Mercedes-Benz says it will build a hydrogen-fueled version of its European B-Class hatchback. The F-Cell will get electric power from a hydrogen cell, giving it the performance of a 2-liter economy car. An inaugural run of 200 units will arrive in the US and Europe by early 2010.
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.