Curly hair kept early humans cool and made our brains bigger

Scientists testing different textures of human hair have found the curlier it is, the better it is at protecting us from heat and solar radiation.

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Curly hair kept early humans cool and made our brains bigger

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Curly hair may have given early humans a key evolutionary

Why curly hair was an evolutionary advantage

Curly hair evolved to keep early humans cool

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Curly hair may have evolved to keep early humans cool, study

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