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Biogas and anaerobic digestion made number one in HowStuffWorks' list of wacky alternative energy, and poop-to-energy biogas projects have proven popular on Discovery News too. From biogas in Haitian ...

Biogas digesters – a simple form of technology that turns waste into fuel – have been around for centuries. But only recently have intrepid urban homesteaders begun adding this nifty piece of ...