Airscrubbing machines gain momentum, but long way to go. CATHY BUSSEWITZ November 8, 2021 GMT. 1 of 5. In this undated image provided by Climeworks AG shows a geothermal power plant near Reykjavik, Iceland. The Iceland plant, called Orca, is the largest such facility in the world, capturing about 4,000 metric tons of carbon dioxide per year. (Arni .