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 ...

These trees were once part of a thriving forest, but then the cooling climate entombed them under thick layers of mountain ice.

The temporal and spatial snow cover dynamics is the primary factor controlling the plant communities' composition and biogeochemical cycles in arctic and alpine tundra. However, the relationships ...

In July, the Mount Rainier white-tailed ptarmigan was officially listed as threatened by the U.S. Fish and Wildlife Service ...