SUM has been turned into an opera at the Royal Opera House in London (Composer: Max Richter, Director: Wayne McGregor). The London Evening Standard hails the opera as "immersive, meditative and sweetly fascinating". Read about the background of the collaboration in Wired.
SUM is Book of the Year: Chicago Tribune
SUM was chosen as the best book of 2009 by Chicago Tribune's Pulitzer-winning literary critic Julia Keller.
Sum on Radiolab
Listen to David discussing Sum -- and actor Jeffrey Tambor reading stories from the book -- on WNYC's Radiolab.