Why do we kiss under mistletoe?

The sight of mistletoe may either send you scurrying or, if you have your eye on someone, awaiting an opportunity beneath its snow-white berries. But how did the festive tradition of kissing under mistletoe come about? Carlos Reif explains how this long-lived custom intertwines the mythology and biology of this intriguing plant. [Directed by Bálint Gelley, narrated by Addison Anderson, music by Gergely Buttinger].