Podcast-Take

Take on a podcast episode from The Carbon Curve, originally published Thu, 16 Ap. Listen: https://carboncurve.substack.com/p/seven-buyers-in-a-trench-coat TL;DR Microsoft pausing new durable CDR purchases isn’t the story — the story is they were ~80-90% of the market to begin with. Correct framing. Governments committed $45M to CDR purchases, spent ~$0; private sector spent $10.5B. Striking number, worth citing. Jack’s case: voluntary buying was always a house of cards; policy has to take over. Hard to argue with at this point. Defense of enhanced oil recovery as a legitimate scaling pathway for direct air capture. Will annoy some, but the argument is coherent. Dream policy: low-carbon-intensity product standard embedded in trade, with CDR compliance pathways. Interesting, underdeveloped here. Naim Merchant interviews Jack Andreasen Cavanaugh, who runs the Carbon Management Program at Columbia’s Center on Global Energy Policy and previously led carbon management policy at Breakthrough Energy. The episode is a reaction to Heatmap’s reporting that Microsoft is pausing new durable carbon removal purchases, and Cavanaugh’s weekend piece arguing the real failure is governmental, not corporate. It’s the cleanest articulation I’ve heard of “the voluntary market was always structurally fragile” — read the episode post if you don’t have an hour. ...

Take on a podcast episode from Reversing Climate Change, originally published Thu, 21 Ma. Listen: https://podcasters.spotify.com/pod/show/reversingclimatechange/episodes/400-What-kind-of-leader-does-my-CDR-company-need-me-to-be-w-Julia-Reichelstein--Vaulted-Deep-e3jiss8 TL;DR Vaulted Deep is on track for ~50,000 tonnes of durable removal this year, up from 25,000 tonnes cumulative to date — credible scale-up for a non-biochar developer. Reichelstein frames Vaulted as a waste management company first, CDR second; gets paid on the disposal side, which sidesteps biomass-competition risk entirely. The Microsoft ~5M-tonne offtake (signed 2024) underwrites site development through ~2040 — the deal that turned them from operator into builder. Most of the conversation is leadership philosophy, not technical. Useful if you’re a founder; thinner if you came for measurement, reporting, and verification (MRV) or geology specifics. Spin-out mechanics from Advantek get a rare honest treatment — including why venture-backed spin-outs are scarce. Ross Kenyon hosts Julia Reichelstein, co-founder and CEO of Vaulted Deep, for a wide-ranging conversation that’s roughly one-third Vaulted operations and two-thirds founder psychology. If you’ve heard Reichelstein on the technical circuit before, this is the softer cut — useful for understanding how she thinks, less useful if you want to interrogate the deep-well injection thesis. ...

Take on a podcast episode from The Carbon Curve, originally published Thu, 30 Ap. Listen: https://carboncurve.substack.com/p/carbon-removal-is-stuck-in-low-earth TL;DR Friedmann argues CDR 1.0 built the scaffolding (registries, raters, taxonomy) but isn’t structured to close commercial deals — reframing, not bashing. Five pillars to unlock CDR 2.0: technical readiness, project assurance, standardization, bankability, transactional ease. Useful checklist, light on novelty individually but coherent together. Headline claim: deals die at the CFO, not the CSO. Risk management, not price, is the binding constraint. Rings true with what buyers actually say. Pointed critique: 5,000-ton pilots don’t interest 100kt-scale buyers like Microsoft/JPM/Airbus. Sector is still over-indexed on first-of-a-kind storytelling. Intro segment announces the Quebec Surficial Mineralization Hub at Thetford Mines — 800Mt tailings, Frontier RFP open through May 22, 2026. Naim Merchant hosts Julio Friedmann (Chief Scientist, Carbon Direct) to walk through Carbon Direct’s new “CDR 2.0: Five Pillars of Successful Project Deployment and Delivery” report. The episode is essentially a guided tour of why durable carbon removal deal flow has stalled and what specifically needs to change at the buyer-procurement-bank interface. There’s also a 4-minute opening from Merchant announcing the Quebec Surficial Mineralization Hub partnership between Carbon Removal Canada, Frontier, and Thetford Mines. ...

