"Illinois is poised to become the latest state to crack down on power plants' coal ash waste, a hazardous byproduct of coal burning and source of groundwater contamination."

"When the Trump administration exempted parts of the Chicago area last year from federal limits on lung-damaging smog, it delivered a huge financial break to steel mills, chemical plants and other industries that are some of the region’s biggest polluters."

"The head of the Army Corps of Engineers has sent Congress a $778 million plan to fortify an Illinois waterway with noisemakers, electric cables and other devices in the hope that they will prevent Asian carp from reaching the Great Lakes, where the aggressive invaders could leave other fish with too little to eat."

"Newly released emails show that Environmental Protection Agency scientists raised strong objections to a 2018 decision by Scott Pruitt, who was head of the agency at the time, to exempt most of southeastern Wisconsin from federal limits on smog."

"The director of Illinois' environmental agency abruptly reversed positions last year on a key air quality compliance recommendation after being contacted by Clint Woods, the deputy head of EPA's air office, according to public records cited in federal court litigation."

"A second version of legislation in Ohio designed to subsidize the operation of two nuclear power plants appears to have the same limitations on renewable energy development as the first version."

"Moose are thriving at Isle Royale National Park, but the trees on which they feast are paying a heavy price, scientists reported Tuesday."

"A leak in a container holding hazardous chemicals created a massive chemical spill early Thursday and sent 37 people to the hospital, including seven in critical condition, said authorities in Beach Park, Illinois."

"Minnesota House members revealed Wednesday whether they believe humans are causing climate change. It broke largely along party lines: 79 lawmakers, including all 75 Democrats, voted yes, and 50 Republicans voted no. Five Republicans did not vote."