Iceland turns carbon dioxide to rock for cleaner air In the heart of Iceland's volcano country, 21st-century alchemists are transforming carbon dioxide into rock for eternity, cleaning the air of harmful emissions that cause global warming. The technology mimics, in accelerated format, a natural process that can take thousands of years, injecting CO2 into porous basalt rock where it mineralises, capturing it forever. IMAGES of the Hellisheidi geothermal power plant AND SOUNDBITES of Edda Sif Aradóttir, 38, Deputy Managing Director at Orkuveita Reykjavikur (public electricity/hot water provider) and Project Manager for Carbfix and Sandra Ósk Snaebjörnsdóttir, 36, geologist for CarbFix