Carbon capture

CO2-removal leader Climeworks says new tech can halve costs, energy use

Direct air capture is expensive and energy-intensive. Climeworks, which operates the world’s largest DAC plant, says it’s making progress tackling both challenges.

By Maria Gallucci . 4 June 2024

An artist's rendering shows Climeworks' cube-shaped vision for direct-air-capture systems. (Climeworks)

Carbon capture

World's largest 'direct air capture' plant starts sucking CO2 from the sky

Climeworks just began operating its Mammoth plant in Iceland. The 36,000-ton facility is a significant step up for the costly, energy-intensive tech.

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

US Steel plant in Indiana to host a $150M carbon capture experiment

CarbonFree’s SkyCycle technology will capture CO2 and extract calcium from steel slag to make high-value chemicals. The goal: making carbon capture profitable.

By Jeff St. John . 3 April 2024
Carbon capture

Burying plant waste removes CO2 from the air. But can it scale?

Startup Graphyte is joining efforts to store biomass underground. Its technique is one of many that aims to use nature’s scraps to help the world decarbonize.

By Maria Gallucci . 2 April 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

Avnos raises $36M to pull CO2 — and water — from the sky

The investment round, led by a subsidiary of utility giant NextEra, comes as both private and public interest in direct air capture technology picks up.

By Maria Gallucci . 6 February 2024
Carbon capture

America’s first commercial direct air capture plant just got going

The startup Heirloom says it’s capturing CO2 from the sky and locking away the planet-warming gas, making it the first and only commercial U.S. plant to do so.

By Maria Gallucci . 9 November 2023
Clean industry

To decarbonize cement, the industry needs a full transformation

Cement production has an enormous carbon footprint. That can be curbed with plug-and-play solutions, but eliminating emissions entirely will require big, ambitious action.

By Jeff St. John . 24 October 2023
Video

Video: See how this NYC factory traps CO2 in concrete blocks

Canary Media visits a Brooklyn warehouse and the basement of a Manhattan high-rise to learn how CO2 can be captured and turned into construction material.

By Maria Gallucci . 24 October 2023
Food and farms

Biochar is a proven form of carbon removal. Can it scale up?

The soil-based charcoal can sequester carbon for long periods of time, and unlike high-tech carbon removal, it’s relatively straightforward to do today.

By Max Graham . 2 October 2023