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

Editor’s Note: Sheril Kirshenbaum is the author of “The Science of Kissing” and a research scientist at The University of Texas at Austin. She spoke last year at the TED Global conference in Edinburgh ...

Our lips say a lot, from words to kisses, whether the embraces of new lovers, friends greeting one another, or parents saying goodnight to kids. No matter what kind of kiss, passionate or tender, they ...

There are the ones who pucker tightly before the kiss. There are the nibblers who chew around the edge of your lips. Then there are the ones who use lots of saliva, and others who are very dry. There ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. “The meeting of ...

Kissing ignites a powerful biological response, releasing hormones like oxytocin and dopamine that foster connection and pleasure. Beyond romance, it reduces stress by lowering cortisol and can even ...

A kiss on the lips doesn't always mean romantic love. Some kisses can be confusing, entangle emotions, or happen without a formal relationship. When someone kisses you on the lips without being in a ...