Why Does This Mummy Have So Many Tattoos?

Extras

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  Can Birds Recognize Faces?

  Crows remembered the face of a person they considered a threat—even across generations.

  1:57
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  Einstein's Thought Experiment That Transformed Physics

  The faster you move, the stranger time becomes.

  2:10
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  How Einstein Changed the Way We Understand Gravity

  In 1912, Albert Einstein had a revolutionary idea.

  5:36
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  When Whales Could Walk (Español)

  Fósiles gigantes en el Sahara revelan nuevos secretos sobre la evolución de las ballenas.

  53:30
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  How Harvard Discovered It Has an Original Copy of the Magna Carta

  They paid only $27.50 for it from a London bookseller in 1946.

  3:13
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  What Fish Revealed About This Mysterious Grave

  Could these bones be the last remains of a legendary Viking army?

  2:46
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  The Science of Scratch-Offs: What Your Brain Can’t Resist

  You probably won’t win big playing the Lottery but your brain may want to keep trying.

  6:39
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  This Giant Telescope Will Reveal The Universe in Unbelievable Detail

  Go behind the scenes as NOVA visits the Vera Rubin Observatory in Chile.

  5:59
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  Why Are There Stone Tree Trunks in the Arctic?

  Fifty-million years ago these rocks were trees and this Arctic tundra was a steamy swap.

  2:50
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  This Massive Skeleton Belongs to an Ancient Whale

  At first, scientists thought it was a gigantic marine reptile.

  2:28