A new study explores how kissing evolved with the help of science, tracing it back to early grooming behaviors in ancient apes.

Stories centered around true love's kiss might be tales as old as time. And, according to a new study, kisses might even have been around before humans walked the earth. Humans kiss each other ...

Two different human species meet tens of thousands of years ago. Modern humans, fresh from Africa, encounter their stockier, cold-adapted cousins in what is now Europe. Did this initial meeting lead ...

Kissing, for all popularity, is a bit of a mystery. Scientists have long debated when humans’ ancestors first put their lips together, and whether the act is simply a cultural trait. A new study ...

Stories have long been swapped on awkward first kisses and princesses smooching frogs, but a new study suggests the earliest instance of two lips pressing together happened up to 21 million years ago ...

How far back in evolutionary history does kissing go? Through phylogenetic analysis, an international team of scientists found that kissing was likely present in the ancestor of all apes – which lived ...

Well, today is Valentine's Day, which means love and connection are on people's minds, and I recently met someone who studies one form of affection, kissing. Matilda Brindle is an evolutionary ...

The study defined kissing, in part, as “oral-oral contact with some movement of the lips/mouthparts and no food transfer” Brian Anthony Hernandez joined PEOPLE as a writer-editor in 2023. He was ...