Murnen
So many people think they need to dream up wild new tech to be successful at carbon removal. But one of CDR's most ascendent companies is relentlessly simple. They're so linear that I scrambled to make sure I wasn't missing something... In fact, if you've ever received coaching from me about simplicity, this is where I'm sending you from now on.I recently completed Noah Deich and Dr. Jen Wilcox's UPenn continuing education course, CDR Executive Education Program/Purchasing Carbon Removal Credits. It was wonderful and I highly recommend it.It did require a few homework assignments and a group project based upon a project developer. I chose Graphyte and their work putting waste biomass into bricks, wrapping them in polymer, and burying them underground. This is part of the class of projects called BiCRS (pronounced "bikers"), or Biomass Carbon Removal and Storage.Today's show has Dr. Hannah Murnen, Graphyte's CTO, and Barclay Rogers, Graphyte's Co-Founder and CEO, on to correct my homework from the course. I've never had a show quite like this.My sincere respect to each of them for digging into this with me and sharing their numbers. Not everyone in CDR is willing or able to do that, and I'm so happy we got to do that together.This show also inspired me to make an episode about linearity vs. holistic thinking in CDR. If one focuses on carbon efficiency, Graphyte makes so much sense. But are we optimizing only for solving climate change, or is this a polycrisis that requires a much deeper and interconnected approach? What you choose may say just as much about your values and how you perceive the problem. Stay tuned...This Episode's SponsorPhilip Lee LLP: legal resources for carbon removal buyers and suppliersListen to the RCC episode with Ryan Covington from Philip Lee LLPResourcesBecome a paid subscriber of Reversing Climate ChangeSubscribe to the Reversing Climate Change Substack"381: Carbon Removal's False Peak as Mapped by Noah Deich"S2E25: The DAC-up plan for climate change—w/ Dr. Jen Wilcox of Worcester Polytechnic Institute"GraphyteGraphyte's page on its registry, IsometricThe 2024 Project Design Document (PDD) for Graphyte's Loblolly projectUPenn's Purchasing Carbon Removal Credits courseCDR Executive Education ProgramCarbon efficiency is how much of the carbon remains after the source material has been converted into a form of carbon removal, e.g. Graphyte loses very little carbon back to the atmosphere between waste biomass, processing, and burial. Biochar has a lower carbon efficiency because more carbon is released during pyrolysis. It isn't the only factor that matters, but has major repercussions for calculating net removals and which project types are suitable for which goals.PolycrisisI had to dig to figure out where I got the Nintendo insight from, but it originates from Richard Rumelt's Good Strategy Bad Strategy: The Difference and Why It Matters.

Jan 20, 2026 • 1h 3min
383: The Biochar Company Owned by a Data Center Company Owned by Private Equity—w/ Alastair Collier, A Healthier Earth
Alastair Collier, Chief R&D Officer at A Healthier Earth, shares his expertise in biochar project development. He discusses why biochar is a better fit for private equity than venture capital, emphasizing the need for developers to focus on conventional business metrics. Alastair also covers the challenges of financial structuring, the importance of clear unit economics, and the need for scalable, repeatable projects. His insights into negotiating with private equity and building robust financial cases make for a compelling conversation for anyone in carbon removal.

