"MIAMI -- Dozens of personnel from the Environmental Protection Agency worked to secure some of the nation's most contaminated toxic waste sites as Hurricane Irma bore down on Florida. The agency said its employees evacuated personnel, secured equipment and safeguarded hazardous materials in anticipation of storm surges and heavy rains."

"Houston’s sprawling network of petrochemical plants and refineries released millions of pounds of pollutants in the days after Hurricane Harvey began barreling toward Texas."

"GALENA PARK, Texas —  Cindy Sanchez began to feel ill while barbecuing just before Harvey's torrents started pelting this city just east of Houston, along a corridor with the nation's highest concentration of petrochemical plants."

"A group of first responders exposed to smoke from a Crosby, Tex., chemical plant fire after Hurricane Harvey are suing the owner of the plant for more than $1 million, saying that they vomited and gasped for air in the middle of the road in a scene the suit describes as 'nothing less than chaos.'"

"In America, the world’s richest country, hookworm, a parasitic disease found in areas of extreme poverty, is rampant, the first study of its kind in modern times shows."

"If it’s sudsy, it probably contains dioxane, a likely carcinogen."

"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."