"It may cost up to $2 billion to clean up toxic firefighting chemicals that have leaked from more than 400 U.S. military installations, including Fairchild Air Force Base, a group of Democratic senators said Tuesday in a letter to the Senate Appropriations Committee."

"Vaccine giant Sanofi Pasteur has quietly pulled the plug on its Zika vaccine project, a move that underscores how difficult it may be at this stage to develop a vaccine against the virus."

"Gov. Roy Cooper’s administration is suing a manufacturer accused of dumping pollutants into the river that serves as the main source of drinking water for hundreds of thousands of North Carolinians."

"When his investigators dug into corruption allegations at a Superfund site, Oklahoma State Auditor Gary Jones believed they'd found criminal wrongdoing. But Scott Pruitt, then Oklahoma's attorney general, didn't agree with Jones about activities at the Tar Creek site. In 2015, a little more than a year after getting Jones' report, he said he wouldn't bring criminal charges."

"The city of Houston, the Environmental Protection Agency and an environmental advocacy group are investigating a potentially hazardous plume of a carcinogenic substance in one neighborhood after a nearby oil refiner reported its operations suffered hurricane-related damage."

"The tug of war over how much more fuel efficient new cars and trucks should be in coming years — a fight that once seemed all but settled — will play out again on Wednesday in a downtown Washington hotel."

"The Environmental Protection Agency has taken the unusual step of putting a political operative in charge of vetting the hundreds of millions of dollars in grants the EPA distributes annually, assigning final funding decisions to a former Trump campaign aide with little environmental policy experience."

"Oil refineries and chemical plants across the Texas Gulf Coast released more than 1 million pounds of dangerous air pollutants in the week after Harvey struck, according to public regulatory filings aggregated by the Center for Biological Diversity."

"A federal investigative agency that President Trump sought to eliminate is now looking into a fire and explosions at a facility northeast of Houston that is owned by a well-connected French chemical company."

"WASHINGTON, D.C. – When Ceon Dubose Palmore got thirsty at school, an administrator had to escort the 15-year-old past trash-bag-covered fountains to a faucet two floors down."