"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."

"This summer, some yellow-fever mosquitoes carrying the Zika virus are expected to arrive along the Gulf Coast and elsewhere in the continental United States. Health officials are urging people to use insect repellents with DEET to avoid being bitten. The mounting evidence that the virus is strongly linked with birth defects makes this a priority for pregnant women. But is it safe to use repellents containing DEET with a baby on the way?"

"As Southern California continues to battle the nation’s worst smog, most members of a powerful regional panel that enforces air pollution regulations can breathe relatively easily. Nine of the 13 members of the South Coast Air Quality Management District live close to the ocean in Los Angeles or Orange counties, where ozone, the hallmark pollutant of summer smog, exceeds federal health standards fewer than 10 days a year."

"Lead paint is making New York City’s children sick — and some landlords see it as the cost of doing business."

"After several years of study, the U.S. Food and Drug Administration today advised parents to stop feeding their infants so much rice cereal, warning that the latest research now suggests that arsenic concentrations in the grain can interfere with cognitive development."

"Ohio's environmental regulators are proposing an overhaul of how the state and its cities deal with lead in drinking water, including speeding up notifications when lead is found at the tap."

"It was a controversial move when Madison, Wis., decided to replace all its lead pipes in 2001. But that decision put the city ahead of the curve — allowing it to avoid the lead water contamination that is plaguing cities like Flint, Mich., now."

"U.S. health regulators are facing a lawsuit from a coalition of environmental organizations seeking to overturn the government's landmark approval of a type of genetically engineered salmon to be farmed for human consumption."