"Illinois Attorney General Lisa Madigan sued current and past owners of Phillips 66's Wood River, Illinois, refinery on Tuesday, alleging the ground water in the nearby town of Roxana, Illinois, was contaminated by the plant."

"Hundreds of Baltimore-area families have volunteered for a government study to spray their suburban yards with pesticide, which researchers hope can protect them from Lyme disease but that environmentalists warn is unsafe."

"A dangerous chemical used in dry cleaning is being phased out in California, but state regulators say we may still have to live with a toxic legacy for years to come."

The incidence of autism seems to be increasing, and genetics does not account for all the cases. Researchers are asking whether environmental factors like toxic chemicals are partly to blame, but definitive answers have not yet been found.

"Environmental regulators in Kentucky have found high levels of lead contamination at a former foundry site in Newport that is located next to homes. In Portland, Ore., state officials said Thursday that they will start canvassing a neighborhood near a former lead factory site as they prepare to test yards there for contamination."

"The White House appears to be blocking Environmental Protection Agency efforts to tighten oversight of engineered nanoscale pesticides and other chemicals, according to environmental and safety advocates."

"COLUMBUS, Ohio -- Doctors given new access to the proprietary chemical recipes that oil and gas drillers use to crack into Ohio shale would be prohibited from sharing the information with the public under an energy proposal moving through the Ohio House."

"Black and Latino toddlers may have significantly higher levels of toxic flame retardants in their bodies than white children, according to a new study that challenges one of industry's chief arguments for expanding use of the chemicals."

"WASHINGTON -- Moms, a few dads and some children gathered at the Capitol on Tuesday to urge Congress to strengthen the federal government's powers to regulate harmful chemicals."