Great Yellowstone Thaw
How Nature SurvivesDVD - 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℗ʻF in winter to almost 100℗ʻF 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.
Publisher: Arlington, VA : PBS, 
Copyright Date: 017
Branch Call Number: 591.5 GRE
Characteristics: 1 videodisc (approximately 180 minutes) : DVD video, digital ; 4 3/4 in digital,optical video file,DVD video,region 1
Alternative Title: How nature survives