What Makes a 'Great American Novel?'

There are many contenders for the "Great American Novel" -- Moby Dick, The Great Gatsby, To Kill A Mockingbird, Beloved, etc. Last week, The Atlantic attempted to capture the scope of "Great American Novels" of the last 100 years. Senior editor Gal Beckerman joins us to discuss how the 136-book list came together and we take your calls.