Clau­dia Kalb is an award-win­ning jour­nal­ist who blends biog­ra­phy, sci­ence, and first­hand report­ing to illu­mi­nate the lives of great minds. Spark builds on a series of cov­er sto­ries she wrote for Nation­al Geo­graph­ic about the ori­gins of genius. Her first book, Andy Warhol Was a Hoard­er: Inside the Minds of His­to­ry’s Great Per­son­al­i­ties, was a New York Times bestseller.