Carbon capture and storage, the prohibitively expensive climate mitigation strategy, is back on the Coalition’s agenda. Yet the facts speak for themselves. Of Shell’s total emissions of 656 million tonnes a year, its two CCS plants remove just 5 million tonnes a year from the atmosphere; the few plants in the world only exist because of huge government subsidies; while European oil companies use CCS primarily as a “feel-good” marketing message. Tim Buckley reports.