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

"First kiss beliefs" include idealized beliefs that your first kiss with a new partner should be a magical, transformative moment, sparking intense emotions within. Idealized romantic expectations ...

New historical and evolutionary research places kissing in earlier manuscripts and models its possible roots in ancient ape ancestors.

Records of the very first romantic kiss date back at least 4,500 years ago, new evidence suggests, about 1,000 years earlier than scientists previously thought. In a new article published in Science, ...

Snogging. Smooching. Canoodling. While such kissing is often depicted as a universal behavior in sexual encounters and romantic relationships around the world, a growing body of anthropological and ...

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.

Experiencing your “first kiss” is a rite of passage that has been dramatized countless times in pop culture. But what about humanity’s first kiss? When and why did our species start to express love ...

Why do we make such a big deal out of kissing in romantic relationships? Why does a kiss seem so important for judging chemistry and attraction? Also, why is the exchange of kissing and affection so ...

Kissing is a mystery. Science doesn't entirely understand why people do it. Theories abound, but the puzzle remains largely unsolved. Only two other species kiss, chimpanzees and bonobos. But only the ...

Lip kissing is an act that’s so natural and common in many present-day societies it is easily taken for granted. But it’s not actually clear whether people have always been kissing, or whether its ...

Smooching occurs across species and in a variety of ways, but the romantic context may be exclusive to humans — and isn't consistent in all cultures. But since behavioral scientists can’t pinpoint the ...