A pair of beavers work over some branches in shallow water south of Glennallen in central Alaska.

Ken Tape

Beavers are invading Alaska's Arctic tundra as it warms, transforming the landscape like wildfire. Satellite images show rivers turning into trains of lush ponds as beavers build their dams. The animals are taking advantage of climate change, but their dams could also accelerate warming.

Beavers are taking over the Alaskan tundra, completely transforming its waterways, and accelerating...

Continue Reading Photos from space show 11,000 beavers are wreaking havoc on the Alaskan tundra as savagely as wildfire