FEATURE: Giant craters in Canadian north caused by global warming

Climate change dramatically impacting permafrost in Northwest Territories

This story was originally published on  CBC News. To read the rest of this news worthy story, please visit http://www.cbc.ca/news/canada/north/feature-giant-craters-in-canadian-north-caused-by-global-warming-1.4267541?cmp=rss.

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