Crush Up Rocks That React with Carbon
Certain minerals naturally react with carbon in the atmosphere, so we crush them into a fine powder to increase their surface contact with the air and dramatically speed up the reaction.
Spread the Rocks on Agricultural or Coastal Areas
The crushed minerals are spread across farm fields or coastal zones, where they draw carbon into the soil while boosting crop yields and creating new revenue for farmers.
Store the Carbon in the Soil or Ocean
The carbon is locked into the ground or, after rainfall, eventually carried to the ocean, and in both cases it forms a stable new mineral that keeps the carbon stored for thousands of years.
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How does Enhanced Rock Weathering work?
Certain rocks naturally absorb CO2 from the atmosphere as they break down, but this normally takes a long time. Enhanced Rock Weathering (ERW) speeds up this natural process, taking weeks instead of what nature usually accomplishes over millenia.
By crushing these rocks into fine powder, we dramatically increase their surface area, making them absorb CO2 thousands of times faster. The crushed rock can then be spread on farmland or coastal areas where it does double duty: it acts as a natural fertilizer that improves soil health while continuously pulling carbon from the air and locking it away in stable compounds in the soil and oceans.
As rainwater washes through the treated soil, it carries dissolved carbon into rivers and eventually the ocean, where it’s stored permanently as stable minerals. This mimics the natural carbon cycle but at a pace that can make a real difference for climate change.
ERW allows Canada to boost crop yields and create new revenue streams for farmers. This positions Canada to lead in the growing carbon removal market using our existing mining and agricultural infrastructure.
Co-Benefits from ERW
Increased Crop Yield
ERW enhances soil health, helping farmers grow more, while also lowering their emissions.
Supports Rural and Agricultural Communities
ERW connects the agricultural and mining sectors as farmers earn revenue from increased crop yields, while mining companies get new consumers.
Industries Supported
Farming
Enhanced rock weathering boosts crop yields and soil health by adding minerals that reduce soil acidity and release nutrients, while giving farmers a new revenue stream from spreading rock dust across their fields.
Mining
Enhanced rock weathering creates demand for crushed silicate rock and mining byproducts, turning waste rock and tailings into a valuable, carbon-storing product and opening a new market for the sector.
Transportation
Moving crushed rock from quarries to farmland at scale creates steady demand for trucking, rail, and shipping, generating jobs and business across the transportation sector.
Project snapshot
Eastern Ontario Project
Kingston, ON
UNDO spreads a fast-dissolving rock, mined and ground into a fine powder, across farmland near Kingston, Ontario, where it soaks up carbon from the air as it breaks down while also boosting soil health. The Ontario project was one of four global winners of the $100 million XPRIZE Carbon Removal competition in 2025, and Farm Credit Canada backed the expansion onto the Prairies with a strategic investment.
