"The Obama administration on Tuesday finalized new fuel-economy standards for large trucks, buses and other heavy-duty vehicles, the latest in a series of efforts aimed at slashing greenhouse gas emissions and weaning the nation from its dependence on fossil fuels."

"Twelve Democratic attorneys general want a House chairman to end his investigation into state probes of Exxon Mobil Corp."

"The U.S. Chemical Safety Board is joining the investigation into the Friday night fire at Sunoco Logistics in which seven contract workers were injured, including four who were critically burned." The Occupational Safety and Health Administration is already investigating.

"Abandoned pipelines are facing new scrutiny from the Obama administration. The Transportation Department’s Pipeline and Hazardous Materials Safety Administration (PHMSA) issued an advisory bulletin Monday that tightens controls on pipeline operators."

"A puzzling concentration of the greenhouse gas methane over the Southwestern United States appears to come mostly from leaks in natural gas production, scientists said Monday."

"These Catholic social justice advocates are exemplars of the force behind We Are Seneca Lake, one of the nation’s longest-running campaigns of civil disobedience."

"We may be in the clear when it comes to heat domes, but it’s still really hot. More than half the country could see temperatures in the 90s by the end of the week, and if that forecast comes true, you may find relief in the cool, crisp breeze of an air-conditioner. But in the next few years, the way air-conditioners work could change."

"Duke Energy is asking for the first $1.5 million installment on what to date is a $500 million coal-ash cleanup bill as part of Duke Energy Progress’ proposed 14.5 percent rate increase in South Carolina."

"The Environmental Protection Agency’s inspector general won’t investigate allegations that a top EPA adviser knowingly used flawed data in an influential study of methane emissions from oil and natural gas production."

"Science advisers to the Environmental Protection Agency Thursday challenged an already controversial government report on whether thousands of oil and gas wells that rely on hydraulic fracturing, or “fracking,” systemically pollute drinking water across the nation."