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Theresa Larkin, Associate professor of Medical Sciences, University of Wollongong

Big hair? Bald? How much difference your hair really makes to keep you cool or warm

Sun
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We have millions of hair follicles on our body, including around 100,000 on our scalp.

This might sound like a lot of hair, yet humans are described as “hairless”. We have evolved to be the only mammals with a relatively hairless body, but still with scalp hair.

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