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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 ...

BLOOMINGTON, Ind. -- 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 ...

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 ...

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 ...

Humans have been kissing for a long time, according to an article published in the journal Science on Thursday. Researchers studied cuneiform texts from ancient Mesopotamia in an effort to unlock the ...