We try to understand why the US public is so divided over global warming causes and issues? Inside Story Americas, Shihab Rattansi discusses with guests: Michael Mann, the director of Penn State University's Earth System Science Center and author of 'The Hockey Stick and the Climate Wars'; Dana Nuccitelli, an environmental scientist who writes for the Skeptical Science blog. He was involved in the survey of scientific literature on climate science that was published this week. And Rick Piltz, the director and founder of Climate Science Watch.
