"U.S. EPA appears to be leaning toward giving states an extra two years -- until 2022 -- to start cutting carbon emissions from power plants under a final Clean Power Plan rule expected to be rolled out as early as Monday."

"The U.S. Senate Energy Committee on Thursday narrowly passed a bill to lift a 40-year-old ban on the export of crude oil, but the measure faces an uphill battle in getting passed by the full Senate."

"Just before 6 p.m. Thursday night, Shell Oil's controversial icebreaker MSV Fennica weaved through nine remaining protesters hanging from the St. Johns Bridge and made its way toward the Pacific Ocean."

"MORGANTOWN, W.Va. -- On a muddy hill above a World War II ordnance plant that made material for atomic bombs, a fracking crew will drill thousands of feet underground in a search for life itself. The drilling is a hunt for microscopic organisms, first introduced hundreds of millions of years ago, which have evolved to live in the shale 7,000 feet below the ground, at pressures 600 times that of the surface, and temperatures around 160 degrees F."

"For the first time, the U.S. Department of Defense has detailed what it views as its greatest challenges related to climate change. In a report to Congress, the Defense Department said that global warming poses a 'present security threat, not strictly a long-term risk.'"

"Barack Obama will use all of his powers – including his veto – to defend his plan to fight climate change, the White House said, on the eve of new rules cutting carbon pollution from power plants."

"It's late summer, and Americans are flocking to the country's national parks for some recreation and fresh air."

"Over two years after a runaway freight train derailed, exploded and destroyed much of the small town of Lac-Megantic, Quebec, killing 47, the Obama administration has issued new rules governing breaking procedures for tanker cars carrying volatile cargo."

"WASHINGTON -- A new government rule that promises to do more to protect streams near coal mining operations entered a critical stage this week, with coal industry lobbyists and environmentalists already lining up for battle."

"Protestors rappelled off a bridge and formed a kayak flotilla in Portland, Oregon, on Wednesday hoping to delay Royal Dutch Shell's Arctic oil exploration this summer by blocking the return of a ship to Alaska that holds emergency equipment."