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

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Join hosts Kallie Moore, Michelle Barboza-Ramirez, Gabriel Santos, 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. Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios