The Arctic National Wildlife Refuge in Alaska has long protected survivors of the Ice Age, but this frozen fortress is melting due to climate change. For the caribou, musk oxen, polar bears and Arctic foxes, the Ice Age is slipping away.
For more than a quarter-century, NATURE has brought the beauty and wonder of the natural world into American homes, becoming in the process the benchmark of natural history programs on television. Watch Wednesdays, 8/7c.
Dozens of your favorite THIRTEEN and PBS programs are available to watch on-demand on many popular platforms.
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