Mac Barnett is a New York Times bestselling author of over 60 children's books, including Sam and Dave Dig a Hole, Extra Yarn, How Does Santa Go Down the Chimney? and the Shapes series, all illustrated by Jon Klassen; Just Because illustrated by Isabelle Arsenault; A Polar Bear in the Snow illustrated by Shawn Harris; John's Turn illustrated by Kate Berube, as well as the Mac B., Kid Spy series and The First Cat in Space graphic novels. His books have been translated into over 30 languages and sold more than 5 million copies worldwide. Mac's books have won many prizes, including two Caldecott Honors, three New York Times/New York Public Library Best Illustrated Awards, three E.B. White Read Aloud Awards, the Boston Globe-Horn Book Award, and several international prizes. He is the co-creator, with Jon Klassen, of Shape Island, a stop-motion animated series on Apple TV+, based on their best-selling Shapes series of picture books. Mac lives in Oakland, California. His website is macbarnett.com and his Instagram handle is @macbarnett.