Kissing is more than just “mouth-to-mouth” touching, and the study doesn’t really shed much light on why humans kiss the way they do, said Adriano Reis e Lameira, an evolutionary psychologist and ...

AMSTERDAM — Kissing did not begin with star-crossed human lovers but with the primate ancestors of great apes around 20 ...

Neanderthals are usually seen as brutish and primitive, but research now suggests our ancestors kissed often - and even with ...

A similar disorganized attachment can occur in captive chimpanzees, particularly orphans who are raised by humans. A lack of a permanent caregiver can lead to this more fearful behavior. However, in ...

Denisovans, a mysterious human relative, left behind far more than a handful of fossils—they left genetic fingerprints in modern humans across the globe. Multiple interbreeding events with distinct ...

Researchers have found two important building blocks of human speech in wild chimpanzees, one of our closest relatives. A pair of studies finds that chimp communication includes both rhythmic ...

Grunts, barks, screams and pants ring through Taï National Park in Cȏte d’Ivoire. Chimpanzees there combine these different calls like linguistic Legos to relay complex meanings when communicating, ...

The frequently cited 99% similarity between human and chimp DNA overlooks key differences in the genomes. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...