"Environmental concerns are raised anew about potential contamination from Canadian open-pit mines flowing through the waterways into Montana’s lakes, harming fish."

"Chlorpyrifos is so harmful that America banned its use on food. But a top EPA official made it clear that the U.S. was not ready to support similar protections for the rest of the world under a treaty that restricts pollutants that travel the globe."

"EPA has found that a dangerous chemical prevalent in drinking water poses more risks than previously determined, including outsize cancer threats."

"Global carbon dioxide emissions were roughly flat through the first five months of the year, with rising greenhouse gas production from China and India offsetting deep declines in emissions from the United States and Europe."

"A solar storm is expected to make the Northern Lights visible in 17 U.S. states on Thursday, forecasters say."

"Defining conservation as a specific “use” of public lands is shaping up to be the primary point of legal opposition to a proposed federal lands rule that would prioritize conservation over fossil fuels extraction and allow public lands management to adapt to a changing climate."

"When Mississippi environmental regulators checked the emissions of a large wood pellet mill operating a few miles from the Louisiana line, they found pollution levels two times higher than the legal limit."

"A massive Houston-area chemical fire that burned for three days in 2019 could have been prevented if proper procedures were in place at the chemical storage facility run by the Intercontinental Terminals Co., according to an investigation released Thursday by the U.S. Chemical Safety and Hazard Investigation Board."

"Some of the largest manufacturers of heavy trucks and engines in the country have agreed to accept a California plan to ban sales of new diesel big rigs by 2036 under a deal aimed in part at thwarting potential litigation and maintaining a single national standard for truck pollution rules."