A new study showing that traces of arsenic can be absorbed by humans from rice raises questions about whether the exposure presents a risk -- and, if so, how to minimize it.

"DENVER -- Colorado regulators decided Monday night to wait a week before they start deliberating a proposal to require oil and gas companies to publicly disclose what chemicals they use in hydraulic fracturing."

"The federal government's strict new rules on mercury emissions are a pro-life issue that Christians should embrace to protect unborn children, according to a group of Christian environmentalists."

"VIENNA, W.Va. -- A three-person team of scientists has found a 'probable link' between C8 and high blood pressure among pregnant women, but no such link between exposure to the chemical and other reproductive effects, the team announced Monday."

"Exposure to atrazine, a commonly used weed killer, increases the risk of reproductive problems in a wide range of animals, says a new review study that analyzed research from around the world."

"Worries about fires, explosions and chemical releases prompted the federal agency in charge of workplace safety on Wednesday to expand a special inspection program focusing on the nation's chemical plants. Regulators believe the industry is particularly vulnerable to such hazards, meriting the closer attention."

"Yet some plants will continue to be shielded from the special inspections, despite past worker deaths, because of their status as 'model workplaces.'

"Women who drink water contaminated with low levels of the weed-killer atrazine may be more likely to have irregular menstrual cycles and low estrogen levels, scientists concluded in a new study. The most widely used herbicide in the United States, atrazine is frequently detected in surface and ground water, particularly in agricultural areas of the Midwest. The newest research, which compared women in Illinois farm towns to women in Vermont, adds to the growing scientific evidence linking atrazine to altered hormones."