Alaska Highway, Southern Yukon Permafrost Collapse

There are over 5 billion acres of permafrost across the Great North. It can be over a half mile deep in North America and nearly a mile deep in Siberia. Over 1 billion acres is currently at risk of abrupt collapse and from 2003 to 2017, on average every year permafrost thaw is emitting 2.3 gigatons CO2. Methane has yet to be quantified.