Rapid Arctic sea ice loss could triple the rate of warming over northern Alaska, Canada and Russia and trigger permafrost thawing that unleashes extremely potent greenhouse gases, according to a new study.
“Our study suggests that, if sea ice continues to contract rapidly over the next several years, Arctic land warming and permafrost thaw are likely […]

Despite international levels to curb their growth, global emissions of two key greenhouse gases — carbon dioxide and methane — rose sharply last year and fears are that melting permafrost might be partly responsible for the latter, federal scientists reported.
“Atmospheric carbon dioxide, the primary driver of global climate change, increased by 0.6 percent, or 19 […]