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Scientists race to uncover a site in the Rockies packed with fossil mammoths.
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Art experts investigate if a portrait sold in 1998 is actually a lost Leonardo painting.
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NOVA reveals how the Allies used special aerial photos to deal a dire blow to the Nazi.
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A new forensic investigation of a 5,000-year-old mummy reconstructs his death.
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Experts recreate the bold feat of "dambuster" pilots who used bouncing bombs.
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An eyewitness account and investigation of the earthquake, tsunami, and nuclear crisis.
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An eyewitness account and investigation of the earthquake, tsunami, and nuclear crisis.
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Are we finally on the brink of a clean energy revolution? Airs April 20, 2011 on PBS
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Airs Wednesday, June 13, 2012 at 9:00 p.m. ET/PT. Check your local listings.
