"The government has no way of fully knowing which U.S. chemical facilities stock ammonium nitrate, the substance that exploded last year at a Texas fertilizer plant and killed 14 people, congressional investigators say. Outdated federal policies, poor information sharing with states and a raft of industry exemptions point to scant federal oversight, says a new report obtained by The Associated Press."

"When a mile-wide tornado roared through Joplin, Mo., it killed 158 people and injured thousands. And it also kicked up toxic remnants from the city’s industrial past that are still haunting its residents on the third anniversary of the disaster."

"People who disclose confidential information about hydraulic fracturing chemicals in North Carolina would be subject to criminal penalties and civil damages, under a bill in the state Legislature."

"Honeybees could be on their way back, according to a new federal report."

"Oil refineries would be required to cut emissions and begin monitoring levels of toxic air pollutants at their fence lines with neighboring communities under standards proposed Thursday by the U.S. Environmental Protection Agency."

"Flame retardants are ubiquitous at preschools and day care centers, potentially exposing children to chemicals that are hazardous to their health, UC Berkeley researchers wrote in a study published Thursday."

"The Veterans Affairs Department has long resisted disability claims from service members who said chemical residue left in Vietnam War-era planes that were used to spray defoliants over Southeast Asia caused them severe illnesses, including cancer. This summer, a panel of independent scientists will try to determine whether those veterans could have been exposed to the toxins in defoliants, including Agent Orange, at a level that would be dangerous to their health."

"A foreign oil company convicted of polluting a Texas community's air with dangerous chemicals has gotten off easy in a criminal case that could undercut the prosecution of environmental crimes in the United States. The case revolves around Venezuelan-owned Citgo Petroleum’s decade-long violation of the federal Clean Air Act at its refinery in Corpus Christi."

"Could pesticides - their use and abuse - increase levels of cancer and birth defects? It is a question asked across the vast belt of Argentina where GM crops are grown. In Chaco, the Minister of Public Health wants an independent commission to investigate a growing health crisis."

"Chemicals in water from deep underground in hydraulic fracturing wells have caused problems as they get to water treatment plants in other states. It’s a potential problem to consider as North Carolina moves closer to allowing fracking."