Quartz – The world’s first “negative emissions” plant has begun operation—turning carbon dioxide into stone

Climeworks just proved the cynics wrong. On Oct. 11, at a geothermal power plant in Iceland, the startup inaugurated the first system that does direct air capture and verifiably achieves negative carbon emissions. Although it’s still at pilot scale—capturing only 50 metric tons CO2 from the air each year, about the same emitted by a single US household or 10 Indian households—it’s the first system to convert the emissions into stone, thus ensuring they don’t escape back into the atmosphere for the next millions of years.