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The Failure That Led to the Columbia Tragedy
During the construction of the ISS, tragedy struck the Space Shuttle Columbia and its seven-member crew.
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53:39
Do speech buttons really allow dogs to talk to us? Scientists investigate.
53:39
New evidence sheds light on the remarkable life—and mysterious collapse—of the ancient jungle city.
53:31
What if violent asteroid impacts actually jump-started life on Earth? Explore a dramatic theory.
53:41
See how ingenuity and teamwork keep the crew alive and doing science 250 miles above Earth.
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53:40
Astronauts and Mission Control relive terrifying moments during construction of the ISS.
53:28
Find out why deadly flash floods are on the rise and how we can protect ourselves from them.
53:21
Explore mysterious 9,000-year-old Stone Age megastructures found in the Arabian Desert.
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53:32
Discover how two revolutionary ancient inventions changed the course of humanity forever.
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53:25
Follow ancient humans’ journey into an icy and perilous new land.
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53:27
Discover how Homo sapiens outlasted Neanderthals – and how they helped make us who we are today.
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53:25
Follow Homo sapiens as they venture out of Africa and spread farther than any other human species.
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53:32
Trace the remarkable origin story of Homo sapiens and the crucial moments that shaped our species.