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NATURE | Animal Odd Couples | The Benefits of Friendship | PBS (#3003)

Primatologist and evolutionary biologist Dr. Lauren Brent discusses her research on the social behavior of nonhuman primates and the benefits of friendship. An investigation into unlikely... 01:41

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Nature

NATURE, television's longest-running weekly natural history series, has won more than 200 honors from the television industry, parent groups, the international wildlife film community and environmental organizations, including the only...

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