Did you know there are zombie bugs that not only eat other bugs but also inhabit and control their bodies? There's even a wasp that delivers a perfectly-placed sting in a cockroach's brain and then leads the roach around by its antennae -- like a dog on a leash. Scorpions glow in ultraviolet light. Lots of bugs dine on corpses. And if you want to know how much it hurts to get stung by a bullet ant (hint: it really, really hurts), you can consult the Schmidt Sting Pain Index. It ranks the pain produced by ants and other stinging creatures. How does it work? Dr. Schmidt, the...