"Kids Eat French Fries, An average of about 30 pounds a year," says high school science teacher Janice Crowley. "So I decided we'd study what they eat." Good decision: The science of french fries has brought Crowley and her students at Wichita Collegiate School in Kansas a $10,000 grant and publication in a scientific journal. Better yet, it has taught them the big thrill of scientific discovery.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.