"When the Oregon state inspector got close enough to the hulking black rail car with the red placard warning about flammable liquids inside, he heard hissing."

"Colorado regulators approved groundbreaking controls on emissions from oil and natural gas operations after an unusual coalition of energy companies and environmentalists agreed on measures to counter worsening smog."

"Dozens of freight trains roll through downtown Parkville each day, their blaring horns annoying to anyone with ears. But the chief of the Southern Platte Fire Protection District, Richard Carrizzo, has far more chilling concerns these days."

"The last thing Felipe Saiz saw from behind his trademark mirrored sunglasses was the vast sun-bleached vista of the Permian Basin where he'd grown up, with its scrub trees and white caliche rock."

"WILLIAMSTON — Water is seeping through a coal ash dam in the foothills of South Carolina, raising concerns about the structure’s stability and whether a failure would contaminate the Saluda River."

"How much is an old coal power plant worth? With natural gas production booming and environmental rules looming, in Illinois the answer is clear: It can be hard to even give one away."

"The Obama administration is moving forward with another fuel efficiency rule that would cost automakers more than $14 million each year, according to government estimates."

"If an oil train explosion on the scale of last year's deadly crash in Quebec roiled a U.S. town, would railroads have enough emergency personnel and equipment ready to respond? In most cases, transportation regulators don't know."

"Less than three years after signing legislation opening up Ohio state parks and forests to fracking, Gov. John Kasich now opposes the controversial horizontal drilling for oil and gas on public lands."

"Tesla Motors Inc., posting fourth-quarter results that beat analyst estimates, is gearing up for further growth with plans to raise Model S sedan production 56 percent this year and to build a massive battery plant."