It started in January, when a carbon monoxide leak at Covington Middle School forced the building to shut down for several weeks. But even after it reopened, reports of symptoms like headaches, nausea, and fatigue persisted. Now a new report from the Environmental Integrity Project has named Covington’s paper mill among the nation’s top polluters in its industry.

A Roanoke County farmer is sounding the alarm after she found dead fish near her home in Salem’s Bradshaw Creek.

Officials in Colorado and Montana have issued air quality alerts due to smoke from dozens of wildfires in Canada that has drifted south into the United States.