The Arctic is shifting from a frozen vault of ancient carbon to an active source of greenhouse gases, and that flip threatens ...

White spruce trees dot the tundra in the Brooks Range. These trees are better able to survive harsh conditions due to heavy winter snowfall, a result of Arctic sea ice loss. (Photo courtesy Colin ...

Anywhere else in the world, more trees would be a blessing. But in the far north of Alaska, they’re a reckoning. As the Arctic warms up to four times as fast as the rest of the planet, white spruce ...

COAT's weather stations, even those located far beyond today's forest distribution on the Varanger Peninsula (green areas on the map), have experienced temperatures above the 10-degree threshold ...