Every step you take depends on a structure most people rarely think about. The pelvis sits at the center of the body and ...

For a long time, most scientists believed that early human hunter-gatherer societies were mostly equal, with little hierarchy ...

A new study comparing 59 species of primates linked same-sex sexual behavior to scarce resources and more predators in socially complex species. The findings show diverse sexual behaviors are common — ...

Hank brings you the facts, as they are understood by scientists today, about the evolution of humans from our humble primate ...

Experts at Imperial College London suggest homosexuality might help forge strong bonds that allow groups to stay together to survive harsh conditions.

The fact that primates other than humans engage in homosexual behavior is well-documented. A recent study in Nature Ecology & ...

Scientists once thought that planning required a primate brain. Experiments with birds are now proving that assumption wrong.

Larger penis size influences female attraction and male rival threat perception, highlighting how sexual and competitive pressures together shaped human sexual evolution.

With their round eyes, plush fur and tiny hands, pygmy slow lorises look like they were designed to be cradled. Yet this baby ...

Human virus patterns have been spotted in the highlands of Ethiopia within a community of wild monkeys. Now, ASU is studying these patterns.

The new evolutionary study found two main reasons for the primate anomaly: to attract mates and to threaten rivals.