Are Unicorns Real?

Are unicorns real? Who made them up? Where do they come from? What do they eat, how big are they, and do they have rainbow manes? We're answering all of your questions about unicorns-and learning about other mythical creatures as well with Adam Gidwitz, creator of The Unicorn Rescue Society and Dana Simpson cartoonist and author of Phoebe and Her Unicorn.