Kissing stretches back roughly 21 million years, to the shared ancestor of humans and other large apes, according to the ...

"A comparative approach to the evolution of kissing," was published by Evolution and Human Behavior on Nov. 19 ...

Kissing is something of a mystery, being "only documented in 46 percent of human cultures," noted psychologist Catherine ...

Scientists have traced kissing back to early primates, suggesting it began long before humans evolved. Their analysis points ...

Researchers found that the very first kiss, the simple act of pressing two sets of lips together, likely happened about 21.5 to 16.9 million years ago.

Smooching might be a familiar behavior, but it's more mysterious than you would probably imagine. While kissing might feel ...

A recent study suggests kissing originated approximately 21 million years ago, predating modern humans and possibly emerging ...

Using artificial intelligence technology and mathematical modeling, a research group led by Nagoya University has revealed that human behavior, such as lockdowns and isolation measures, affect the ...

From popular culture to the dark corners of the internet, there are many claims about “fundamental” differences between people on the basis of gender, racial or ethnic groups, sexuality, or other ...