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I've published an article on the evolution of long head hair in humans. The following is the abstract: In many humans, head hair can grow to a much greater length than hair elsewhere on the body. This is a "derived" form that evolved outside Africa and probably in northern Eurasia. The ancestral form, which is... Read More
Crystal Gayle, American country music singer (source). In humans of Eurasian origin, head hair can grow down to the mid-back and even farther. Long silky hair must have evolved relatively late, certainly no earlier than the last 50,000 years. All of us are born pale, and this infant pallor is striking in otherwise dark-skinned families.... Read More
Female and male bush spirits, Côte d’Ivoire The polygyny rate varies considerably among human populations, being highest (20 to 40% of all sexual unions) in the agricultural societies of sub-Saharan Africa and Papua-New Guinea. Such high rates have consequences. The average man will have to wait for a wife until well into adulthood. The average... Read More