Crush rocks that naturally react with CO2 into a small grain size.
This is the expanded view of tooltip for #1. That carbon needs to be stored somewhere, and Canada has world-class options. It can be permanently stored deep underground in
Spread the material on agricultural land or coastal areas.
This is the expanded view of tooltip for #2
Store carbon in soils and the ocean.
This is the expanded view of tooltip for #3
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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 Yeild
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
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Mining
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Construction
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Transportation
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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.
