A new study posits that same-sex sexual behavior developed to help primates in complex social groups ease tension, reduce ...

A recent study has drawn controversy by implying genetic links between bisexuality in men and a propensity for risk-taking. This research on human sexual behavior, published in January in Science ...

Primates form same-sex sexual behavior alliances to gain rank and mating opportunities Male primates use same-sex bonds as ...

Lauren Leffer: The link between our genes and our selves is complicated. We know the DNA coded in our cells is part of what makes each of us who we are. Tulika Bose: But genes aren’t the whole story ...

How does ovulation affect a woman’s desire for sex? This is a controversial question, and it has stimulated debate for at least half a century. When I taught a course in human sexual behavior, way ...

Homosexual behaviour in primates has a deep evolutionary basis and is more likely to occur in species that live in harsh ...