John Donvan is a contributing correspondent to ABC News, where, in a three decade long career, his postings have included Chief White House Correspondent, Chief Moscow Correspondent, Amman Bureau Chief, Jerusalem Correspondent, London Correspondent, Eastern Europe Correspondent, and, most recently, a regular correspondent for Nightline. He is also host/moderator of the Intelligence Squared U.S. Debates. Caren Zucker is a 25-year veteran of ABC News and producer, best known for her work on World News Tonight and Nightline, and as co-writer of the PBS series Autism Now. John and Caren’s new book is In a Different Key: The Story of Autism. They are in the Northwest to speak at Town Hall Seattle tomorrow night, presented by Town Hall, University Book Store, and UW Autism Center, as part of the Science series.