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The Carbon Corner

News, updates and stories from 4C's members, projects & awardees!

Bioforcetech's sets its sights on carbon negative concrete and asphalt with its biosolids -based aggregate, OurCarbon.

Bioforcetech is turning municipal waste into carbon-storing aggregate for concrete and asphalt—offering cities a scalable solution for both carbon removal and biosolids disposal.

Josefina Hajek-Herrera

June 24, 2025

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5 min read

Awardee Spotlight

Bioforcetech's sets its sights on carbon negative concrete and asphalt with its biosolids -based aggregate, OurCarbon.

Bioforcetech is turning municipal waste into carbon-storing aggregate for concrete and asphalt—offering cities a scalable solution for both carbon removal and biosolids disposal.

Josefina Hajek-Herrera

June 11, 2025

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5 min read

Awardee Spotlight

From air to block: CarbonBuilt’s bold vision to store CO2 in concrete.

CarbonBuilt is turning mineralized CO₂ into a building block for concrete. Their Flagstaff pilot with Block-Lite will cut up to 3,000 tonnes of CO₂ annually.

Josefina Hajek-Herrera

April 15, 2025

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5 min read

Awardee Spotlight

Minus Materials: decarbonizing concrete with algae.

Minus Materials, a 2024 4 Corners awardee, is transforming how we make concrete by growing carbon-negative limestone from microalgae instead of mining it from the earth. Their BioPCC material stores CO₂ and slashes emissions from cement production—one of the world’s dirtiest industries.

Josefina Hajek-Herrera

April 22, 2025

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5 min read

Awardee Spotlight

Waste to removal: how Carba is redefining carbon removal with biochar.

Carba, a 2024 4 Corners awardee, converts waste biomass into stable biochar using portable, low-energy reactors, enabling permanent carbon storage while reducing landfill emissions and transportation costs.

Josefina Hajek-Herrera

April 22, 2025

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5 min read

Awardee Spotlight

Travertine’s Boulder Block: creating carbonate cement substitutes with industrial waste.

With help from a 4 Corners grant, Travertine proved its carbon-removing material can stand up to concrete standards—and shake up one of the world's most carbon intensive industries.

Josefina Hajek-Herrera

April 10, 2025

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5 min read

Awardee Spotlight

Burying carbon: Woodcache’s wildfire solution gets a boost from 4 Corners.

Woodcache PBC's wildfire-fighting, carbon-storing burial method just got a major boost from 4 Corners—and it’s already removing CO₂ and creating local impact in Colorado.

Josefina Hajek-Herrera

April 11, 2025

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5 min read

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