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Eons

Animals Are Older Than We Thought

Season 6 Episode 13 | 11m 57s

What are animal-like fossils doing in rocks a billion years old, and what does that mean for our understanding of their evolution and geologic time itself? Turns out, there might've been a long, slow-burning fuse that ultimately ignited the Cambrian Explosion.

Aired: 02/05/24
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Episode: S7 E18 | 9:41
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Episode: S7 E17 | 8:10
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Why plate tectonics don't make sense.
Episode: S7 E16 | 12:38
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Episode: S7 E15 | 9:59
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Episode: S7 E14 | 10:09
Watch • 10:39
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Episode: S7 E13 | 10:39
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