From the comments -
"The IPCC's scientists said the permafrost would be stable for another 50 to 100 years. And now, the months of hell are opening at the End of the World (Yamal) ! Conlusion 1 : global warming is speeding up and the IPCC forcasts are too optimistic. We have to act much faster than planned. Conclusion 2: We better start thinking hard for a solution for the thawing/exploding permafrost or we'll all be globally cooked much sooner than expected."