"Residents of Flint, Mich., may tell you lead is a serious menace, but for most of the last 5,000 years, people saw lead as a miracle metal at the forefront of technology."

"A chemical used to make plastic IV tubes and catheters has been linked to attention deficit disorder in children who received treatment for a serious illness, according to a new study."

"Waste leaching from frack disposal wells are the likely source of a spike in endocrine-disrupting compounds in downstream waterway—a troubling sign given the roughly 36,000 disposal sites across the U.S."

"The White House on Wednesday issued a dire warning to Republicans in Congress: Spend money to prevent the Zika virus from spreading within the United States or regret it later."

"AES Corp. settled a lawsuit accusing the power-generating company of allowing one of its units to dump coal ash on beaches in the Dominican Republic, which allegedly caused a spate of birth defects in children."

"More than 1,000 women are suing the company for covering up a cancer risk."

"Industry groups are challenging President Obama’s rule to protect workers from exposure to harmful silica dust."

"With public officials across the nation under fire for downplaying the health risks posed by lead water pipes, Mayor Rahm Emanuel's administration is moving to start testing tap water in the homes of children poisoned by the brain-damaging metal."

"Climate change poses a serious danger to public health – worse than polio in some respects – and will strike especially hard at pregnant women, children, low-income people and communities of color, an authoritative US government report warned on Monday."

"To boost its supply of organic foods, Costco is trying something new: It’s working with farmers to help them buy land and equipment as it struggles to keep pace with customer demand."