Decomposing food scraps at Bennett Compost in Northeast Philadelphia. Millions of tons of food waste end up in landfills each year. But alternatives like composting, anaerobic digestion and even ...
TOKYO – Where does all the animal dung go, and how does the zoo deal with it? That question came to my mind recently when I visited a zoo in the city of Hamura, western Tokyo, to cover an event. To ...
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