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In its search for life beyond Earth, NASA employs a "sky crane" maneuver to land the...
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The Vikings were among the fiercest warriors of all time, known for creating the ultimate...

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Virtual autopsies, 3-D fingerprints, and digital crime scenes are making crime-solving...
NOVA  ·  Episode 3914

Mystery of Easter Island


A team of scientists and volunteers test a theory on how the ancient stone statues were moved, using a 15-ton replica.

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