A couple years ago, artist Matthew Mazzotta's idea of turning dog waste (methane gas) into renewable energy caught the world's attention. Since then, his splendid public awareness campaign of turning dog poo into biogas has inspired others.
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CAMBRIDGE, Mass. — It stinks and it's a hazard to walkers everywhere, but it turns out dog poop has a bright side.
Dog poop is lighting a lante...
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