"Legislation to create national standards for regulating chemicals has generated opposition from some states, who fear the bill would curtail their authority to take action against chemicals they deem harmful."

"House Democrats on the Energy and Commerce Committee are warning that the GOP's second attempt to reform the nation's chemical laws could jeopardize state and local regulations on hydraulic fracturing."

"Women exposed to high levels of bisphenol A early in their pregnancy had an 83 percent greater risk of miscarriage than women with the lowest levels, according to new research."

A major supplier to the oil and gas industry says it will begin disclosing 100 percent of the chemicals used in hydraulic fracturing fluid, with no exemptions for trade secrets. The move by Baker Hughes of Houston is a shift for a major firm; it's unclear if others will follow suit."

"Hundreds of West Virginia residents who sought emergency-room care in January were treated for symptoms that were 'consistent' with exposure to MCHM, the primary chemical that leaked from the Freedom Industries tank farm into the region’s Elk River drinking-water supply, according to a review made public Wednesday."

"WEST, Texas -- Although the cause of the deadly blast at West Fertilizer Co. remains a mystery, a federal agency on Tuesday said the tragedy was preventable, citing shortcomings in existing regulations and standards at all levels of government."

"The Supreme Court on Monday declined to review a ruling against Exxon Mobil Corp that ordered the company to pay $105 million in damages for polluting New York City's groundwater with a toxic gasoline additive."

"A year after the West Fertilizer explosion, the nation is taking its first steps to repair the failed system for preventing chemical accidents. But whether the fixes will work, or even become reality, remains to be seen. Sen. Barbara Boxer, who chairs the Senate environment and public works committee, noted the disaster’s first anniversary with a call for action."