Recharging using air waves...

This is really cool, use the wasted air waves energy to recharge your cell phone!

clipped from tech.yahoo.com Prototype Nokia phone recharges without wires Tue Jun 16, 2009 1:06PM EDT Holy Grails of technology: Wireless power. Nokia, however, has taken another baby step in that direction with the invention of a cell phone that recharges itself using a unique system: It harvests ambient radio waves from the air, and turns that energy into usable power. Enough, at least, to keep a cell phone from running out of juice. Mind you, harvesting ambient electromagnetic energy is never going to offer enough electricity to power your whole house or office, but it just might be enough to keep a cell phone alive and kicking. Currently Nokia is able to harvest all of 5 milliwatts from the air; the goal is to increase that to 20 milliwatts in the short term and 50 milliwatts down the line.