Dan Olmsted and Mark Blaxill discuss the long overlooked history of mercury poisoning and the debate over its link to autism. Then, our election series, The Big Picture, looks into why nearly no one is talking about climate change and the environment in the midterms. Also, photographer Gregory Crewdson on his portraits of abandoned film studios. Plus, New York Times columnist Gail Collins helps us answer the question, How Did Politics in America Get So Weird? And Paul David Pope discusses how his family created a media empire that includes the National Enquirer.
Note that the Leonard Lopate Show has a new call-in number: 646-829-3985.