Captain Drawdown’s daily logbook on every CDR story, paper, and expert voice — so you don’t have to read them all.

This week’s numbers were set by named people making specific commitments, not by panels debating overshoot in the abstract. Five figures. Five decisions. A pattern worth logging.

$2.3 million — Zeke Hausfather, climate research lead at Frontier Climate, announced four research grants for ocean alkalinity enhancement science. In his words, the money is meant to “help answer some of the big scientific questions needed to enable safe and scalable ocean alkalinity enhancement.” Zeke Hausfather (@zekehausfather.com on Bluesky) is putting Frontier Climate’s dollars directly on secondary precipitation and measurement, reporting and verification (MRV) - the two questions OAE preprints keep flagging as blockers.

AAA-A — Sylvera issued its first-ever pre-issuance DAC rating to Deep Sky One. This is an analyst call, made by a named ratings team, that sets a public benchmark other DAC projects will now be measured against before a single tonne is delivered. Buyers now have a reference point they did not have last month.

160 signatories — 160 academics, civil society leaders, and environmental professionals signed an open letter to the UK government urging mandatory carbon storage obligations on fossil fuel producers. The signatories want to shift who pays for CDR from voluntary buyers to the companies extracting the carbon in the first place. Worth naming clearly: CDR is for hard-to-abate residual emissions, and the letter’s framing keeps that intact. It targets extraction accountability, not a license to keep burning.

First DAC+Storage plant in the Global South — Octavia Carbon’s team is publicly framing its Kenyan site as the first direct air capture plus storage plant in the Global South, built on land officials once dismissed as “bare and worthless.” Founder-narrated milestones matter here because DAC’s geography has been assumed to follow cheap geothermal and North American 45Q credits. Octavia is arguing otherwise, on the ground, with a plant.

5 years — Mati Carbon, the XPRIZE Carbon Removal grand prize winner, signed a five-year agreement with the Alliance of Bioversity International and CIAT for tropical smallholder enhanced rock weathering (ERW) field trials. Five years is one of the longest ERW field commitments announced this year. ERW’s credibility depends on multi-season soil data from real farms, and that is exactly what a five-year contract buys. See What Is Enhanced Weathering? A Primer for why duration matters more than plot count.

The pattern. Five people. Five hard numbers. One funder allocating research dollars against a specific science gap. One analyst setting a public rating benchmark. 160 signatories pushing a polluter-pays mechanism. One founder claiming a geographic first. One project team locking in a half-decade of field data. None of these are waiting for the UN Environment Programme’s overshoot conversation to resolve. Sara Vicca (@saravicca.bsky.social on Bluesky) framed the UNEP report the way most researchers do: “CO2 removal is needed to reverse warming, but its limitations, uncertainties and costs make it no substitute for cutting emissions now.” The people above are what that necessity looks like when it stops being a sentence and starts being a line item.

If you are building or buying, the reference points that will matter in six months are being set right now by specific analysts, specific funders, and specific project teams. Two things to watch. Does Sylvera’s AAA-A pre-issuance rating for Deep Sky One become a template buyers demand before signing DAC offtake? And does the 160-signatory UK letter draw a formal government response, or fade into the archive with the others? Both answers will tell us whether individual moves this week compound into structure, or stay isolated.

Citations

  1. Bluesky — announced four research grants — Bluesky post
  2. Carbon Herald — first-ever pre-issuance DAC rating
  3. Carbon Herald — open letter to the UK government
  4. LinkedIn — the first direct air capture plus storage plant in the Global South — LinkedIn post
  5. Substack (africabrief) — five-year agreement with the Alliance of Bioversity International and CIAT — Substack post
  6. Bluesky — @saravicca.bsky.social on Bluesky — Bluesky post