The Science of Kissing by It’s Okay To Be Smart

Kissing is weird. We love doing it, but let’s face it: it’s weird.

The PBS Digital Studios series It’s Okay To Be Smart, hosted by Joe Hanson, explores the science of kissing, why we kiss, and why it feels good in general.

When you really think about it, kissing is an odd human behavior. You know, all the rubbing of our faces all over each other. So there must be a good reason why we do it, right? From motherly comforts to testing the genetic compatibility of your “mate” . . . the science of kissing is pretty awesome.