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

We used this definition to trawl published scientific papers, searching for observations of kissing in the group of monkeys ...

Despite how it may look in the final cut, on-screen kisses are rarely romantic. Add a huge film crew and multiple takes, and ...

Scientists found that kissing likely originated millions of years ago in great apes and was shared by early human relatives, including Neanderthals.

Rather than being a recent cultural development, kissing may have been practised by other early humans like Neanderthals and ...

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

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