Arctic Report Card, 97 scientists from 11 countries, with expertise ranging from wildlife to wildfire and sea ice to snow, describe the rapid changes they’re witnessing across the Arctic and the ...

The Arctic is now a carbon source, instead of a carbon sink, according to a new report released by NOAA. Warming temperatures ...

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

For millennia, the tundra regions of the Arctic drew in carbon from the atmosphere and locked it in permafrost. That is the ...

The transition of the Arctic from a carbon sink to a carbon source is one of the dramatic changes in the Arctic that are ...

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

NOAA scientists and affiliated researchers have documented profound change in the frozen north as U.S. government science ...

The Arctic tundra has historically helped reduce global emissions. But rising temperatures and wildfires in the region are ...

Increasingly frequent and severe wildfires have become a yearly concern for many Arctic communities, and a chapter of a new U ...

Wildfires and thawing permafrost are causing the region to release more carbon dioxide than its plants remove, probably for ...

After locking carbon dioxide in its frozen soil for millennia, the Arctic tundra is undergoing a dramatic transformation, ...

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