The penultimate day of the Valentine's Week is celebrated as Kiss Day. While the celebration is comparatively new, the act is ancient and significant.

The Kiss Day which falls on February 13 serves as an international celebration for couples who wish to demonstrate ...

Scientists say imagination—not technique—drives a good kiss, with fantasies shaping arousal and intimacy in modern love.

Is there anything that feels quite as satisfying as that moment when those TV characters you love finally (finally!) kiss? One of the great joys of watching TV is getting invested in the love lives of ...

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