Carbon removal

Heirloom raises $150M for its limestone-based carbon removal tech

The startup opened the first direct air capture facility in the U.S. last year. The funding will help it build more plants capable of removing higher volumes of CO2.

By Allison Prang . 4 December 2024

An employee in high-visibility safety gear and a hardhat stands in a production facility — A worker handles trays covered with calcium oxide, which resembles flour. (Heirloom)

Carbon removal

A new demo plant will repurpose mining waste and also capture CO2

Travertine’s demo facility in Rochester, NY, will upcycle captured CO2 and discarded gypsum into sulfuric acid for use in a nearby metals company’s operations.

By Allison Prang . 17 October 2024
Carbon removal

Under the sea: Running Tide’s ill-fated adventure in ocean carbon removal

The startup made a big splash, then ran aground this summer. Its story has a lot to teach us about trying to geoengineer our way out of climate change.

By Amanda Simson, Abby Rabinowitz . 19 September 2024
Carbon removal

A $100 million carbon-removal competition enters its final stage

The Elon Musk–backed Xprize competition announced 20 finalists to advance breakthrough solutions for CO2 removal using air, rocks, land, and oceans.

By Maria Gallucci . 8 May 2024
Emissions reduction

Frontier bets $58.3M on carbon removal startup Vaulted Deep

The Stripe-backed fund placed its biggest CO2-removal order yet with the 7-month-old startup, which injects waste biomass “slurry” deep underground.

By Maria Gallucci . 1 May 2024
Carbon capture

CarbonCapture wants to take carbon removal down the cost curve

The aptly named startup just raised $80 million in private funding to try to prove out its “swappable” CO2-absorbing machines.

By Maria Gallucci . 14 March 2024
Carbon capture

US announces first winners in $3.5B carbon removal program

Two direct air capture facilities along the U.S. Gulf Coast will receive federal funding to try to pull millions of metric tons of CO2 from the sky.

By Maria Gallucci . 11 August 2023
Carbon capture

'High-quality' carbon-removal tech will be focus for new industry group

The Carbon Removal Alliance is all about practical and permanent solutions for capturing CO2 — shady offsets and short-term schemes need not apply.

By Emily Pontecorvo . 10 March 2023
Carbon capture

Carbon removal now 'unavoidable' part of fighting climate change, UN says

Emissions cuts alone won't limit global warming to 1.5°C, IPCC report warns. But can carbon removal from land use and technology scale up in time?

By Jeff St. John . 5 April 2022
Carbon capture

The buzz around carbon removal is drawing jobseekers in droves

Workers say the growing urgency of the climate crisis and pursuit of a meaningful career path are big pulls.

By Maria Gallucci . 24 January 2022
Climate crisis

Priming the pump for high-priced, high-promise carbon removal tech

South Pole and Mitsubishi want investors for $800 million worth of direct air capture, mineralization and biochar projects.

By Jeff St. John . 17 May 2021