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Jan 8, 2020, 11:50 am259 ptsEcoWatch
By Diana Madson At the Detroit Zoo, giraffes, rhinos, and zebras not only fascinate visitors — they also generate what the zoo calls "poo power." "Animal manure is very usable. It has a lot of energy in it," says Manager of Sustainability Rachel Handbury. None In 2017, the zoo became the first in the country…
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