The world’s farmers could help the planet reach a key carbon removal goal by mixing crushed volcanic rocks into their fields. Wet, warm tropics are the most promising locations for this climate intervention strategy called enhanced rock weathering. It takes advantage of the weathering process which naturally sequesters carbon dioxide in carbonate minerals, by applying crushed basalt, a fast-weathering rock that forms as lava cools. Applying 10 tons of basalt dust per hectare of cropland globally could sequester up to 217 gigatons of CO2 in 75 years.
Climate Crisis Blog
