Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. “The meeting of ...

Kissing feels instinctive and intimate, yet scientists now argue it is a surprisingly recent and uneven addition to human behavior. Instead of a single romantic origin story, the evidence points to a ...

In the Western world, Valentine’s Day expressions of affection are closely linked to mouth-to-mouth kisses. I remember feeling envious years ago when a colleague found a card in his pigeon-hole ...

The first kiss in recorded history dates back nearly 5,000 years! The earliest recorded instance of kissing dates back to ancient Mesopotamia around 2500 BCE. Clay tablets from this era describe two ...

Doctor Who made history Saturday evening, with the Time Lord having his first ever explicitly romantic same-sex kiss on screen. The episode, set in the British Regency period of 1813, saw Ncuti Gatwa ...

Your first kiss can give you quite the fluttery feeling in your stomach. Well, make sure to keep the kisses coming if you want to live a healthy and fulfilled life. Yes, while kissing is a great way ...