DAC’s biggest cost isn’t the fan. It isn’t the building or the sorbent material. It’s the heat — specifically, the heat required to release the CO₂ you just captured so you can regenerate your sorbent and do it again. Standard amine-based systems need north of 100°C for that regeneration step. Which means you’re burning energy — often natural gas — to run a machine designed to remove carbon. The irony writes itself. ...
While one North American government is busy dismantling climate infrastructure, the other is quietly becoming a meaningful player in carbon dioxide removal. Three data points from Canada tell a coherent story. Climeworks chose Calgary for its Canadian headquarters. The Swiss direct air capture company — operator of the Mammoth facility in Iceland and one of the most credible DAC companies in the world — looked at North America and picked Calgary. That’s not a symbolic choice. It reflects real assessment of Canada’s regulatory environment, talent pipeline, and long-term policy stability. ...
Sunday, March 29, 2026. Five original posts today, and today’s data deserves the attention. Our Coverage#Over 1 Million Tonnes of CDR Purchased in a Single Week The CDR market hit a milestone that would have been unthinkable three years ago. More than a million tonnes of carbon dioxide removal changed hands in a single week — driven by biochar scaling globally, BECCS coming online in Stockholm, and big buyers getting serious. The Hemingway quote about bankruptcy applies here: markets change slowly, then all at once. ...
One of the most persistent arguments against direct air capture is the energy one: DAC is too energy-intensive, too greedy, to be a serious climate tool. It’s repeated often enough that many people have accepted it as settled wisdom. It isn’t. A study published in Environmental Research: Energy modeled exactly how much additional primary energy demand a serious CDR buildout would require to hit a 1.0°C temperature target. The answer: 12.0–37.5% additional primary energy compared to a baseline scenario without ambitious CDR. ...
Ocean-based carbon dioxide removal has long carried a reputation for being conceptually promising but empirically vague. New lab results from a study on Equatic’s electrolysis process push things in a more concrete direction. The study tested seawater alkalinization via two methods — direct and sequential carbonation — using Equatic’s electrolysis approach. Both methods achieved 96–98% CO₂ removal efficiency. Both sequestered approximately 3.5 grams of CO₂ per liter of treated seawater. ...
More than one million tonnes of Carbon Dioxide Removal purchased in a single week. Let that sit for a moment. A few years ago, that number wasn’t reached in an entire year. The cumulative CDR market was measured in tens of thousands of tonnes — mainly Stripe’s early purchases and a handful of others demonstrating there was such a thing as a voluntary CDR market at all. Now, in one week, more than a million tonnes changed hands. ...
Aviation is one of the sectors that keeps climate scientists up at night. Road transport has EVs. Power generation has solar and wind. Heating has heat pumps. Aviation? The physics of long-haul flight make it genuinely hard to decarbonize. Sustainable aviation fuel exists but is expensive, scarce, and itself still produces CO₂ — just from biomass rather than fossil feedstocks. Green hydrogen is promising for short-haul but is years from commercial scale. Zero-emission long-haul flight is probably decades away. ...
Corning’s market cap is over $30 billion. They make the glass in your iPhone, the ceramic substrates in catalytic converters, and optical fibre for telecommunications infrastructure. They are not a climate startup. That’s exactly why their entry into the DAC supply chain is worth paying attention to. Aircapture and Corning have announced the transition of a multi-year collaboration from R&D toward commercial deployment and scale-up of direct air capture. The partnership isn’t new — they’ve been working together for a while. What’s new is the pivot toward commercial-scale production. ...
Rice husks in Cambodia are mostly burned in open fields. That’s not just a waste of carbon — it’s a source of black carbon emissions, a local air quality problem, and an agricultural loss. Arukah Capital is doing something more interesting with them. Arukah has issued the first CO₂ Removal Certificates (CORCs) in Cambodia under the Puro.earth Biochar Carbon Removal methodology. It’s their first-ever issuance, and it marks a new geography for Puro.earth’s now-global biochar supplier network. ...
Less than 10% of current annual greenhouse gas emissions can be sustainably removed per year — across all natural and technological sinks combined. That constraint reframes the entire CDR conversation. Researchers Julia Danzer and Gottfried Kirchengast from the Wegener Center for Climate and Global Change at the University of Graz have published a study in Global Environmental Change arguing that CDR capacity is a finite resource, and that finite resources need fair allocation rules. ...