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

Extras

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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.

  3:06
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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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  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
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  How Music is Made Up of Math

  Pythagoras saw a connection between math, music, and nature.

  2:01
• 

  Critical Condition: Health in Black America Preview

  After centuries of pseudoscience, researchers examine the causes of racial health disparities.

  0:30
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  How Deadly Was the Musket?

  A team of experts put an 18th-century musket to the test — revealing how deadly it really was.

  4:57
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  The World’s First Combat Submarine

  Its nickname was the “Turtle”.

  10:49
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  These Smart Glasses Know Who You Are, and Much More

  Two students created glasses that can identify people on the street, without them knowing.

  4:18