a switch, turn everything off and kill our emissions dead, so even to get to net zero, we re going to have to start sucking huge amounts of co2 back out. dan simmons and nick kwek have been looking into carbon capture technologies to see if they really could help us turn back the clock. clock ticks. for this film, we are focusing on co2 the carbon that is produced mainly by burning fossil fuels and is the biggest contributor to rising temperatures. for decades, we ve been able to capture carbon dioxide at scale at the source it s produced. in 201a, this was the first power station to use what s called carbon capture and storage. the flue gases are diverted to a purpose built facility where the co2 is stripped away in a chemical process. it s then compressed and stored two miles underground. the system here stops around two thirds of the co2