Add Yahoo as a preferred source to see more of our stories on Google. Japanese macaques at Joshin-etsu National Park in Japan. (Peter Adams / Getty Images file) (Peter Adams) Humans are far from the ...

Why the Latest Science Leads Us to a New Theory of Human Nature, by Jonathan Leaf (Bombardier, 320 pp., $21) Ever since Darwin, biologists have believed that much could be learned about human nature ...

What seems like a simple human gesture may actually carry roots far deeper in our evolutionary past. A new study has uncovered evidence that kissing evolved in the common ancestor of humans and other ...

Humans aren’t the only creatures engaging in same-sex sexual activities. To date, scientists have documented around 1,500 species, including whales, birds and fish, engaging in such behavior. Now, an ...

AMSTERDAM — Kissing did not begin with star-crossed human lovers but with the primate ancestors of great apes around 20 million years ago, according to a study published on Wednesday. Researchers from ...

You’ve probably seen the heartbreaking photos and videos of Punch, a baby macaque at Ichikawa City Zoo, who was abandoned by his mother at birth and has since captured hearts across Japan and around ...

Adaptation and behavior in the primate fossil record / Callum F. Ross ... [et al.] -- Functional morphology and in vivo bone strain patterns in the craniofacial region of primates: beware of ...

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 ...