This Friday, May 5, 2017 photo, shows the The Great Lakes Water Authority NEFCO Biosolids Dryer Facility in Detroit. The $143 million facility that converts human waste into fertilizer has exceeded its permitted emission levels of toxins, adding harmful pollutants to an area that already has the dirtiest air in metro Detroit, according to data reviewed by the Detroit Free Press. (Ryan Garza/Detroit Free Press via AP)
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