A dot-commer's dream and the bane of bus-riders everywhere, Bluetooth hit the market with a bang in 2000. Today, while the general principle remains largely the same, technology and design continue to evolve. The Aliph Jawbone, a winner this year, records the surrounding ambient noise when its wearer isn't talking and then removes it when conversation begins, leaving your audience with only the crystal-clear sound of your voice.
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.