Our ancient primate relatives—including Neanderthals—may have enjoyed a nice peck on the lips. But researchers still don’t ...

Kissing was a trait that originated in the ancestors of large apes 21.5 to 16.9 million years ago, long before Romeo and ...

Kissing is more than just “mouth-to-mouth” touching, and the study doesn’t really shed much light on why humans kiss the way they do, said Adriano Reis e Lameira, an evolutionary psychologist and ...

Want to send your faraway lover a kiss? A Chinese contraption with warm, moving silicon “lips” appears to have just the answer. The device, advertised as a way to let long-distance couples share “real ...