Sony’s PlayStation 3 is a gaming giant -- figuratively and literally. Figuratively, its graphics are amazing and it has been praised as the best Blu-ray player you can buy. Literally, the 80GB system weighs more than 11 pounds and sucks five times as much energy as a fridge when running, according to a 2008 study. The just-announced PS3 Slim kicks those beastly qualities to the curb.
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.