Agence France-Presse: Scientists have turned carbon dioxide into stone in a matter of months by pumping it deep underground, offering a revolutionary new way of storing the greenhouse gas to tackle climate change. The pioneering experiment in Iceland mixed CO{-2}emissions with water and pumped it hundreds of metres underground into volcanic basalt rock where it rapidly turned into a solid. We need to deal with rising carbon emissions. This is the ultimate permanent storage turn them back to stone, said Juerg Matter,...