Source: Treehugger

Recently it seems like there has been a rash of renewable energy ideas for charging our gadgets, especially our cell phones, but this latest technology is probably my favorite. A team of researchers at University of Texas Arlington have developed micro-windmills only one-tenth the size of a grain of rice that could one day be used to charge cell phones.

Hundreds of the 1.8 mm-wide devices could be embedded in a sleeve for a cell phone and then wind, whether by waving the phone in the air or by holding it up on a windy day, would generate electricity and charge the battery.

Read full article at Treehugger