permafrost1927-2005c

Permafrost thaw’s runaway effect on carbon release – Tim Radford

An international team of scientists has settled one puzzle of the Arctic permafrost and confirmed one long-standing fear: the vast amounts of carbon now preserved in the frozen soils could one day all get back into the atmosphere. Since the Arctic is the fastest-warming place on the planet, such a release of greenhouse gas could only accelerate global warming and …