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Eons
When a Tiny Land Bridge Triggered an Ice Age
Season 8
Episode 8
On land, the Isthmus of Panama kicked off possibly the greatest natural experiment in the history of life on Earth. In the water, this narrow strip of land did something completely different: it divided. And that division would have a much bigger effect on the planet than the land connection ever did.
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Around 300 million years ago sails were all the rage, but we're still not sure what they were for.
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Life begins to rebound after the destruction of the mass extinction ending the Permian Period.
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An extinction in the Middle Permian decimates life, from a fossil reef to our ancient relatives.
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The mystery of what non-flying dinosaurs were doing with their feathered wings has a new hypothesis.