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Easter Island Origins Preview
Surprising new evidence is rewriting the story of the giant stone heads of Easter Island.
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When Whales Could Walk Preview
Giant fossils uncovered in the Sahara Desert reveal new secrets of how whales evolved.
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Hunt for the Oldest DNA Preview
Follow the quest to recover DNA millions of years old for the very first time.
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Great American Eclipse Preview
Explore the spectacular cosmic phenomenon of a total solar eclipse.