I was browsing around the cyber world when I came across this invention on science mag website that claims how you can generate a usable amount of electricity from your walking.
Scientist in the United States and Canada said they have developed a unique device that can be strapped on the knee that exploits the mechanics of human walking to generate a usable supply of electricity.
If you are a runner who enjoys listening to your Ipod while running and you are worried that your Ipod Battery might get low, Worry no more! the geeks behind this gadget say a minute of walking can power a cell phone battery for 10 minutes.
For more information how this device works and how it might change how we run visit: http://sciencenow.sciencemag.org/cgi/content/full/2008/207/1