Lip kissing is an act that’s so natural and common in many present-day societies it is easily taken for granted. But it’s not actually clear whether people have always been kissing, or whether its ...

Is it in his kiss? Oh, yes. Osculation, the scientific term for kissing, in many ways says everything about your compatibility with your mate and the health of your relationship. We asked scientist ...

Kissing a romantic partner on the lips is a natural and common part of our modern-day society, but much remains to be learned about its origins. Humanity’s first-ever recorded instance of romantic ...