By Alasdair Wilkins/io9
Posted 10.19.2010 at 12:15 pm 14 Comments
LEDs are, on small scales, the cheapest, most reliable, and most technologically powerful light sources out there. But their true potential is finally being unleashed. A new generation of LEDs can go anywhere - even into your body.
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.