The increase in complexity from simple replicating molecules to complex animal societies has involved approximately eight major evolutionary transitions 6,7. Almost all of these transitions have ...

Promiscuity mixes up the gene pool and dilutes genetic differences between populations, slowing down the evolution of new species, says new research by an international team led by the University of ...

NEW YORK (CBS 2)-- A new study suggests there may be a biological reason for infidelity. A group of New York researchers say it's all in the genes -- and not your blue ones. When it comes to monogamy, ...

In the late ‘60s and early ‘70s, when “sleeping with someone was almost like shaking hands,” womanizers had a certain allure, according to Norris Church Mailer in her charming new memoir A Ticket to ...

Females are coy and males are ardent. This was Darwin’s somewhat Victorian portrayal of the sexes in his book The Descent of Man and Selection in Relation to Sex. The myth that males are naturally ...

"Slutty" behavior is good for the species. That's the conclusion of a new wave of research on the evolutionary drives behind sexuality and parenting. Women everywhere have been selflessly engaging in ...