Sub-Arctic timebomb: warming speeds CO2 release from soil

Climate change is speeding up the release of carbon dioxide from frigid peatlands in the sub-Arctic, fuelling a vicious circle of global warming, according to a study to be published Thursday.

An increase of just 1.0 degree Celsius (1.8 degrees Fahrenheit) over current average temperatures would more than double the CO2 escaping from the peatlands.