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Curly and Cool: How curly hair keeps the brain from overheating

Humans are unique among mammals in that their bodies are almost hairless but their scalps are covered in tresses. According to a new study, curly hair evolved to offer the strongest defence against the suns radiative heat while reducing the need to perspire and keep water in the body
Tina Lasisi Nina Jablonski Pennsylvania State University Penn State Pennsylvania State Urly Hair

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