"Canada's offshore petroleum boards are not equipped to cope with a major spill, the country's environmental watchdog warned on Tuesday in a report that also said the booming energy sector needed more oversight."

"Greenhouse gas emissions from U.S. power plants fell 4.6 percent in 2011 as more generators were switched to cleaner-burning natural gas and renewable sources from coal, according to new data from the Environmental Protection Agency."

"A breaking investigation by EnergyWire appears to connect the dots between shadowy lobbying efforts by shale gas fracking company Range Resources, and the Obama EPA's decision to shut down its high-profile lawsuit against Range for allegedly contaminating groundwater in Weatherford, TX."

"A federal judge has ruled strongly in favor of a major energy firm that [San Diego] sued for roughly $250 million over its pollution cleanup efforts beneath 166-acre Qualcomm Stadium site."

"Esther Tauscher stood outside her Staten Island home, leafing through boxes of family photos that had been steeped in storm water. She paused to point out life events -- her honeymoon, holding her baby boy in a hospital bed."

"OSLO -- Plans by Arctic nations to start cooperating over oil spills are vague and fail to define corporate liability for any accidents in an icy region opening up to oil and gas exploration due to global warming, environmentalists said on Monday."

"WASHINGTON -- Critics want a halt to offshore Arctic drilling in the wake of Shell's latest mishap in the waters off Alaska but there's no sign the Obama administration and key members of Congress are backing off their support for drilling in the sensitive region."

"The EPA found serious flaws in two earlier environmental reviews. Soon it will have another opportunity to weigh in, with climate impacts a major concern."

"One of the biggest unknowns in the unfolding Keystone XL debate is the role the U.S. Environmental Protection Agency might play."

"The Justice Department on Wednesday asked a federal judge in New Orleans to require BP to produce documents that outline how it low-balled the amount of oil flowing into the Gulf of Mexico from its Macondo well in 2010. The estimates were sent to the Coast Guard and Congress."