The Ancient Sexual Revolution that May Have Spurred Human Monogamy

“Not many people realize that the most important sexual revolution for our species probably happened several million years ago,” Gavrilets says. “This revolution was accomplished by the masses of lower-ranked males, along with females, directly against the elite of alphas, so the term revolution is even more appropriate.”

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http://healthland.time.com/2012/05/29/the-ancient-sexual-revolution-that-may-have-spurred-human-monogamy/