Those guys who eat rotten food to win a million bucks on Fear Factor or Survivor? The Science Channel's new reality series Survivorman will put them all to shame. In each episode, Les Stroud--a nature enthusiast and filmmaker who once spent a year in a forest with naught but a stone ax and his survival skills--attempts to make it through a week in various harsh environments. He must do it all, including filming, by himself. Stroud's success demonstrates how useful it can be to know something about, for example, high-school biology: In one episode, he captures a turtle using a trap made from frog intestines. Tasty!