Pay dirt: Start-up draws electricity from the ground
 

*Source: News Blog (News.com) (http://www.news.com/8301-10784_3-9809164-7.html)*
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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.

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