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

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

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

It’s still not clear why kissing evolved. From a utilitarian viewpoint, it doesn’t provide any immediate reproductive or ...

The movie, which marks his English-language debut, stars Anya Taylor-Joy as a crazed zealot who plans to sacrifice three ...

Kissing is an ancient trait retained over the course of evolution amongst the large apes, reveal scientists at the University ...

“Spit play exists on a broad spectrum,” says Brame. On one end are the open-mouthed make-outs many people already enjoy. “Slobbery, drooly kissing is one of the most common ways people engage in spit ...