"Foes of the proposed Keystone XL pipeline, which would carry oil from Canada to Texas, said on Thursday that an expected White House package of proposals to combat climate change was not an adequate trade-off for approval of the controversial project."

"As the Environmental Protection Agency seeks public comment on how to gauge the environmental impact of a proposed gold and copper mine in the Bristol Bay watershed, hundreds of thousands of Americans have weighed in on one side or another."

"Add Al Gore to the chorus of environmentalists who say it’s time for President Barack Obama to get serious about climate change."

"LIMÓN, Costa Rica -- Costa Rican environmentalist Jairo Mora Sandoval was murdered on May 30, while attempting to protect leatherback turtle nests on Moín Beach, on Costa Rica’s northern Caribbean coast. He was 26."

"Take a look at the notepad on your desk, your ATM receipt or the package of disposable plates you bought for your Memorial Day barbecue. Many paper products are labeled as being sourced from sustainable forests, and many consumers make buying decisions based on those labels. But are the labels trustworthy?"

"A radical shift in the world energy picture is raising environmental concerns in the United States."

Oil-and-chemical billionaire David Koch lobbies hard to influence U.S. politics and environment and energy policy. Did his money influence the kind of coverage presented on public television?

"Organizers say 'March against Monsanto' protests held in 52 nations and 436 cities. Anti-Monsanto rallies sparked by a Facebook page in February."

"SWARTHMORE, Pa. -- Student activists at more than 200 colleges are trying a new tactic in hopes of slowing the pace of climate change: They are asking their schools to stop investing in fossil fuel companies."

"A coalition of grassroots environmental groups—plus a few professors and celebrities—issued a public message to the Environmental Defense Fund on Wednesday: You don't speak for us on fracking."