"Canada dropped its longtime opposition on Friday to the international listing of asbestos as a hazardous material, a designation intended to curb the use abroad of the fire-resistant substance, which can cause cancer and other illnesses."

"Valley fever starts with the simple act of breathing."

"People of color eat a lot of locally-caught fish for economic and cultural reasons. And yet they are the least likely to be warned because state efforts fail to reach minority and low-income populations."

"The Portland City Council voted 5-0 during a raucous public meeting Wednesday morning to add fluoride to Portland's drinking water, ending the city's status as the only major U.S. city that hasn't approved fluoridation."

"The GAO says the Department of Homeland Security has not established the need or effectiveness of a multibillion-dollar upgrade to the BioWatch system."

Eleven years after the 9/11 terrorism attack, Department of Homeland Security officials explained to a House Energy subcommittee why their program to harden security at U.S. chemical plants still hasn't been implemented.

"A U.S. farmer group on Tuesday dropped its opposition to efforts by Dow AgroSciences to roll out a new biotech crop system in exchange for some concessions by Dow, including help investigating any accidental crop damage."

"The current poster child for global warming is a polar bear, sitting on a melting iceberg. Some health officials argue the symbol should, instead, be a child."

"PORTLAND, Ore. -- Who bears responsibility for an impoverished child with a mouth full of rotting teeth? Parents? Soda companies? The ingrained inequities of capitalism? Pick your villain, or champion. They are all on display here as the largest city in the nation with no commitment to fluoridating its water supply -- and one of the most politically liberal cultures anywhere -- has waded into a new debate about whether to change its ways and its water."

"Two more cases of hantavirus infection have been linked to Yosemite National Park, one fatal and the other believed to have originated in the park's high country, marking the first time the outbreak has been traced beyond the Curry Village campground."

"This year's outbreak of West Nile virus is the worst since the illness was first observed in the United States in 1999, officials from the U.S. Centers for Disease Control and Prevention said Wednesday."

"The numbers released quietly by the federal government this year were alarming. A ferocious germ resistant to many types of antibiotics had increased tenfold on chicken breasts, the most commonly eaten meat on the nation’s dinner tables. But instead of a learning from a broad national inquiry into a troubling trend, scientists said they were stymied by a lack of the most basic element of research: solid data."

"Does an organic strawberry contain more vitamin C than a conventional one?"

Cases of the hantavirus disease that recently killed four in California occur regularly in many parts of the U.S.

"Residents in almost all parts of the United States live on lands that contain minor to substantial concentrations of radionuclides of one type or another.1 These substances often make their way into tap water, leading to exposures by ingestion, inhalation, or dermal pathways during showering or other contact with the water.