Compost piles are prepped for screening at the Tulare Lake Compost plant. Researchers say that natural fertilizers created from sewage sludge are an increasing source of wind-blown microplastics.

FAIRBANKS, Alaska -- Environmental consultant Michael Pollen remembers standing on a pile of sewage sludge composting outside the Fairbanks treatment plant on a November day in 1997. The temperature ...

Bags of the earthy muck are labeled organic or natural. Sometimes it is billed as exceptional quality compost. Industry held a nationwide contest years ago and decided to call it biosolids, a ...

Austin has a sludge problem. Several years after a buildup of compost led to persistent fires, costing at least $3 million and taking more than a month to extinguish, city officials are keen to hire a ...

Casella Waste Systems is closing its Hawk Ridge Compost Facility in Unity Township after Maine regulators discovered high levels of forever chemicals on the site and indications that the contamination ...