With fine warm underfur making up 70% of its coat and furry feet soles, the arctic fox is the best insulated mammal on earth. Fennec foxes live deep in the Sahara Desert and only start to pant ...

A young Arctic fox has walked across the ice from Norway's Svalbard islands to northern Canada in an epic journey, covering 3,506 km (2,176 miles) in 76 days. "The fox's journey has left ...

The Arctic Circle, an extraordinary region covering 4% of Earth’s surface, is a land of extremes where the sun can shine at ...