Rock weathering, the breakdown and dissolving of rocks and minerals caused by their exposure to water, air and biological life, is a major regulator of Earth's atmospheric CO2 levels and climate. Throughout Earth's history, rock weathering has been faster during warm periods with increased atmospheric CO2 levels.

Rock weathering, the breakdown and dissolving of rocks and minerals caused by their exposure to water, air and biological life, is a major regulator of Earth’s atmospheric CO2 levels and climate. Throughout Earth’s history, rock weathering has been faster during warm periods with increased atmospheric CO2 levels.

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