"Attorneys representing three households in northeast Fresno have filed a potential class-action lawsuit against the city and others over discoloration and lead in water coming from faucets in their homes."

"Antibiotic resistance has grown so dire that it will be the subject of a dedicated global summit later this month".

"Hand and body washing products containing triclosan, triclocarban and 17 other antibacterial chemicals can no longer be sold over the counter after the FDA determined they may be harmful and ineffective."

"The World Health Organization greatly broadened its recommendations about sexual transmission of Zika virus Tuesday, advising both men and women who have been in Zika-affected areas to practice safe sex for at least six months."

"Syrian government forces have been accused of dropping barrel bombs containing chlorine from helicopters on a suburb of Aleppo, injuring 80 people."

"The top Republican and Democratic Senate leaders returned from their seven-week summer recess Tuesday and picked up where they left off in July -- harshly blaming the other's party for inaction on critical bills to battle Zika and fund the government."

"Six months after President Raul Castro declared war on the Zika virus in Cuba, a militarized nationwide campaign of intensive mosquito spraying, monitoring and quarantine appears to be working."

"On Sunday morning, the South Carolina honey bees began to die in massive numbers."

"When the results of tests for lead in the water at more than 1,500 New York City school buildings were announced in July, officials said that fewer than 1 percent of all the samples taken showed lead concentrations that exceeded Environmental Protection Agency guidelines. Given other safety measures in place, officials assured parents, the water was safe to drink. But a review of how the testing was conducted suggests that the amount of lead in the water that students consume could be greater than the results indicate."

"Federal scientists are finding increasing skin and liver tumors in bottom-feeding fish caught in several of Wisconsin's Lake Michigan tributaries that flow through areas with particularly severe environmental problems."