Warming Arctic ground could release vast methane stores with serious climate consequences.

Deep beneath the frozen ground of the Arctic, vast reserves of methane have been trapped for tens of thousands of years. But as rising temperatures thaw permafrost and destabilize the seafloor, scientists fear this potent greenhouse gas could begin escaping into the atmosphere at accelerating rates.
Methane is more than 25 times stronger than carbon dioxide at trapping heat. If released in large quantities, experts say it could amplify global warming and trigger unpredictable climate feedbacks worldwide.








