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NOVA
Dino Birds
Season 52
Episode 3
Why are birds the only dinosaurs still alive today? Rare fossil discoveries are revealing the secrets of bird evolution, telling the story of how some resilient feathered dinos became the vast array of colorful bird species that fill our skies.
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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