By Lawrence Ulrich
Posted 10.07.2010 at 2:44 pm 0 Comments
Carmakers have always struggled with the problem of inefficiency. Internal combustion engines quickly convert the chemical energy in fuel into the kinetic energy that moves cars forward, but even the engine in the Toyota Prius, among the most efficient ever built, uses only 37 percent of that chemical energy — the rest goes to creating unwanted heat and friction.
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.