What Causes a Rainbow?
Rainbows are beautiful and colorful, but why do they happen? Emma will try to find out, and she'll go into VidCon and her crazy nail story.
By Emma Chamberlain and Ramble
Stupid Genius is the brainchild of YouTuber, Emma Chamberlain. In every episode she takes a puzzling question, like "Why do onions make us cry?," and is given three guesses to try to solve it. Will she be able to do it? Listen every Thursday starting April 11th to find out!