Jan 15, 2026 • 60min
382: Silicates vs. Carbonates: How the 1996 IPCC Report Created Enhanced Rock Weathering Path Dependency—w/ Dr. Tyler Kukla, CarbonPlan
Some decisions we don't expect to have big consequences. And yet, sometimes you wake up thirty years later in a world deeply altered by that little moment. Today's show is about when that happens in science.Dr. Tyler Kukla is a Research Scientist at CarbonPlan, one of carbon removal's preeminent watchdog nonprofits. He returns to the show to explore how a conservative estimation of how much carbon returns to the atmosphere after agliming with carbonate rock (all of it) in the 1996 IPCC report has led us into a commercial carbon removal future that focuses almost entirely on silicate rock.This isn't a story about whether silicates or carbonates are better for enhanced weathering (it really depends upon a number of geographic factors and design decisions around system boundaries and additionality), but about how some good faith placeholders can reify to such an extent that they do so much more than they were ever expected to.This Episode's SponsorPhilip Lee LLP: legal resources for carbon removal buyers and suppliersListen to the RCC episode with Ryan Covington from Philip Lee LLPResourcesBecome a paid subscriber of Reversing Climate ChangeSubscribe to the Reversing Climate Change SubstackRevised 1996 IPCC Guidelines for National Greenhouse Gas Inventories"Scaling enhanced weathering in limed fields" by Tyler Kukla"Evidence for carbon sequestration by agricultural liming" by Dr. Stephen K. Hamilton, et al"The contribution of agricultural lime to carbon dioxide emissions in the United States: dissolution, transport, and net emissions" by Drs. Tristam O. West & Allen C. McBride"Contribution of agricultural liming to riverine bicarbonate export and CO2 sequestration in the Ohio River basin" by Drs. Neung-Hwan Oh & Peter A. Raymond"Farming with crops and rocks to address global climate, food and soil security" by Dr. David J. Beerling, et alSilicatesCarbonatesAgricultural lime (aglime)Path dependence

Jan 9, 2026 • 54min
381: Carbon Removal's False Peak as mapped by Noah Deich
Noah Deich, a leader in carbon removal and the founding executive director of Carbon180, explores the complexities of scaling carbon removal efforts. He discusses his work with the Stripe Climate Fellows to create government-focused market commitments. The conversation delves into the need for credible demand signals from governments to attract investment, the challenges posed by national interests, and the delicate balance between free trade and domestic industry building. Noah also highlights the risks of supply outpacing demand and the pivotal role of policy in driving carbon removal solutions.

Jan 2, 2026 • 42min
380: Ezra Klein's Abundance vs. Paul Kingsnorth's Machine—Wizards & Prophets All the Way Down...
The perennial fight returns... In one corner, there are the wizards: optimists who are betting that technology and economic growth can solve our problems faster than it can create them? In the other corner, prophets: who believe we have deeply lost in our way in ignoring limits and that we need to get ourselves back to the garden.How much wizard and how much prophet do you have contained in your own heart?Today's monologue episode has host Ross Kenyon exploring two recent books: Ezra Klein & Derek Thompson's Abundance, and Paul Kingsnorth's Against the Machine: On the Unmaking of Humanity, regarding how they continue the oldest and deepest fight in environmentalism.This Episode's SponsorsAbsolute Climate: the only standard that’s developed independent of registriesPhilip Lee LLP: legal resources for carbon removal buyers and suppliersListen to the RCC episode with Peter Minor from Absolute ClimateListen to the RCC episode with Ryan Covington from Philip Lee LLPResourcesBecome a paid subscriber of Reversing Climate ChangeSubscribe to the Reversing Climate Change SubstackAgainst the Machine: On the Unmaking of Humanity by Paul KingsnorthAbundance by Ezra Klein & Derek Thompson"S2E53: Paul Kingsnorth on the shared roots of climate crisis, transhumanism, & immortality"TeleologyYin and yang"S2E15: Are you a wizard or a prophet?—w/ Charles C. Mann"The Wizard and the Prophet: Two Remarkable Scientists and Their Dueling Visions to Shape Tomorrow's World by Charles C. Mann1491: New Revelations of the Americas Before Columbus by Charles C. MannJoseph Schumpeter & creative destructionJohn ZerzanDunbar's NumberPrimitivismThe World Until Yesterday: What Can We Learn from Traditional Societies? by Jared Diamond (do note the disputing of a claim I echoed from the book, that violence can be endemic in hunter-gatherer societies; take my words with a grain of salt here)YIMBYNational Environmental Policy Act (NEPA)ZapatistasBattle of Seattle"Anyway, Here's Wonderwall" memeThe Kinks Are the Village Green Preservation SocietyEnabled Emissions CampaignAmory LovinsWendell BerryRay KurzweilWhat Technology Wants by Kevin KellyIf Anyone Builds It, Everyone Dies by Eliezer Yudkowsky & Nate SoaresA brief interpretation of some of Peter Thiel's Greta Thunberg antichrist commentsA House of Dynamite (film)"The mountains are calling and I must go."- John Muir“I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.”- Albert Einstein (attributed)"The master’s tools will never dismantle the master’s house."- Audre Lorde

