Mark Williams (UK/Canada) spots an Arctic fox in the distance, moving across the tundra. A glimpse of movement across the treeless tundra caught Mark’s eye. Through binoculars he spotted an Arctic fox ...

Johan Fredrik Wallén remembers not seeing a single Arctic fox all summer during fieldwork in the Swedish tundra almost 20 years ago. "Now, we usually see them," he says.

Arctic foxes can be found in tundra habitat throughout the Arctic Circle. In North America, they appear from western Alaska through northern Canada. They’re not listed as endangered, ...

But warming air temperatures in the Arctic are breaking down permafrost across the tundra, in some cases, severely. The Arctic report, for example, showed Alaskan permafrost temperatures in 2024 ...