Methane gas likely spewing into the oceans through vents in sea floor
Wednesday, September 2, 2009 - 18:42
in Earth & Climate
Scientists worry that rising global temperatures accompanied by melting permafrost in arctic regions will initiate the release of underground methane into the atmosphere. Once released, that methane gas would speed up global warming by trapping the Earth's heat radiation about 20 times more efficiently than does the better-known greenhouse gas, carbon dioxide.