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Eons
When We First Walked
Season 1
Episode 57
Fossilized footprints have proved that human ancestors were already striding across the landscape 3.6 million years ago. But who started them on that path? What species pioneered this style of locomotion? Who was the first to walk?
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9:15
Yellowstone contains some of North America's most amazing fossil deposits.
9:08
Horses vanished from North America for 10,000 years until a mammal brought them back.
9:37
420 million years ago, some fish wore armor – and it may have served a surprising purpose.
7:59
In the 1800s, miners found beautifully preserved fossils of animals from the Eocene.
8:38
Insects were the first animals to fly. Scientists are still working on how it happened.
9:20
To celebrate our first anniversary together, we’d like to answer some of your questions.
6:54
Tyrannosaurus rex had tiny arms. How did this happen, and why did it keep them?
8:40
Before a group of fish could live on dry land, they acquired the ability to breathe air.
7:29
Where did viruses come from and how did they evolve? Are viruses alive?
9:07
Why the Triassic was full of creatures that look a lot like other, more modern species.