Photo of spreader truck in action (IMAGE)

PNAS Nexus

Photo of spreader truck in action

Caption

Spreading basalt rock dust with a conventional lime spreader on row crop acres in the U.S. corn belt.  As the rock dust dissolves in the soil, it converts carbon dioxide to dissolved ions that are eventually transported to the ocean via runoff and stored for thousands of years.

Credit

Gavi Welbel

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