Harnessing sunlight on the cheap

For a project that could be on the very cutting edge of renewable energy, this one is actually decidedly low tech--and that's the point.

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<p><a href="http://www.physorg.com/news129389932.html">Harnessing sunlight on the cheap</a></p> <p>For a project that could be on the very cutting edge of renewable energy, this one is actually decidedly low tech--and that's the point.</p>