*Source: News Blog (News.com) (
http://www.news.com/8301-10784_3-9809164-7.html)*
________
Here's a renewable energy source most of us haven't thought of: dirt.
Living Power Systems (
http://www.living-power.com/index.html), a company being spun out of Harvard University, has made a microbial fuel cell that is able to tease a trickle of electricity from garden-variety bacteria in the ground.
More...