Great Yellowstone thaw. How nature survives
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.