[aerohead]

Originally Posted by freebeard

NEVER is a long, long time. You have proof?

NEVER happened before? It goes back eight years. Does that count? Try

gizmodo.com/methane-is-blowing-more-holes-in-the-arctic

Methane has a specific chemical signature which can be distinguished from all other hydrocarbons.
There is nothing that has been discovered in the paleoclimate record which recognizes thawing permafrost as a phenomena ever witnessed before by humans.