The Arctic is rapidly changing from the climate crisis, with no "new normal," scientists warn. Wildfires and permafrost thaw are making the tundra emit more carbon than it absorbs.

The Arctic experienced its second-hottest year on record, according to a NOAA report. The Arctic tundra has become a source of emissions, rather than a carbon sink.

Asked whether the Arctic's shift from carbon sink to source might be permanent, Rogers said it remains an open question. While boreal forests further south still serve as carbon sinks, northern ...

In the 2024 Arctic Report Card, released Dec. 10, we brought together 97 scientists from 11 countries, with expertise ranging from wildlife to wildfire and sea ice to snow, to report on the state ...

The surrounding frozen tundra does not immediately look like the next frontline in a looming global conflict. But leaders in multiple countries have put a spotlight on the Arctic.

The Arctic has been warming as much as four times faster than anywhere in the world. After storing carbon dioxide in frozen soil for millennia, the Arctic tundra is being transformed by frequent ...

Kazutoshi Sato, Kazu Takahashi, Jun Inoue. Impact of Canadian wildfires on aerosol and ice clouds in the early-autumn Arctic. Atmospheric Research, 2025; 315: 107893 DOI: 10.1016/j.atmosres.2024. ...