Something Has Been Making This Mark For 500 Million Years

S6 · E1★ 0.0

How our deadliest parasite turned to the dark side

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Primates vs Snakes (An Evolutionary Arms Race)

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How the Rise of Social Insects Shrunk These Dinosaurs

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How Vertebrates Got Teeth... And Lost Them Again

S6 · E5★ 0.0

How Horses Went From Food To Friends

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Why We Only Have Ten Toes (It's a Long Story)