The Black Hawk helicopter has served the U.S. Army well. But it’s been around since 1979. Time for a revamp, with advanced electronics, more-powerful engines, and various other tweaks. The UH-60M Upgrade, as it’s officially known, made its first flight last summer, and the Connecticut aircraft-manufacturer Sikorsky will start delivering them to the Army next year and ramp up to full production by 2013.
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.