On an expedition in the Awash Valley in Ethiopia, two anthropologists uncovered the bones of a 3.2 million-year-old human ...

If I asked you to imagine your dream snog, chances are it wouldn't be with a Neanderthal; burly and hirsute as they may be.

Learn more about the diseases Neanderthals endured and how their weakened immune system and encounters with humans made them ...

We used this definition to trawl published scientific papers, searching for observations of kissing in the group of monkeys ...