"NAUCALPAN DE JUÁREZ, Mexico — The spent batteries Americans turn in for recycling are increasingly being sent to Mexico, where their lead is often extracted by crude methods that are illegal in the United States, exposing plant workers and local residents to dangerous levels of a toxic metal.

"CHEYENNE - The U.S. Environmental Protection Agency announced Thursday for the first time that fracking - a controversial method of improving the productivity of oil and gas wells - may be to blame for causing groundwater pollution."

"Air concentrations of the brominated chemicals doubled every 13 months in recent years in Cleveland and Chicago."

"America smashed the record for billion-dollar weather disasters this year with a deadly dozen – and counting."

"The Food and Drug Administration must come up with a decision by March 31 on whether to ban a chemical that’s widely used in plastics and the metal linings of food containers, according to a court settlement reached Wednesday between the agency and the Natural Re­sources Defense Council."

"At a hearing in Washington yesterday, lawmakers pressed product safety and health regulators about their three-year investigation into contaminated drywall, expressing frustration with their progress on all fronts."

"An exhaustive new report meant to address public fears about possible links between breast cancer and the environment finds evidence strong enough to make only a few firm recommendations, most already well known and none with a large proven benefit."

"For the first time, a US appellate court has ruled that the federal government must continue to protect an animal – in this case, Yellowstone grizzly bears – in part because of consequences of global warming."

"Montana's rivers are pristine and iconic, but they are also at the center of a property rights dispute that wound up before the Supreme Court on Wednesday. Gwen Ifill discusses the details of the dispute with Marcia Coyle of The National Law Journal."

"An unusual confluence of environmental, political and economic events are colliding to take down the coal-fired power plant, shifting American power generation from the country’s historically dominant fuel source."