Environmentalists are going gaga for a street lamp in Cambridge, MA that is powered by dog poop. The lamp, a shining example of how humans can make use of an underutilized and perpetually renewable energy source -- feces -- is the brainchild of Matthew Mazzotta, a conceptual artist who studied at the nearby Massachusetts Institute of Technology (MIT) who wanted to give back to the community.
The lamp is located at a dog park and uses a device known as the methane digester. Folks whose dogs do their business there simply collect the poop in a plastic bag, put it in the device and turn a crank to help the methane in the tank rise up to the top so it can be piped to the gas-burning lamppost that is attached.
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