Many primate species have been observed engaging in same-sex sexual behavior. A new study suggests it likely developed evolutionarily to help reduce conflict and build bonds.
Humans are far from the only primates engaging in same-sex sexual activity.
A new study found instances in which 59 nonhuman primate species, including bonobos, chimpanzees and macaques, have taken part in same-sex behaviors.
Researchers observed rep... [5584 chars]