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S02E02 - "Dirty Secrets"
Aired on Apr 23, 2008, 4:00 PM
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Description
It's like something out of science fiction. Unsettling transformations are sweeping across the planet, and clue by clue, investigators are assembling a new picture of earth. They suspect we have entered a time of faster global change than any human being has ever witnessed. Where are we headed? What can we do to alter the course?
