Episodes
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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.
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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. - Embedded Video LinkImage
When Birds Had Teeth
S1 Ep52 |How did Archaeopteryx relate to today’s birds? Its teeth provide a major clue. - Embedded Video LinkImage
When Fish Wore Armor
S1 Ep51 |420 million years ago, some fish wore armor – and it may have served a surprising purpose. - Embedded Video LinkImage
The Mystery of the Eocene’s Lethal Lake
S1 Ep50 |In the 1800s, miners found beautifully preserved fossils of animals from the Eocene. - Embedded Video LinkImage
When Fish First Breathed Air
S1 Ep46 |Before a group of fish could live on dry land, they acquired the ability to breathe air. - Embedded Video LinkImage
When Insects First Flew
S1 Ep49 |Insects were the first animals to fly. Scientists are still working on how it happened. - Embedded Video LinkImage
FAQs From Our First Year
S1 Ep48 |To celebrate our first anniversary together, we’d like to answer some of your questions. - Embedded Video LinkImage
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.
