Listen to the inaugural episode of Julie Chavez's new Zcast podcast, Ask a Librarian! Julie is an elementary-school librarian and her forthcoming memoir, The Anxiety Library, will be published by Zibby Books. In this episode, Julie talks with New York Times best-selling author Mac Barnett about how he got his start writing books for children, the limit of language in picture books, and what inspired him to write Extra Yarn, one of Julie's favorite books to read to kids.