"The Federal Railroad Administration said it is investigating the safety of transporting crude oil by rail, including whether chemicals used in hydraulic fracturing are corroding tank cars."

"The beepocalypse is on the cover of TIME, but it looks like managed honeybees will still pull through. Wild bees—and wild species in general—won't be so lucky in a human-dominated planet."

"In April, the U.S. Centers for Disease Control and Prevention raised to 535,000 its estimate of the number of American children with potentially dangerous levels of lead in their blood."

"NEW YORK -- All of the notices U.S. regulators received to vouch for the safety of common food additives between 1997 and 2012 were submitted by people who had a vested interest in the outcome of those assessments, according to a study published in JAMA Internal Medicine on Wednesday."

"The train that derailed in Lawtell [La.] is leaking chemicals and at least one of two cars carrying a hazardous chemical, vinyl chrloride, is damaged."

"Key assumptions about bisphenol A (BPA) exposure and bioavailability may be off base, according to a new report in EHP that questions the traditional interpretation of biomonitoring data underlying current risk assessments of the chemical. Laboratory research suggests that BPA, a widely used chemical for polycarbonate plastics and other products, is an endocrine disruptor with potential adverse health effects involving reproduction, metabolism, and cancer."

"WASHINGTON -- President Barack Obama on Thursday ordered federal agencies to review safety rules at chemical facilities in response to the deadly April explosion at a Texas fertilizer plant."

"WASHINGTON -- A proposed overhaul of how the country regulates toxic chemicals came under sharp attack [Wednesday] from officials of California and several other states."

"The Carson City (Calif.) Council declared a local emergency Monday night over contamination in the city’s Carousel tract, upping the pressure on Shell Oil to expedite cleanup of benzene, methane gas, and other hazardous chemicals on the site."

"WASHINGTON -- Sen. Barbara Boxer will seize control of efforts to regulate industrial chemicals during what lobbyists are calling a 'mega-hearing' Wednesday that will test her ability to navigate a major environmental law through a divided Congress."