"In a bid to clean up one of the nation’s dirtiest coal-fired power plants without causing economic harm to the Navajo Nation that surrounds it, the Environmental Protection Agency indicated on Friday that it would give the plant’s owners five extra years, until 2023, to install expensive state-of-the art emissions reduction equipment."

"The lighting industry has finally come up with an energy-efficient replacement for the standard incandescent bulb that people actually seem to like: the LED bulb."

"The Atlantic Canyons off the Northeastern U.S. plunge as deep as 15,000 feet and harbor diverse and fragile marine ecosystems. Now, the Obama administration’s plans to consider offshore oil and gas exploration in the canyons is troubling conservationists."

"Phil Anschutz -- who has made money out of everything from a well explosion to a failing railroad -- is looking to wager $9 billion on the fierce winds of Wyoming."

"HOUSTON -- Royal Dutch Shell’s Arctic drilling program is now officially in jeopardy and its prospects will depend on the findings of two continuing federal inquiries. One review is on the grounding of the Kulluk drill ship on New Year’s Eve after it was set adrift for five days in stormy weather, and the other is on the safety management of the entire Shell program."

"Opponents of the Keystone XL pipeline and the heavy Canadian crude oil that it would carry released two reports on Thursday asserting that the environmental impacts of the project are worse than previously estimated, and urged the Obama administration to veto it."

"There are few new EVs, but plenty of performance cars -- with eco mode. Yes, it's possible to drive a rip-roaring V-8 Corvette and get nearly 30 mpg."

"CHEYENNE, Wyo. -- Gov. Matt Mead has joined those expressing disappointment that the U.S. Environmental Protection Agency has extended for a third time a public comment period on a report on groundwater pollution in a Wyoming gas field rather than moving toward wrapping up the study."

"WEATHERFORD, Texas -- When a man in a Fort Worth suburb reported his family's drinking water had begun "bubbling" like champagne, the federal government sounded an alarm: An oil company may have tainted their wells while drilling for natural gas. At first, the Environmental Protection Agency believed the situation was so serious that it issued a rare emergency order in late 2010 that said at least two homeowners were in immediate danger from a well saturated with flammable methane. More than a year later, the agency rescinded its mandate and refused to explain why."

"Leaked documents reveal the government has sought to change proposals that could prevent deepsea drilling operations."

"CHESTER, W.Va. -- The ground here is leaking. Several neighbors have moved away to escape seeps coming out of the hillside. They say the leaks have dampened their backyards and infested their homes with mold. ..."

"Shell may have moved an oil rig that ran aground off Alaska last week partly to avoid millions of dollars in taxes, U.S. Rep. Ed Markey said, raising even more questions about the oil company's decision on the timing of the move."

"Some Baltimore Gas and Electric Co. customers — Del. Glen Glass of Harford County included — are convinced that they don't want a smart meter wirelessly sending data about their energy usage day in and out."

"The operator of three coal-fired power plants in Maryland has agreed to pay a total of $2.2 million in penalties and fix long-standing pollution problems at the landfills in Southern Maryland and Montgomery County where it disposes of the ash from those plants, according to court documents."

"Pennsylvania is considering new air pollution limits for diesel- and natural gas-powered engines used in Marcellus Shale development that are stricter than those that exist now but, according to eight environmental groups, not nearly as tough as they could and should be."