In the words of Dua Lipa, one kiss is all it took about 21 million years ago. That's roughly when scientists estimate that ...

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.

Kissing may feel like a very human habit, but new research suggests it has much deeper roots. A team of scientists says the behavior likely began more than 20 million years ago, long before modern ...