KWONG: Oh. OK, so you found out in your research - by tracing the phylogenetic tree of kissing through primates, you found out that kissing was likely present in the ancestor of all apes who lived 21 ...

The evolutionary purpose of kissing has long eluded scientists. Smooching is risky, given things like pointy teeth, and inherently gross, given an estimated 80 million bacteria are transferred in a 10 ...

You've got to get in the mood for this next story. It's all about kissing. Smooching goes way back - 21 million years, in fact. That's according to new research carried out about the origins of ...

A kiss at an airport isn’t just a private moment that happened to be public—it’s a message. Even if no one says a word, the couple is ...

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. KUOW is Seattle’s NPR news station ...