Eons

The Mystery of South America's False Horses

How did the "false horse," Thoatherium, and its relatives survive when their hoofed legs seemed to be adapted for an ecosystem that wouldn't exist for another 12 million years?

The Mystery of South America's False Horses

9m 45s

  • Webs vs wings: The arms race of the air: asset-mezzanine-16x9

    Webs vs wings: The arms race of the air

    S7 E17 - 8m 10s

    Spiders and their ancestors have been driving an arms race that began before either stepped foot onto land and resulted in the first powered flight on Earth. But how did this competition of webs versus wings drive such a massive evolutionary adaptation into an entirely new realm?

  • The Graveyard at the Center of the Earth: asset-mezzanine-16x9

    The Graveyard at the Center of the Earth

    S7 E16 - 12m 38s

    Scientists have been trying to solve the mystery of why plate tectonics works the way it does for over a hundred years. And they might have just uncovered a key to cracking it.

  • Why Wasn't There A Second Age of Reptiles?: asset-mezzanine-16x9

    Why Wasn't There A Second Age of Reptiles?

    S7 E15 - 9m 59s

    An asteroid impact triggered the K-Pg mass extinction, wiping out the non-avian dinosaurs, ending the Age of Reptiles, and ushering in the Age of Mammals. But why was it the mammals who triumphed?

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