"Everywhere you turn, it seems, there's news about the human microbiome. And, more specifically, about the bacteria that live in your gut and help keep you healthy. Those bacteria, it turns out, are hiding a big secret: their own microbiome. A study published Monday suggests some viruses in your gut could be beneficial."

If a kid catches a big walleye on the St. Louis River estuary in Duluth, the state warns her not to eat it. Ever.

"The Food and Drug Administration on Friday took steps to safeguard the nation’s blood supply from the Zika virus, calling for all blood banks to screen donations for the infection even in states where the virus is not circulating."

"Study finds a cocktail of legal and illegal drugs in Baltimore's Gwynns Falls, most likely from city's leaking sewers".

"ST. LOUIS -- Water samples from 16 schools in the city school system contained lead levels that exceeded those most commonly found in homes in Flint, Mich., after a contamination crisis there, according to results released Thursday by an environmental engineering company."

"Across the U.S. people are trying to reduce inequities in how environment affects physical well-being".

"Air pollution in Singapore rose to the "unhealthy" level on Friday as acrid smoke drifted over the island from fires on Indonesia's Sumatra island, the city-state's National Environment Agency (NEA) said, in a repeat of an annual crisis."

"Neighborhoods on the [Buffalo's] East and Lower West Sides are 'ground zero' for the worst lead poisoning problems in all of Upstate New York. Lead paint is considered the culprit, but the crisis in Flint, Michigan, has raised questions about the safety of the drinking water in cities like Buffalo."

"EAST CHICAGO — About once a week for much of 2015, Kamia Edwards’ son was too sick to go to school."

"One of the top U.S. public health officials on Sunday warned that the mosquito-borne Zika virus could extend its reach across the U.S. Gulf Coast after officials last week confirmed it as active in the popular tourist destination of Miami Beach."