Climate change is warming the Arctic tundra about four times faster than the rest of the planet. Now, a study suggests that rising temperatures will spur underground microbes there to produce more ...

A new international study involving researchers from the University of Gothenburg shows that vegetation in the Arctic is changing rapidly as species from nearby forests spread into the tundra. This ...

An ancient fossilized forest in Montana is reemerging 600 feet higher than the present-day tree line after spending the last 5,500 years encased in alpine tundra. But as temperatures continue to warm, ...

The warming climate shifts the dynamics of tundra environments and makes them release trapped carbon, according to a new study published in Nature. These changes could transform tundras from carbon ...

Rapid climate change is upending plant communities in the Arctic, with species flourishing in some areas and declining in others, according to a new study in Nature. The decades-long investigation, ...

Foreboding environmental milestones abounded again this year in the Arctic, where experts say dramatic climate shifts are fundamentally altering the ecosystem and how it operates. One recent turning ...

A member of a fire crew makes their way to the Riley Fire in Denali National Park and Preserve, AlaskaPaul Ollig/National Park Service via AP From Alaska to Siberia, the Arctic is changing so rapidly ...

Posts from this topic will be added to your daily email digest and your homepage feed. It’s a vicious cycle. Rising temperatures are stoking wildfires in the Arctic, which is leading to more of the ...

WASHINGTON—The icy region at the top of the globe, lashed by wildfire and pelted with increasingly heavy precipitation, has tipped into “uncharted territory,” scientists reported Tuesday. The Arctic ...

A trip to Alaska’s most dramatic wilderness, where mammoths once roamed – and today, one of North America’s great wildlife ...