* Over Arctic, methane up 0.6 pct in 2008, 2007 * Rate outpaces global 2007 rise -- may signal local thaw * Permafrost stores vast amounts of greenhouse gases By Alister Doyle, Environment ...

"It's a totally different paradigm from the way anyone thinks about methane," Walter Anthony said. Because methane is 25 to 34 times more potent than carbon dioxide, the discovery brings new concerns ...

OSLO (Reuters) - A rise in concentrations of a powerful greenhouse gas over the Arctic after a decade of stability is stirring worries about a possible thaw of vast stores trapped in permafrost, ...

A more thorough way to estimate how much the world's boreal-Arctic wetlands and lakes contribute to current and future harmful methane emissions has been developed in part by University of Alberta ...

As the Arctic gets warmer, large quantities of greenhouse gas could be released from the sediment at the bottom of lakes, a source that has previously been overlooked. The frozen soil of the Arctic ...

A 2021 pledge by more than 100 nations to cut methane emissions from anthropogenic sources 30 percent by 2030 might not slow global warming as much as projected, as new research shows that feedbacks ...

The Arctic is predicted to warm faster than anywhere else in the world this century, perhaps by as much as 7°C. These rising temperatures threaten one of the largest long-term stores of carbon on land ...