Wildfires and thawing permafrost are causing the Arctic region to release more carbon dioxide and methane than its plants ...

Rising temperatures, increasing precipitation, thawing permafrost and melting ice are pushing the Arctic outside its ...

From giant holes in Siberia to legions of beavers in Alaska, the Arctic is changing rapidly and accelerating the climate ...

Fires, intensified by climate change, release carbon trapped in soil and plants. More frequent infernos have now transformed ...

The news that the frigid Arctic tundra ringing the polar region has switched from being a net absorber, or "sink," of ...

The last nine years have been the warmest ever recorded in the Arctic Circle, and this year saw a number of new milestones in ...

The tundra regions have become a net carbon source rather than a carbon sink, the result of permafrost warming, increased ...

Arctic tundra is releasing greenhouse gases into the atmosphere as hotter temperatures melt frozen ground and wildfires ...

A caribou is seen on June 12, 2013, in Gates of the Arctic National Park and Preserve ... Yet, the changes underway in the ...

Arctic tundra, which has stored carbon for thousands ... Arctic seals are doing okay. Caribou, not so much Ice seal populations remain healthy despite warming water and declining sea ice.

The shift from storing carbon dioxide to releasing it could have widespread implications for climate change, according to ...