The Costa Rican rainforest, known as Corcovada, is a complex and fragile ecosystem at the mercy of the world's weather. Native home to toucans and macaws, Corcovada is also the refuge of one of the world's rarest and least known animals: the white-lipped peccary. But a change in the weather patterns threaten to change forever the future of these animals.

Sunday, 7/1/07 from 7-8 p.m. ET

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