A cave lion cub and a massive mammoth's foot also were recently found in melting permafrost.
The work follows unprecedented flooding caused by melting of the surrounding permafrost.
All is not lost, researchers warn, but we need to act swiftly.
There was skepticism from at least two of the three-judge panel about whether they could hear a challenge before the rule is finalized. Judges Griffith and Kavanaugh both questioned whether the rule making was "extraordinary" and requiring of immediate court review.
Climate change stands to trigger a regime change in Alaska, with far-reaching consequences as frozen ground thaws beneath us, a prominent University of Alaska Fairbanks scientist told the Tanana Chiefs Conference on Tuesday. "When you thaw the permafrost, everything falls apart," said hydrologist Larry Hinzman.
In order to become once again the owners of our destiny and future, we must implement a profound transformation of thought: we need to create a new relationship between the power of human beings and the ecological system of our planet.
This is serious, and unexpected observations concerning the stability of Arctic methane stores, even globally trivial ones, should bring us back to a vastly more important public conversation from last year.
Global warming is thawing patches of permafrost, releasing carbon dioxide and methane — both greenhouse gases — into the