08/28/2026
Could rock weathering be accelerated to pull excess CO2 out of the atmosphere?
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. Current efforts to accelerate rock weathering are still too slow to affect the global carbon balance or to be economically viable at industrial scale.
To address this, researchers at the Wyss, Harvard Medical School’s Department of Systems Biology, and the Stanford University Doerr School of Sustainability showed that an engineered marine bacterium sped up the weathering of a silicate mineral in customized bioreactors with a continuous flow of seawater, boosting the amount of CO2 that was removed from the air.
By Benjamin Boettner (BOSTON) — 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 durin...