"Regional air quality regulators in California voted on Saturday to require the utility responsible for a ruptured underground pipeline in the Los Angeles area to underwrite an independent study on the health effects of a huge methane leak from the site."

"FLINT, Mich. — Standing at a microphone in September holding up a baby bottle, Dr. Mona Hanna-Attisha, a local pediatrician, said she was deeply worried about the water. The number of Flint children with elevated levels of lead in their blood had risen alarmingly since the city changed its water supply the previous year, her analysis showed."

"The head of the Midwest region of the U.S. Environmental Protection Agency offered her resignation over the water contamination crisis in Flint, Michigan, the agency said on Thursday, as it issued an emergency order to resolve the growing problem."

"Michigan Gov. Rick Snyder (R) on Wednesday released a trove of emails related to the Flint water crisis, something Snyder promised during his State of the State address."

"Travel warnings about the Zika virus, especially for pregnant women, are very much in the news now, but the germ was discovered more than a half century ago, and you may have already visited places where it flourishes."

"A week after the federal government released its latest recommendations for healthful eating, the 2015-20 Dietary Guidelines have touched off a food fight."

"Paraguay could face problems this year with dengue and other fevers transmitted by mosquitoes, which have proliferated due to rainy weather during the Southern Hemisphere summer, a health ministry official said on Tuesday."

"Gov. Rick Snyder of Michigan issued a sweeping apology on Tuesday to the residents of Flint for a contaminated water supply. He pledged to promptly release his emails about the issue, and laid out more specifics than had previously been known about the state’s handling of the matter."