Perhaps the only thing scarier than the living dead is finding out that they're already inside the house. Geneticists recently found that non-coding genes -- some of the many dotting the human genome -- can rise from the dead. When they do they can cause problems, including one of the most common forms of muscular dystrophy.
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.