Volcanic rocks help turn carbon emissions to stone — and fast

Pumping CO2 into basalt offers advantage over similar methods to combat climate change

Iceland rocks

HARD ROCK  A pilot program in Iceland successfully transformed carbon dioxide emissions from a geothermal power plant into solid rock by injecting the greenhouse gas into basaltic lava rocks (shown here).

Sigurdur Gislason

A new technique turns climate-warming carbon emissions to stone.