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NOVA
The Planets: Inner Worlds
Season 46
Episode 12
The rocky planets—Mercury, Venus, Earth and Mars—were born of similar material around the same time. Yet only one of them supports life. Were Earth's neighbors always so extreme? And is there somewhere else in the solar system life might flourish?
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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.
53:32
Discover how two revolutionary ancient inventions changed the course of humanity forever.
53:25
Follow ancient humans’ journey into an icy and perilous new land.
53:27
Discover how Homo sapiens outlasted Neanderthals – and how they helped make us who we are today.
53:25
Follow Homo sapiens as they venture out of Africa and spread farther than any other human species.
53:32
Trace the remarkable origin story of Homo sapiens and the crucial moments that shaped our species.
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53:27
Forensic science is put to the test after the first-ever staged multi-vehicle pileup.
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53:29
A first-of-its-kind experiment aims to stage a multi-vehicle pileup to gain new data on car safety.
1:36:42
After centuries of pseudoscience, researchers examine the causes of racial health disparities.
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53:41
Follow scientists in a quest to understand how complex forest ecosystems can help cool our planet.