Eons

From the dawn of life in the Archaean Eon through the Mesozoic Era — the so-called “Age of

Episodes

  • When Mammals Only Went Out At Night: asset-mezzanine-16x9
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    When Mammals Only Went Out At Night

    S4 Ep10 |
    Scientists discover dinosaurs and tiny mammals' sleep habits are different than thought.
  • How Horses Took Over North America (Twice): asset-mezzanine-16x9
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    How Horses Took Over North America (Twice)

    S1 Ep53 |
    Horses vanished from North America for 10,000 years until a mammal brought them back.
  • When Birds Had Teeth: asset-mezzanine-16x9
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    When Birds Had Teeth

    S1 Ep52 |
    How did Archaeopteryx relate to today’s birds? Its teeth provide a major clue.
  • When Fish Wore Armor: asset-mezzanine-16x9
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    When Fish Wore Armor

    S1 Ep51 |
    420 million years ago, some fish wore armor – and it may have served a surprising purpose.
  • The Mystery of the Eocene’s Lethal Lake: asset-mezzanine-16x9
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    The Mystery of the Eocene’s Lethal Lake

    S1 Ep50 |
    In the 1800s, miners found beautifully preserved fossils of animals from the Eocene.
  • When Fish First Breathed Air: asset-mezzanine-16x9
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    When Fish First Breathed Air

    S1 Ep46 |
    Before a group of fish could live on dry land, they acquired the ability to breathe air.
  • When Insects First Flew: asset-mezzanine-16x9
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    When Insects First Flew

    S1 Ep49 |
    Insects were the first animals to fly. Scientists are still working on how it happened.
  • FAQs From Our First Year: asset-mezzanine-16x9
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    FAQs From Our First Year

    S1 Ep48 |
    To celebrate our first anniversary together, we’d like to answer some of your questions.
  • Where Did Viruses Come From?: asset-mezzanine-16x9
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    Where Did Viruses Come From?

    S1 Ep45 |
    Where did viruses come from and how did they evolve? Are viruses alive?

About Eons

Join hosts Hank Green, Kallie Moore, and Blake de Pastino as they take you on a journey through the history of life on Earth. From the dawn of life in the Archaean Eon through the Mesozoic Era — the so-called “Age of Dinosaurs” -- right up to the end of the most recent Ice Age.