Tune in for "Great Yellowstone Thaw" starting June 21
Great Yellowstone Thaw
Journey to Yellowstone, where wildlife survives one of the greatest seasonal changes.
Journey with Kirk Johnson to Yellowstone, where wolves, grizzlies, beavers and Great Gray owls survive one of the greatest seasonal changes on the planet. As the temperature swings 140 degrees, cameras capture how the animals cope.
Tune in Wednesdays, beginning June 21, at 9:00 p.m. on Nine PBS.