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

One time, one of my friends made a snide comment to him about the way he treated me. I immediately defended him and told her ...

A new study released on Wednesday found that humanity's first kiss occurred roughly 21 million years ago, predating humans.

New research suggests that kissing probably predates humanity and evolved between 16.9 million and 21.5 million years ago, after the ancestor of the great apes split from the lesser apes, or gibbons.

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