Cave data shows the Arctic was permafrost-free when Earth was 4.5˚C warmer, hinting at what rising temperatures could bring.

Scientists have found evidence that the Asian continent was free of permafrost all the way to its northerly coast with the ...

Invasive species cost the North American economy $26 billion a year. By outcompeting local plants or animals, invaders reduce ...

An 800-pound Alaska brown bear named Tundra just got the largest dental crown ever made. The bear is so big that the ...

The Trump administration announced a plan on June 17 to open nearly 82% of the National Petroleum Reserve-Alaska to oil and ...

Warming global climate is changing the vegetation structure of forests in the far north. It’s a trend that will continue at ...

Caribou, migrating birds and many other types of wildlife rely on this expanse of wetlands and tundra. Humanity and the ...