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They prefer to call it wastewater, but the bottom line is that researchers at the University of Nevada are close to commercializing a process for generating renewable energy from sewage sludge. The energy could be used to run equipment at the plants, which is a big deal because sewage treatment plants are massive energy consumers
The largest airport in the country, with the “greenest” parking lot, is in a bit of environmental trouble: a DIA raw sewage spill may have sent a million gallons of disgusting into waterways that can feed into the Barr Lake fishery and bird sanctuary (enjoy that, bald eagles).
From the residue of mining to untreated sewage, the world is grappling with a host of environmental problems - here is a list of 10 of the worst
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