“The Department of Defense has quietly delayed its cleanup of harmful ‘forever chemicals’ at nearly 140 military installations across the country,” the New York Times reports.

“The Pentagon has been one of the most intensive users of these chemicals, which are also known as PFAS and are a key ingredient in firefighting foam. For decades, crews at U.S. military bases would train to battle flames by lighting jet-fuel fires, then putting them out with large amounts of foam, which would leach into the soil and groundwater.”