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

The riskiest behavior in humans peaks in adolescence. Researchers from the University of Michigan and James Madison ...

Chimpanzees show physical risk taking peaks in infancy, not adolescence, highlighting the powerful role of supervision in ...

The work suggests it may be because human parents and caregivers are able to keep a closer eye on human babies, while chimp mothers can curtail their children’s behavior for only as long as they can ...

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

Biologists tend to look at the animal kingdom and try to categorize things in an organized fashion. But nature has a way of ...