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Mark Carey
Mark Carey



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Evolution of hair?

Why do we have hair on our heads? We know that we have evolved from creatures who did not walk upright, and were covered with hair. So apart from a little hair on our arms, legs, etc., why do we only have hair on our heads? And why does it keep getting longer? Is there an evolutionary reason for this? Just curious.

Posted by Mark at December 31, 2003 11:42 AM | TrackBack

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6 08/19/09 12:36 EDT jumbo: i have hair around my ...View latest post