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Nature
Alligator Versus Python
Alligators were once the undisputed reptile kings of the Everglades. But who would win a battle now -- alligator or python? It all depends on which one is bigger. "Invasion of the Giant Pythons" premieres Sunday, February 21, 2010 on PBS.
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Follow a female mountain lion in the Montana mountains over the course of a decade.
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See how the Arctic’s most enigmatic animals are coping as the sea ice melts.
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After drought, the rains finally come. But can Katavi survive the flooding?