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Brains are good for more than acing exams. Turns out, nerdy noggins also help primates like us live longer, anthropologists say. Scientists have long pondered the reason for humans' and other primates' relatively hefty heads.
Some primates have evolved big brains because their extra brainpower helps them live and reproduce longer, an advantage that outweighs the demands of extra years of growth and development they spend reaching adulthood, anthropologists from Duke University and the University of Zurich have concluded in a new study.