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NOVA
Decoding the Universe: Cosmos
Season 51
Episode 8
How big is the universe? Will it ever end? Why is so much of it made of mysterious dark matter and energy? See how mind-bending discoveries over the past 50 years have revolutionized our understanding of the universe.
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53:15
How did Earth give rise to humans? See what made our species' existence possible.
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53:45
How did life bounce back after a cataclysmic extinction wiped out some 90% of all species?
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53:47
See how life made the leap to land, turning a barren landscape into a lush, green world.
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53:47
See how Earth transformed from a barren hellscape to a planet capable of sustaining life.
53:31
Who created the Nazca lines and why? New clues to one of the greatest ancient enigmas.
53:43
Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.
53:16
Sir David Attenborough explores a site with traces of ancient mammoths and Neanderthals.
53:30
In the Arctic, enormous releases of methane, a potent greenhouse gas, threaten the climate