The Bright Side: How crushed stone could help fight climate change

In a fresh approach to tackling climate change, finely ground rock is being sprinkled across large expanses of farmlands worldwide in a bid to turbocharge a natural geological process called weathering. The process can lock away carbon dioxide from the air or soil as bicarbonate, and eventually limestone, and is being used or trialled in agricultural settings from tea plantations in India’s Darjeeling to US soy and maize fields.