Melting permafrost releases greenhouse gases

A UN report has warned that carbon dioxide and methane released from melting permafrost could push the climate past a tipping point and dangerously accelerate global warming. Broadcast: 28/11/2012, Reporter: Tony Jones http://www.abc.net.au/lateline/conten… Thawing permafrost may amplify global warming, U.N. reports http://www.latimes.com/news/science/s… Policy Implications of Warming Permafrost http://www.unep.org/pdf/permafrost.pdf