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What the remains of Kennewick man reveal with Doug Owsley
6:00
One of the most complete prehistoric skeletons in North America is known as Kennewick Man.
An Impossible Task
2:34
Scientists demonstrate the challenges in reconstructing DNA from a Neanderthal bone.
The Dangers of Genetic Isolation
2:05
Witness the dangers of genetic isolation exemplified by the duck-billed platypus.
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