A new study released on Wednesday found that humanity's first kiss occurred roughly 21 million years ago, predating humans.

Saudi Arabia Crown Prince Mohammed bin Salman was in Washington this week discussing billions of dollars in weapons deals ...

By Toby Sterling AMSTERDAM (Reuters) -Kissing did not begin with star-crossed human lovers but with the primate ancestors of ...

Scientists found that kissing likely originated millions of years ago in great apes and was shared by early human relatives, ...

The first kiss in history probably took place over 16.9 million years ago — long before humans even existed, a new study suggests.

A new study that examines how kissing evolved suggests that ape ancestors and early humans like Neanderthals probably locked lips with their friends and sexual partners. The behavior may date back 21 ...

About 110 million years ago, two pterosaurs were probably wandering around the shore when they were snapped up by a hungry ...

Researchers trace the origins of the first kiss to early primates 20 million years ago, revealing the deep roots of human ...

Over 500 million years ago, the Cambrian Period sparked an explosion of skeletal creativity. Salterella, a peculiar fossil, ...

The brain does not need its sophisticated cortex to interpret the visual world. A new study published in PLOS Biology demonstrates that a much older structure, the superior colliculus, contains the ...

Researchers wanted to examine when kissing began, given that from an evolutionary standpoint it has no obvious survival benefit, and could spread disease ...