Anyone following the news out of America’s Af/Pak engagement knows that drones are being used increasingly – some say alarmingly so – to ferret out and eliminate militants along the Afghanistan-Pakistan border. But if drones can track militants hiding in the Pakistani hills, why can’t they track a celebrity in Hollywood Hills? A celebrity-photo agency is developing a camera-equipped paparazzi drone that could soon be tracking and terrorizing celebrities in public and at their homes.
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.