What Went Wrong?

On today’s show, we’ll talk to a Louisiana disaster specialist who warned of an impending catastrophe in New Orleans for a decade before Katrina. He’ll tell us about his current fight to protect the city against future storms. Plus: Mark Ruffalo and Zoe Wanamaker—the stars of Awake and Sing!, Clifford Odets’ 1935 masterpiece. And a conversation with one of the coal miners featured in the landmark 1973 documentary “Harlan County, USA.” And to start it all off, a new documentary about the 2004 Chechen terrorist attack and 3-day siege of a school in Beslan, Russia.