"CHEYENNE, Wyo. -- A land conservation group has reached a long-sought agreement to prevent a gas drilling project near a southern approach to Jackson Hole and Grand Teton National Park by buying out a vast area of mineral leases."

"A killer fungus has attacked ash trees across northern and central Europe, prompting pleas for the UK to ban sapling imports. But it may already be too late"

"The U.S. Environmental Protection Agency asked for a full-court review of a decision by a three- judge panel that threw out a rule designed to cut pollution from coal-fired power plants."

"The premiere of a Hollywood film featuring hydraulic fracturing is months away, but the energy industry already is preparing for battle."

"The actor Daryl Hannah was arrested in northeast Texas on Thursday, along with a landowner as the pair protested against an oil pipeline designed to bring crude from Canada to the Gulf Coast."

"Utility is hoping to bring Unit 2 back into service at 70% capacity for five months before taking it offline for further inspections."

"Already under pressure to curb noxious air pollution, the owner of four coal-fired power plants in Illinois is facing new legal complaints about toxic chemicals and heavy metals leaching from decades-old waste ponds."

"Fifteen residents of Corpus Christi, Texas -- so sickened by pollution they have been deemed crime victims -- are asking a federal judge to force Citgo Petroleum Corp. to set up multimillion-dollar trust funds to cover medical and relocation costs, in a case with national ramifications."

"OLYMPIA, Wash. -- The state Supreme Court unanimously ruled Thursday that the state's hazardous substances tax is constitutional."

"Massachusetts and California are the two most energy-efficient states, according to a report this week from a group that promotes new energy policies, technologies and investments."