"WASHINGTON — In a broad review of scientific literature, the nation’s top doctor has concluded that cigarette smoking — long known to cause lung cancer and heart disease — also causes diabetes, colorectal and liver cancers, erectile dysfunction and ectopic pregnancy."

"The Centers for Disease Control and Prevention is urging pregnant women who live in the areas of West Virginia where a toxic chemical leaked into the water supply last week to drink bottled water, even in places where the no-use ban has been lifted. The move comes 'out of an abundance of caution,' the CDC and the state's Bureau of Public Health say."

U.S. pesticide law allows EPA to approve pesticides for use under "conditional registration" -- before scientists know whether they will harm human health or the environment. Critics say the loophole is overused and abused, allowing EPA to ignore health threats.

"Scientists have documented for the first time that several phthalates -- controversial chemicals used to make vinyl and fragrances -- are declining in people while several others are rising. The study, published today, is the first comprehensive, nationwide attempt to document trends in exposure to these widely used chemicals over the past decade."

"CHARLESTON, W.Va. -- About one-third of the West Virginia American Water customers affected by a do-not-use water advisory had been told they can use their tap water as of Tuesday evening, Gov. Earl Ray Tomblin said Tuesday night."

"A federal judge in Charlotte has delivered a startling victory for industries that are part of the country’s long-running asbestos-liability fight, cutting more than $1 billion from what a company owes to current and future victims."

"Consumers can now see whether their personal care products contain toxic chemicals, using an online database made available Friday by the California Department of Public Health."

Valley fever, a sometimes-serious fungal disease endemic to the Southwest, is spread by windborne soil dust. Climate change may make it worse.

"The omnibus spending bill unveiled by lawmakers Monday night blocks a number of key energy and climate regulations put forward by the Obama administration."

"Oil and gas companies that are using hydraulic fracturing -- or fracking -- off the Southern California coast must report chemicals discharged into the ocean under new requirements released Thursday by federal environmental regulators."