The world’s first factory to capture carbon dioxide from the air and store it permanently underground has begun operating in Iceland. The Orca plant set up by Swiss startup Climeworks AG can capture 4,000 tons of CO2 a year. Mixed with water and pumped underground, it turns into stone naturally in less than two years. Climeworks, which sees the plant as a steppingstone for expansion to megaton removal capacity by the second part of this decade, says the technology can easily be replicated worldwide. “Achieving global net-zero emissions is still a long way to go, but with Orca, we believe that Climeworks has taken one significant step closer to achieving that goal,” says Christoph Gebald, co-CEO and co-founder of Climeworks.