Scientists warn of melting permafrost if temperatures continue to riseA global temperature rise of 1.5C would be enough to start the melting of permafrost in Siberia, scientists warned on Thursday. Feb 22, 2013
Thawing permafrost may speed global warming: studyWASHINGTON – Global warming could cause up to 60 percent of the world's permafrost to thaw by 2200 and release huge amounts of carbon into the atmosphere that would further speed up climate change, a study released Wednesday warned. Feb 17, 2011