Dec 27, 2025 • 9min
The universal cannibalism of the sea vs. one insular Tahiti—My favorite chapter of Moby-Dick
With a matchup like that, who would win?I love this chapter from Moby-Dick. It so perfectly contrasts sublime beauty of the world and the raw horror of life. I was thinking of it often while on my recent sailing trip aboard the Statsraad Lehmkuhl from Seattle to San Francisco.Sit back and let me read the chapter for you, and may it inspire you to crack open some Herman Melville.ResourcesBecome a paid subscriber of Reversing Climate ChangeSubscribe to the Reversing Climate Change SubstackChapter 58: Brit, from Herman Melville's Moby-Dick; or The Whale"377: One Week Before the Mast—A Climate Sailing Travelogue from Seattle to San Francisco""ASMR: Your one-hundred year-old Norwegian tall ship is sailing in the middle of the Pacific Ocean""The Beauty and Terror of the World", the Substack piece which has the full chapter text and me reading it

Dec 23, 2025 • 1h 1min
379: Another Side of Sebastian Manhart...
It's that special time of year to put away worldly cares and focus on family, giving, and... carbon removal? Did I read that right?Come hang with Ross and CDR force of nature Sebastian Manhart to discuss family, parenthood, hope for the future, the quest to expand the moral sphere, and why we should be focusing on trendlines and not headlines.Happy Holidays, however you choose to spend it!This Episode's SponsorsAbsolute Climate: the only standard that’s developed independent of registriesPhilip Lee LLP: legal resources for carbon removal buyers and suppliersListen to the RCC episode with Peter Minor from Absolute ClimateListen to the RCC episode with Ryan Covington from Philip Lee LLPResourcesBecome a paid subscriber of Reversing Climate ChangeSubscribe to the Reversing Climate Change SubstackSebastian Manhart's websiteCarbonfutureGigaten newsletterLeila Conner's video podcast of Gigaten with Sebastian Manhart"368: The World Will Be Saved by Beauty: Carbon Removal's Feature Film Debut, LEGION 44—w/ Leila Conners, filmmaker"Tree MediaLegion 44CDRJobsDeutscher Verband für negative Emissionen e.V. (DVNE): one of the many trade organizations for CDR Sebastian has been a major part ofCDR Policy ScoopSebastian Manhart's LinkedIn post about the 5% max of international credits that may potentially be used for European carbon compliance"The Monkey's Paw" article on TvTropesPet Sematary

