190. Time to Take Back the Toilet

What’s More Dangerous: Marijuana or Alcohol? (Rebroadcast)

What’s the “Best” Exercise? (Rebroadcast)

191. Why Doesn’t Everyone Get the Flu Vaccine?

193. Someone Else’s Acid Trip

194. How Safe Is Your Job?

195. How Efficient Is Energy Efficiency?

196. Is There a Better Way to Fight Terrorism?

198. The Maddest Men of All

199. This Idea Must Die