"When the Deepwater Horizon rig exploded and oil started gushing into the Gulf of Mexico, neither the oil companies nor their watchdogs in the Interior Department were ready."

"The oil industry, not the federal agency that regulates it, plays a crucial role in writing the safety and environmental rules for offshore drilling, a role that critics say reflects cozy ties between an industry and its regulators that need to be snapped."

"It's the latest twist in American college ratings: How green is your campus? Dormitories at Chico State hold competitions to see which one can save the most energy, with the winning students awarded a pizza party."

A team of scientists at the National Oceanic and Atmospheric administration tries to sort out the various causes of hurricanes and heat waves -- to see whether the fingerprints of man-made climate change can be found.

"A cancer report that concludes Americans are under constant assault from carcinogenic agents has heartened activists, who hope that finally government and policymakers will pay attention to their concerns. But the report from the President's Cancer Panel on Thursday has underwhelmed most mainstream cancer experts and drawn only a puzzled response from the White House."

"A commission run jointly by Texas and Vermont, with a membership made up mostly of Gov. Rick Perry's appointees, could decide this summer to make Texas the potential resting place for radioactive waste from 36 states."

Russia's Lake Baikal, the oldest and deepest freshwater lake in the world, has been the focus of environmental protection efforts. Now the reopening of a dirty Soviet-era paper mill is restarting old battles.

"Ontario’s high-profile electronic waste disposal program is failing to recycle millions of computers and televisions it promised to keep out of landfill."

"Icelike crystals encrusting a 100-ton steel-and-concrete box meant to contain oil gushing from a broken well deep in the Gulf of Mexico forced crews Saturday to back off the long-shot plan, while more than 100 miles away, blobs of tar washed up at an Alabama beach full of swimmers."

"Academics from across the country are rallying against a subpoena issued by Virginia Attorney General Ken Cuccinelli II seeking documents related to the work of a former University of Virginia climate scientist, even as the university says it is preparing to comply with Cuccinelli's request."