Ask Smithsonian: Why Do We Kiss?

Is a kiss really just a kiss? In this one-minute video, our Ask Smithsonian Host, Eric Schulze, explains why we pucker up. (1:11)

Learn more about why we kiss here.

Have a question in mind? It's your turn to Ask Smithsonian.

(Still Image: Wavebreak Media LTD/Wavebreak Media Ltd./Corbis)