I thought this was a well written article, with some interesting highlights of a few projects<div><br><div><a href="http://www.popsci.com/technology/article/2011-06/kenyas-ingenious-biogas-system-might-be-model-america?page=4">http://www.popsci.com/technology/article/2011-06/kenyas-ingenious-biogas-system-might-be-model-america?page=4</a><br>
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