Dec 15, 2025 • 38min
378: When Bad Companies Buy Good Carbon Removal
Is the voluntary carbon market a club for saints? Or is it a hospital for sinners? Are we meant to understand all and then to forgive all? How much time are we meant to devote to idealistic abstinence-esque policies for change, and how much of our professional lives should go to harm reduction?Today's show deals with some of the biggest questions in carbon removal and carbon markets, and does it in just the kind of literary-philosophical ways that make this shows its own... whatever it is that it is.Trust me and I'll guide you through the history of the Soviet Union and at least one Warsaw Pact country, David Simon, critical theory, German nuclear policy, the Bill Gates piece that ruffled all feathers one way or another, the Enabled Emissions Campaign, Aleksandr Solzhenitsyn, Vasily Grossman, I Heart Huckabees, and Bicycle Thieves.Some days you hit record and you never quite know what you're going to discover...N.B. The image today is Vaclav Havel's greengrocer from "The Power of the Powerless" as illustrated by his Czech compatriot, Josef Lada, who did the original illustrations for Jaroslav Hašek's incredibly funny,The Good Soldier Švejk, who is a sort of antiwar/pacifistic Amelia Bedelia who messes things up in the Army by being a bit too literal and a bit too eager to follow orders.This Episode's SponsorsAbsolute Climate: the only standard that’s developed independent of registriesPhilip Lee LLP: legal resources for carbon removal buyers and suppliersListen to the RCC episode with Peter Minor from Absolute ClimateListen to the RCC episode with Ryan Covington from Philip Lee LLPResourcesBecome a paid subscriber of Reversing Climate ChangeSubscribe to the Reversing Climate Change SubstackThe Good Soldier Švejk by Jaroslav HašekKhrushchev ThawThe Death of Stalin filmVaclav Havel"The Power of the Powerless" by Vaclav Havel; it's abridged here but you can click through to the full thing if you'd likeDeirdre McCloskey"The Clash of Aristocratic and Bourgeois Virtues in 'The Wire'" by Dr. Bart WilsonThe WireGreat PurgeHolodomor (the Ukrainian Famine)Katyn Massacre (NSFW: death pit image is first thing on Wikipedia)"The Society of the Spectacle" by Guy DebordJean Baudrillard"Three tough truths about climate" by Bill GatesGermany closing nuclear power plantsEnabled Emissions CampaignAlexander SolzhinitsynVasily GrossmanEverything Flows by Vasily GrossmanI Heart HuckabeesBicycle Thieves

Dec 12, 2025 • 29min
ASMR: Your one-hundred year-old Norwegian tall ship is sailing in the middle of the Pacific Ocean
Gentle wind, sail, and ocean sounds with looped video taken during a trip from Seattle to San Francisco aboard the Statsraad Lehmkuhl for the One Ocean Expedition.

Dec 9, 2025 • 1h 3min
377: One Week Before the Mast—A Climate Sailing Travelogue from Seattle to San Francisco
One could fly to the Bay Area in about ninety minutes, but what if it took a week, enormous amounts of teamwork on a 111-year-old Norwegian sailing barque, and caused a near-universal seasickness in thirty-foot seas?Today's show is a monologue about my experience sailing from Seattle to San Francisco on the Statsraad Lehmkuhl for the One Ocean Expedition. I'm an Executive in Residence at Maritime Blue, which sponsored this leg of the trip to raise awareness of the challenges facing the world ocean, its many inhabitants, and ourselves.The show is about many of the practicalities of living and working among one hundred other scientists and sailors, but it's also about so much more. It's about anxiety, proximity to nature, and a reminder that humans aren't always in charge. And that also, sometimes you don't have to do the thing you really don't want to do, and why that might just be okay.This Episode's SponsorsAbsolute Climate: the only standard that’s developed independent of registriesPhilip Lee LLP: legal resources for carbon removal buyers and suppliersListen to the RCC episode with Peter Minor from Absolute ClimateListen to the RCC episode with Ryan Covington from Philip Lee LLPResourcesBecome a paid subscriber of Reversing Climate Change"ASMR: Your one-hundred year-old Norwegian tall ship is sailing in the middle of the Pacific Ocean" "The universal cannibalism of the sea vs. one insular Tahiti—My favorite chapter of Moby-Dick", bonus episode related to this episode"The Beauty and Terror of the World": a Substack post about the Moby-Dick chapterStatsraad LehmkuhlOne Ocean ExpeditionMaritime BlueThe Essentials Of Living Aboard A Boat: The definitive Guide for Liveaboards by Mark NicholasJohn Kretschmer Sailing"S2E33: Sailing in the age of climate change—w/ John Kretschmer, author and sailor"Zorba the Greek by Nikos KazantzakisHomerThe Annapolis Book of Seamanship by John RousmaniereUniversity of Washington School of OceanographyKarl Ove KnausgårdBrunost: the brown cheese of NorwaySailing La Vagabonde


