"Like evolution, climate science has opened rifts in classrooms across the United States. Educators are lifting climate out of its narrow unit in middle school science – an effort, they hope, that will improve science literacy overall."

"It seems to have gone virtually unnoticed, but the world leaders at the weekend's G8 summit look as if they have taken the biggest step in years in tackling climate change. And it's quite apart from anything to do with carbon dioxide."

"Exposed to poisoned water at Camp Lejeune, these vets may hold the key to a scourge that kills some 40,000 American women -- and a few hundred men -- per year."

"It all started with Mike Partain, a.k.a. Number One. A barrel-chested father of four with a goatee and a predilection for aviator sunglasses, Partain was born at Camp Lejeune, the North Carolina base where his father, a first lieutenant in the US Marine Corps, was stationed in the late 1960s. Now he lives in Tallahassee, Florida, where he makes his living as an insurance claims adjuster.

"WASHINGTON — Gregory B. Jaczko, whose three-year tenure as chairman of the Nuclear Regulatory Commission has been marked by bitter battles with colleagues and with Congress, announced Monday that he would step down as soon as a successor was confirmed."

Maryland is set to ban the arsenic-containing drug Roxarsone in chicken feed. Maryland is a major chicken producer, and that puts it ahead of most other states as well as the federal government. It is all the more remarkable, given that 'Big Chicken' is a major force in Maryland politics.

"At his family farm on Maryland's Eastern Shore, Lee Richardson raises thousands of chickens from fuzzy hatchlings to the juicy broilers stacked at grocery stores far and wide. Like a lot of farmwork, this seems simple, but it's not.

"With "Golden Holocaust," historian Robert Proctor deconstructs an industry that still kills more than 400,000 Americans a year."

"Kathy Omachi was eating at McDonald's in Reedley [Calif.] recently, and she counted 51 gravel trucks pass by -- all in the time she finished a hamburger and fruit smoothie. The lifelong resident of this farming town, which is southeast of Fresno and within a few miles of three rock quarries, fears that even more trucks, with their dirty exhaust, will be on the road if nearby mining is expanded."

"Environmentalists battling Canadian oil companies over the proposed Keystone XL pipeline to the Gulf Coast and another link west to Asia are now girding for what they see as industry's Plan C: Move heavy crude to the East.

At issue is a plan announced this week by Enbridge Pipelines Inc. to reverse the flow of a pipeline that now carries 240,000 daily barrels of imported oil west from Canada's East Coast.

"Free-market thinktank's conference opens in Chicago with president admitting defections are hurting group's finances."

"HELENA, Mont. -- A wildlife advocacy group is suing the U.S. Forest Service to seek the release of documents about how the agency plans to keep a disease that already has killed millions of bats in the U.S. and Canada from spreading to the Northern Rocky Mountains."