NOVA
Making Stuff Colder Preview
Host David Pogue asks if cold holds the key to technology that can improve our lives.
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Sponsorship
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Great Cathedral Mystery Preview
Master craftsmen explore how Florence’s monumental dome was built nearly 600 years ago.
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Escape from Nazi Alcatraz Preview
A crack team rebuilds a glider that POWs hoped to catapult off the top of Colditz Castle.
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Asteroid: Doomsday or Payday? Preview
Will future asteroids trigger massive extinctions—or be mined for precious minerals?
NOVA
Cold Case JFK Preview
Can modern forensic science uncover fresh clues about the assassination of JFK?