Kissing is not a universal expression of romantic love, it turns out. Kissing is considered a sign of sexual attraction in less than half of the world's societies, according to a recent study. The ...

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

Some papers suggest romantic kissing began about 3,500 years ago. But a new review in the journal Science shows it was mentioned in much older clay tablets, from an area that's now modern-day Iraq.

JOJO Siwa and Chris Hughes have been pictured kissing in a swimming pool on a romantic holiday - confirming their relationship. Our exclusive picture shows the pair locking lips while straddling a ...

For generations, passionate kisses immortalized in movies, songs and the arts have served as a thermometer of romantic affection. But current research has found that not only is romantic kissing not ...

A kiss between lovers is such a common sight these days that one might think that it's always been done, and all over the world. But a new study finds that many cultures don't feature romantic kissing ...

Kissing is not a universal expression of romantic love, it turns out. Kissing is considered a sign of sexual attraction in less than half of the world's societies, according to a recent study. The ...