Health & Fitness
Over and over again, people tend to misperceive their true expertise on a given subject. Some people think they are smarter than they really are, and vice versa. Even the smartest people on the planet aren't immune to this common bias, as Bill explains. Carl dishes the dirt on dust in the latest installment of the Boredom Bin. And, speaking of dirt, Alison has good news for future Mars pioneers: french fries could be on the menu. And Nate takes us on a trip with some of his favorite psychedelic research studies.