Oklahoma Tornado; R. David Paulison; Peter Baker; Audra McDonald

Andrew Revkin of The New York Times and Bryan Walsh of Time Magazine explain how tornadoes develop and how possible it is to predict them. R. David Paulison, former director of FEMA, discusses the disaster response in the aftermath of the Oklahoma tornado that devastated Moore. Journalist Peter Baker compares President Obama's response to the Oklahoma tornado to the way previous presidents have dealt with disasters. Tony Award-winning actress and singer Audra McDonald talks about her career and her new album, "Go Back Home."