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Great Yellowstone Thaw

Wednesday, June 21, 9pm: Journey to Yellowstone, where wildlife survives one of the greatest seasonal changes on the planet.

Great Yellowstone Thaw

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.

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