(Airs Sunday, December 21) NATURE presents a breathtaking look at wintertime deep within Yellowstone, America's first national park.
Dec 15th, 2008 | 26 comments | 19,293 Views

(Airs Sunday, December 21) NATURE presents a breathtaking look at wintertime deep within Yellowstone, America's first national park.
Learn more about grizzly bears with these useful web sites and books.
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