Kissing, for all popularity, is a bit of a mystery. Scientists have long debated when humans’ ancestors first put their lips together, and whether the act is simply a cultural trait. A new study ...

A kiss may be on your list as one of the best things in life. But have you ever thought about how kissing evolved in the first place into such a meaningful activity for humans? After all, even though ...

A kiss is one of the most universal gestures in the world. It’s a wordless way to show affection that transcends language, culture, and even species boundaries, conveying a great deal of meaning ...