"MEXICO CITY — Two years after the worst offshore oil spill in U.S. history, Mexico's state oil company is about to test its hand at drilling at extraordinary depths in the Gulf of Mexico."

"The federal government has taken a step toward wide distribution of gasoline with 15 percent ethanol by allowing the biofuel’s manufacturers to register as suppliers."

"WASHINGTON -- The leaders of the United States, Mexico, and Canada [Monday] pledged to develop 'continental energy, including electricity generation and interconnection' across national borders and welcomed 'increasing North American energy trade.'"

"After careful analysis of oil prices and months of negotiations, President Obama on Friday determined that there was sufficient oil in world markets to allow countries to significantly reduce their Iranian imports, clearing the way for Washington to impose severe new sanctions intended to slash Iran’s oil revenue and press Tehran to abandon its nuclear ambitions."

"A last minute entreaty by President Obama wasn’t enough to convince senators to strip the oil and gas industry of billions in tax incentives."

"ANCHORAGE, Alaska -- Federal offshore drilling regulators on Wednesday approved Shell Oil's spill response plan for exploratory drilling in the Beaufort Sea, drawing strong criticism from environmental groups that claim oil companies cannot clean up oil in ice-choked waters."

"The Department of the Interior [Friday] released voluntary guidelines aimed at helping wind energy project developers avoid and minimize impacts of land-based wind projects on wildlife, particularly birds."

"The Obama administration’s proposed rule to control greenhouse gas emissions from new power plants -- the first ever -- could go far toward closing out the era of old-fashioned coal-burning power generation."

"Environmentalists have mounted a legal challenge against Wyoming regulators they say are improperly approving oil and gas companies’ 'overly broad,' boilerplate requests to shield information about the chemicals they use in drilling operations."