This aerial photo shows a 2016 spill of coal ash and other pollutants flowing into North Carolina's Broad River from Duke Energy's Cliffside coal-fired power plant after heavy rain overwhelmed stormwater retention structures. North Carolina recently ordered the company to excavate the ash at Cliffside and five other power plants in the state and move it into lined landfills. Duke Energy is fighting the order; if it loses, it wants customers and not shareholders to pay for the cleanup. (Photo by the Catawba Riverkeeper via the Waterkeeper Alliance’s Flickr account.)