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E1 • Birth of the Sky

1. 57min
2. TV-PG
3. CC
4. HD

4.5 billion years ago, Earth was a very different place. How did our blue sky come to be?

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E2 • Frozen

1. 58min
2. TV-G
3. CC
4. HD

Ancient Earth was once a giant snowball cloaked in ice. How did life survive and thrive?

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E3 • Life Rising

1. 57min
2. TV-G
3. CC
4. HD

How did organisms make the leap to land? Scientists explore how the earliest life emerged.

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E4 • Inferno

1. 57min
2. TV-G
3. CC
4. HD

252 million years ago, the most devastating mass extinction of all time took place.

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E5 • Humans

1. 59min
2. TV-G
3. CC
4. HD

How exactly did a dinosaur-filled Earth give rise to primates and, eventually, humans?