Why reproduce in digital form something that's worked perfectly fine for hundreds of years as an analog device? That's the question I had for Yamaha about their new AvantGrand piano. The answer: So you can save five feet, 1,100 pounds, and $80,000.
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.