The Good News on NAFTA and Looking Back on Chernobyl:  Lori Wallach, Director of Public Citizen’s Global Trade Watch (and www.replaceNAFTA.org) will discuss the surprising potential for a much better deal on trade as the NAFTA agreement is renegotiated. In the show’s second segment, Professor Serhii Plokhy, Harvard historian and author of Chernobyl: the History of a Nuclear Catastrophe— in conversation with Alison Rose Levy.