"A federal appeals court [Tuesday] rejected a series of challenges from states, environmental groups and energy companies to U.S. EPA's determinations of which parts of the country meet its standard for ozone, a main component of smog."

"Duncan Tarr was arrested during a protest against an oil pipeline in Michigan. The company used crime victim restitution laws to charge Tarr for the work that couldn't be done during the disruption."

"State and federal courts handed down three decisions against a proposed copper and gold mine in Alaska that environmentalists are staging a nationwide fight against."

"Maryland's fracking moratorium survived its last possible political challenge today."

"ANN ARBOR, Mich. — Inside the National Vehicle and Fuel Emissions Laboratory here, a mammoth contraption, with steel rollers, advanced electronics and exhaust tubes, is nearing completion."

"The Obama administration, aiming to keep a finicky, chickenlike bird called the greater sage grouse off the endangered species list, moved on Thursday to limit petroleum drilling and other activities on some of its wide-ranging habitat in the American West."

"When Texas regulators bypassed the EPA to ease air pollution regulations on 19 coal plants, they violated the federal Clean Air Act, a new petition says".

"President Obama on Wednesday announced a sweeping new clean water regulation meant to restore the federal government’s authority to limit pollution in the nation’s rivers, lakes, streams and wetlands."

"A federal court has rejected Kansas’ challenge of the Environmental Protection Agency’s (EPA) disapproval of an air pollution plan from the state."

"A new analysis from the federal government's energy statisticians finds the Obama administration's plan to reduce the power sector's heat-trapping carbon emissions would raise electricity prices 4.9 percent above their current trajectory by 2020."