"The United States expects Islamic State to use crude chemical weapons as it tries to repel an Iraqi-led offensive on the city of Mosul, U.S. officials say, although adding that the group's technical ability to develop such weapons is highly limited."

"Researchers estimate the United States economy takes a $340 billion hit annually as endocrine-disrupting compounds lower IQs, increase behavior problems and exacerbate health woes like obesity and diabetes."

"At least two people died and six were severely injured on Monday in an explosion and fire at chemicals maker BASF's biggest production site in Germany, the company said."

"Negotiators from more than 170 countries on Saturday reached a legally binding accord to counter climate change by cutting the worldwide use of a powerful planet-warming chemical used in air-conditioners and refrigerators."

"Trenton Public Schools have found elevated levels of lead in more than three-quarters of its buildings."

"Home is both refuge and prison for citizens of Canada’s Chemical Valley."

World environmental leaders gather in Kigali, Rwanda, October 10-14 in an effort to finalize an agreement on limiting hydrofluorocarbons (HFCs), gases used as refrigerants that also boost greenhouse warming.

"California will tighten rules on how much farmers can use a common pesticide listed by the nation's most productive agricultural state as a chemical known to cause cancer, regulators said Thursday."

"Polychlorinated biphenyls, or PCBs, are industrial chemicals so toxic that Congress banned them 40 years ago. Research has shown that they can cause a range of health concerns, including cancer and neurological problems such as decreased IQ. And yet, because they were commonly used in building materials for decades, they continue to contaminate classrooms in between 13,000 and 26,000 schools nationwide, according to Harvard researchers."

"For Nayesa Walker, the clock started ticking just over a month ago. On Sept. 1, she was given 60 days to find a new home after East Chicago Mayor Anthony Copeland abruptly announced that the public housing complex where she and her three children live would be demolished. The land is contaminated with lead and arsenic."