I had a VW 1600 engine that needed to be torn down. And I had a camera. Now, you have a photo gallery of the innards of that engine, which makes for an easy walk-through of the parts make your car go.
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.