Take on a podcast episode from The CDR Policy Scoop, originally published Fri, 15 Ma. Listen: https://shows.acast.com/the-cdr-policy-scoop/episodes/cbam-and-international-credits-whats-just-changed-with-dan-m TL;DR Draft Carbon Border Adjustment Mechanism implementing act (published 13 May 2026) lets importers deduct carbon costs paid abroad — including, controversially, international credits. First-time clarity worth knowing. Hard cap: international Article 6 credits can offset at most 10% of a CBAM liability. But most third-country ETSs already cap offset use at 5-10%, so binding impact is modest. No quantitative cap on domestic credits used inside a third-country mandatory regime. Maleski can’t justify the asymmetry; nor can the hosts. Genuinely odd policy choice. “Effective” carbon cost is net of free allocation — so Brazil, Turkey, Korea ETSs in ramp-up phase deliver near-zero deduction regardless of headline carbon price. Important reality check. Anti-gaming safeguard is “independent persons” verifying paid prices. Maleski openly notes clients ask how to inflate intra-group credit prices. Thin guardrail. The CDR Policy Scoop (episode link) reconvened Dan Maleski of Ruby Advisors one day after the Commission dropped its draft implementing act on Article 9 of CBAM — the provision letting importers deduct carbon costs already paid in the country of origin. Sebastian Manhart and Eve Tamme spend 30 minutes parsing what the act actually says about international credits, the 10% cap, and why the consultation (closing early June) still leaves big pieces missing. ...

Take on a podcast episode from Reversing Climate Change, originally published Thu, 07 Ma. Listen: https://podcasters.spotify.com/pod/show/reversingclimatechange/episodes/398-Scientists-vs--Engineers---the-Commercial-Pressure-on-Carbon-Dioxide-Removalw-Erica-Dorr--Samara-Vantil--Rainbow-e3j0jq0 TL;DR Rainbow’s head of science Erica Dorr and certification engineer Samara Vantil reframe the science-vs-engineering split as a false binary; both do applied work daily. The real gap is technical-vs-commercial. Useful framing for anyone who’s watched a salesperson promise a methodology change on a call. Concrete example: biochar lab samples cost ~€600 to ship Africa→Europe. That’s the kind of number that should anchor measurement, reporting, and verification (MRV) requirement-setting. Defense of Charm’s “cut scope” posture as courage, not laziness — diminishing returns on the last sample are real and worth saying out loud. When project developers can’t deliver a data point, Rainbow’s default is a conservative discount factor, not rejection. Worth knowing if you’re a buyer reading their credits. Ross Kenyon hosts Erica Dorr (head of science) and Samara Vantil (environmental engineer, certification) of Rainbow, the carbon removal standard and registry. The episode is a follow-up to two essays Kenyon wrote for Rainbow on whether durable CDR needs more field engineers or more scientists, and lands somewhere more interesting than either piece: the science/engineering line is fuzzy, and the harder boundary is between technical teams and commercial. ...

Take on a podcast episode from REEF Roundup: 🪸Coral Reefs🐠 and 🐙Marine Conservation🦈, originally published Wed, 15 Ap. Listen: https://podcasters.spotify.com/pod/show/reefroundup/episodes/Dr--Sambuddha-Misra-Drinking-Tea-to-Save-Coral-Reefs--The-Mechanics-of-Enhanced-Rock-Weathering-in-Darjeeling--S5E5-e3hsh58 TL;DR Alt Carbon’s chief scientist explains why Darjeeling’s foothills are a rare “supply-limited” weathering regime — solid mechanistic justification for site selection. 2025 Isometric-verified delivery claimed as Asia’s first enhanced rock weathering (ERW) credits; guest says next tranche is ~10x larger. Useful datapoint on Asian ERW supply. Current deployment ~80,000 acres, roadmap to 250k then 1M acres across Bengal and Assam. Ambition is real but measurement is the bottleneck. Honest admission: a million-acre deployment implies ~3M samples/year, more than all geochemistry has measured historically. New measurement, reporting, and verification (MRV) methods required. Reported 25–100% crop yield uplift on degraded tea-estate soils from basalt micronutrients. Eye-catching, but no controls described — take with caution. Reef Roundup (a marine conservation show) hosts Dr. Sambuddha Misra, IISc earth scientist and chief scientist at Alt Carbon, for a surprisingly substantive walk through the geochemistry, MRV, and scaling math of enhanced rock weathering in the Himalayan foothills. The framing is coral-reef alkalinity, but the meat is durable CDR: basalt sourcing, supply-limited weathering regimes, Isometric verification, and the brick wall of sample-scale measurement. ...

