New research suggests the first kiss occurred 16.9-21.5 million years ago between ape ancestors in Africa. Scientists ...

Kissing is more than just "mouth-to-mouth" touching, and the study doesn't really shed much light on why humans kiss the way ...

Kissing stretches back roughly 21 million years, to the shared ancestor of humans and other large apes, according to the ...

A new study led by the University of Oxford has found evidence that kissing evolved in the common ancestor of humans and ...

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