**Nano generators

Forget about plugging your iPod or BlackBerry into a power source ever again, for now you can charge these devices just by waving your hand, or stretching your arm, and even by taking a walk. Scientists at Georgia have now come up with a new technology, called "nanogenerator”, which converts mechanical energy from body movements or even the flow of blood in the body into electric energy. And this electric energy can be used to power a broad range of electronic devices without using batteries. A major advantage of the new technology is that many nanogenerators can produce electricity continuously and simultaneously.