Methane is 25 times more potent a greenhouse gas than carbon – and scientists have discovered there is a potentially disastrous amount of methane trapped under relatively thin ice in the east Siberian arctic shelf. New research measures the global impact the gas could have on global warming… and it’s not very optimistic. Fred Pearce is environmental consultant for New Scientist.
Arctic Methane Belch Could Prove Costly

NASA/Kathryn Hansen via NASA Goddard Space Flight Center's flickr