Listen to David discussing Sum -- and actor Jeffrey Tambor reading stories from the book -- on WNYC's Radiolab.
Wednesday is Indigo Blue: Discovering the Brain of Synesthesia has been awarded the Montaigne Medal, Eric Hoffer Award for Books.

David's iPad app "Why the Net Matters, or Six Ways to Avert the Collapse of Civilization" was recently called a "superbook" by the New York Times Magazine. For a taste of the argument, read David's article in WIRED or watch a video of his talk at the Long Now Foundation. Don't have an iPad? The manuscript is now available as an eBook.
SUM was chosen as the best book of 2009 by Chicago Tribune's Pulitzer-winning literary critic Julia Keller.