Take on a podcast episode from The CDR Policy Scoop, originally published Sun, 03 Ma. Listen: https://shows.acast.com/the-cdr-policy-scoop/episodes/fixing-permanence-insurance-and-the-permanence-trust-with-na TL;DR Natalia Dorfman (Kita CEO) argues buffer pools were a useful bootstrap but not built for perpetual liability — a defensible position, gaining traction with standards themselves. Frames permanence as two distinct problems: short-term liability (handle via insurance on the developer) vs long-term/perpetual (needs a fund mechanism). Useful clean split. The Permanence Trust: an endowment-style, fully capitalized fund where per-credit fees are invested so the corpus always exceeds expected reversal costs. AFF-led feasibility study, report due ~June 2026, pilot to follow. Expects multiple Permanence Trusts (per-jurisdiction, per-standard), not one global fund. Realistic, though fragmentation risk goes unaddressed. Interim move: insurance-wrapped buffers so standards stop “holding the bag.” Practical bridge, but no costs disclosed on-air. Eve Tamme and Sebastian Manhart host Natalia Dorfman of Kita for a 30-minute walk through where carbon insurance has landed in 2026 and, more substantively, the Permanence Trust concept being developed by the American Forest Foundation with Kita as modeling partner. If you’ve been hearing “permanence trust” in conference hallways and wondering what’s actually under the hood, this is the cleanest public explanation so far. ...

Take on a podcast episode from The Carbon Curve, originally published Thu, 30 Ap. Listen: https://carboncurve.substack.com/p/carbon-removal-is-stuck-in-low-earth Naim Merchant hosts Julio Friedmann, Chief Scientist at Carbon Direct, to unpack the firm’s new “CDR 2.0” report. The thesis: durable carbon removal has reached “low Earth orbit” — markets, registries, raters, a buyers coalition all exist — but the next stage requires a different operating model. Friedmann lays out five pillars: technical readiness, project assurance, standardization, bankability, and transactional ease. ...

Take on a podcast episode from The CDR Policy Scoop, originally published Wed, 29 Ap. Listen: https://shows.acast.com/the-cdr-policy-scoop/episodes/digging-deep-with-gabrielle-walker-a-life-in-climate TL;DR Long-form interview with Gabrielle Walker (CUR8, Rethinking Removals) — part biography, part state-of-the-CDR-market read. Worth it for the second half. Walker’s “pre-compliance” framing for 2026-2035: SBTi draft reportedly requires removals by 2035, ISO net-zero standard (due later this year) will mandate interim removal targets. Useful if accurate. British Airways portfolio anecdote: Sean Doyle reportedly sees CDR as ~30% of BA’s decarbonization solution. First time I’ve seen that number cited publicly. CUR8’s 5-pillar diligence framework (climate integrity, team, future potential, delivery risk, “core benefits” not co-benefits) — practical, steal-able. Honest moment: Walker admits she initially dismissed Global South CDR as virtue-signaling before James Wanjigi (Kenya) changed her mind. Worth hearing. Episode link. Sebastian Manhart and Eve Tamme launch a long-form spinoff of the CDR Policy Scoop with Gabrielle Walker — co-founder of CUR8 and Rethinking Removals, and one of the people who has actually been in rooms with FTSE-100 CSOs trying to convert intent into off-takes. The first 60% is biography (Antarctica, ice cores, science journalism); the back half is the part practitioners want. ...