Sex, Time, and Power
How Women's Sexuality Shaped Human Evolution
Ranked #50 in Human Sexuality, Ranked #81 in Sexuality — see more rankings.
Why did big-brained Homo sapiens suddenly emerge some 150,000 years ago? The key, according to Leonard Shlain, is female sexuality. Drawing on an awesome breadth of research, he shows how, long ago, the narrowness of the newly bipedal human female's pelvis and the increasing size of infants' heads precipitated a crisis for the species.
Natural selection allowed for the adaptation of the human female to this environmental stress by reconfiguring her hormonal cycles, entraining them with the periodicity of the moon. The results, however, did much more than ensure our... more
Natural selection allowed for the adaptation of the human female to this environmental stress by reconfiguring her hormonal cycles, entraining them with the periodicity of the moon. The results, however, did much more than ensure our... more
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