Climeworks, a climate startup from Switzerland, has retrofitted a geothermal power plant in Iceland to actively remove carbon dioxide (CO2) from the air whilst simultaneously generating power. The technique works by separating the CO2 from the air and then pumping it into water. From there, the water is channelled underground where basalt rock reacts with the CO2 to form minerals within two years. The minerals will lock the CO2 in for millions of years.
