Nobel Prize-winning physicist Frank Wilczek and Scientific American editor George Musser talk about the Large Hadron Collider, the most powerful particle accelerator ever built, which went online this week. Plus, we'll test your knowledge about some recent science in the news. Web sites mentioned in this episode include www.frankwilczek.com; www.youtube.com/watch?v=j50ZssEojtM; http://www.sciam.com/report.cfm?id=lhc-countdown