When did the first ever kiss take place?

A study has suggested that kissing actually began more than 21 million years ago, after researchers tracked its origins to a ...

Why do we kiss? New research finds the answer goes back 21 million years

Kissing could be 21 million years old. NPR's Ayesha Rascoe speaks to Matilda Brindle an evolutionary biologist from Oxford University about the origins of smooching.

21-million-year-old smooch: The very first kiss occurred before humans, study says

The study, which was published on Wednesday in the Journal of the Human Behavior and Evolution Society, found that the very ...

Scientists Reveal the Origin of Kissing

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

First kiss was 20 million years ago by early primates, scientists say

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

When was the first kiss? Over 17 million years ago, a study suggests.

Evolutionary biologists don’t know why we kiss — but new research suggests kissing evolved long before humans existed.

Kissing is an ‘evolutionary conundrum.’ Scientists just mapped its unexpected origins

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 ...