"Two years ago, we got a chance to assure parents and teachers, in any future epidemic, that the air in classrooms was safer, making it easier for children to attend school in person and avoid learning loss and isolation."

"The Edison Electric Institute, which represents investor-owned utilities, said in formal comments Tuesday that the Environmental Protection Agency's proposed limits on greenhouse gas emissions from coal and gas-fired power plants are too strict, and said power plant owners need more flexibility, including more time to install pollution controls."

"Scientists are wondering if global warming and El Nino have an accomplice in fueling this summer’s record-shattering heat."

"Maryland’s largest water utility filed a lawsuit against more than a dozen companies Friday, alleging that they knowingly polluted the water supply with “forever chemicals” and saying that they should bear the burden of upgrading systems to remove these toxic substances."

"A developer has big ideas to turn tires, plastic and electronic waste into energy at 30 locations, starting with a tire-to-gas plant next to the jail and student housing in the heart of what was once Ohio’s Steel Valley."

"Excessive pollution in Paris' Seine River forced organizers to cancel a pre-Olympics test swimming competition due to take place on Sunday, the sport's international federation said."

"For almost 20 years, U.S. public-health advocates have worried that toxic chemicals are getting into ground water and harming human health because of an exemption to the federal Safe Drinking Water Act that allows operators of oil and gas fracking operations to use chemicals that would be regulated if used for any other purpose."

"The closure of one of Pittsburgh’s largest coal-processing plants in 2016 led to a lasting reduction in hazardous air pollution and a decrease in heart-related hospital visits, according to a new study."