How to Tell Science from Bunk

Climate change skeptics, anti-vaccine activists and other scientific doubters have all made headlines recently. But why do people believe what they do in spite of scientific evidence to the contrary? We’ll spend this hour with City University of New York philosopher and blogger Massimo Pigliucci. His new book is “Nonsense on Stilts: How to Tell Science from Bunk” (Chicago, paperback, 2010).