Great Yellowstone Thaw: Season 1 (2017)

Yellowstone is home to North America's most iconic wildlife, and every year these animals must survive the Thaw -- one of the harshest seasonal changes on Earth when temperatures can swing from minus 40°F in winter to almost 100°F in summer.

Learn how animals cope with this range and witness the impact on individual families of wolves, grizzly bears, beavers, and great gray owls.