Humans spend a lot more time kissing than they do thinking about why they kiss. But scientists intrigued by this question say ...

Scientists have found evidence suggesting that kissing dates back up to 21 million years and that our ape ancestors and ...

A kiss is one of the most universal gestures in the world. It’s a wordless way to show affection that transcends language, ...

Read an excerpt from the new book, 'Born Human,' about Chuck Schuldiner, who played in the bands Death, Control Denied, Mantas, and Voodoocult.

It is not a recent cultural development. A new study in Evolution and Human Behavior suggests kissing may date back 21 ...

Scientists suggest that the act of kissing evolved over 21 million years ago, a practice shared by humans and their great ape ...

Kissing is something of a mystery, being "only documented in 46 percent of human cultures," noted psychologist Catherine ...