Princeton African American Studies professor Imani Perry says the South can be seen as an "origin point" for the way the nation operates. Her book, South to America, reflects on the region's history and traces the steps of an enslaved ancestor. Ken Tucker reviews Neil Young's newest album, Barn. Buster Keaton was a silent film star in the 1920s, but he was far more than an actor and stuntman. He conceived and directed his films, cited by some of America's leading filmmakers as inspirations. We speak with Slate film critic Dana Stevens, whose new book, Camera Man, examines Keaton's work and influence, and chronicles his colorful life.