"California's largest and most expensive environmental cleanup has failed to properly remove lead pollution from some homes and neighborhoods near a notorious battery recycler in southeast Los Angeles County, leaving residents at continued risk, a Los Angeles Times investigation shows."

"The fossil fuel industry is failing to tackle methane emissions despite its pledges to uncover and fix leaking infrastructure, according to a report by the International Energy Agency (IEA) published on Tuesday."

"Drinking water systems are preparing for the possibility that the EPA will try to codify its 2022 health advisories suggesting no amount of PFAS substances are safe, water attorneys say."

"The Biden administration on Friday restored the legal foundation of an Obama-era regulation governing mercury, a pollutant from power plants that can damage brain development in babies and cause heart disease in adults."

"The Trump administration abandoned rail safety rules that were pursued during the Obama era. The Biden administration is trying to revive some of them."

"A group of 24 Republican-led states is suing the Environmental Protection Agency (EPA) to try to knock down a rule governing which waters get federal protections."

"A visit to East Palestine from the head of the E.P.A. and a White House pledge to lend more support were met with skepticism in the community."

"There is no timetable for reopening part of the main southern Arizona highway southeast of downtown Tucson, officials said Wednesday afternoon, a day after a deadly desert crash caused a hazardous material leak and forced evacuations nearby."

"Residents of the Ohio village upended by a freight train derailment packed a school gym to seek answers about whether they were safe from toxic chemicals that spilled or were burned off."

"On Feb. 3, a train derailed in the village of East Palestine, setting off evacuation orders, a toxic chemical scare and a federal investigation."