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Cold Case JFK Preview
Can modern forensic science uncover fresh clues about the assassination of JFK?
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Ice Age Death Trap Preview
Scientists race to uncover a site in the Rockies packed with fossil mammoths.
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Hunting the Edge of Space: Mystery of the Milky Way Preview
Airs Wednesday, November 28, 2012 at 9:00 p.m. ET/PT. Check your local listings.
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Ghosts of Machu Picchu Preview
Airs Wednesday, September 3, 2014 at 9:00 p.m. ET/PT. Check your local listings.
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Finding Life Beyond Earth Preview
Scientists are on the verge of answering one of the greatest questions: Are we alone?