"A growing body of evidence found an array of flame-retardant chemicals – many which are carcinogenic – in test participants, a potential health concern for firefighters and others exposed to the chemicals."

"The scientific case has been building for how a smoggy summer afternoon in North Texas might harm a child playing outdoors, a person with asthma or, on the worst days, perhaps even a healthy adult."

"The proportion of American adults who smoke cigarettes has hit a new low, new federal data show. And among those who do smoke, fewer are lighting up every day, and even they are smoking fewer cigarettes."

"The American mining industry is asking a federal appeals court to overturn a ban on new uranium mining claims near the Grand Canyon in a legal battle with environmentalists over impacts on the premier U.S. park."

A well-working market that prices conservation as a source of electrical energy faces serious legal challenges from power producers.

"DES MOINES, Iowa — Christmas tree likely will cost a little more this year, and growers like John Tillman say it's about time."

"President Obama could leave office with the most aggressive, far-reaching environmental legacy of any occupant of the White House. Yet it is very possible that not a single major environmental law will have passed during his two terms in Washington."

"A ProPublica analysis of federal government data adds new details to what’s known about the routes taken by trains carrying crude oil. Local governments are often unaware of the potential dangers they face."

"The U.S. Supreme Court on Tuesday agreed to weigh a challenge by industry groups and some states to an Obama administration regulation intended to limit emissions of mercury and other hazardous pollutants mainly from coal-fired power plants."

"The Obama administration is expected to release on Wednesday a contentious and long-delayed environmental regulation to curb emissions of ozone, a smog-causing pollutant linked to asthma, heart disease and premature death."