"Human emissions of greenhouse gases are driving rapid warming all over the globe — particularly in the Arctic, where temperatures are rising at about twice the global rate. But there's another form of carbon in the atmosphere that may also be playing a role."

"Neil Chatterjee, chairman of the Federal Energy Regulatory Commission, yesterday rebuffed calls for mandatory cybersecurity standards for natural gas pipelines, citing improvement in the industry's effort to strengthen its defenses."

"Senate Majority Leader Mitch McConnell wants to put Democratic presidential candidates in an uncomfortable position by forcing them to vote on the controversial Green New Deal being pitched by rising Democratic star Rep. Alexandria Ocasio-Cortez. But he also wants to promote his own long-held support for not-so-green measures."

"The U.S. Transportation Department on Thursday issued final rules requiring railroads to develop oil spill response plans and to disclose details of shipments to states and tribal governments after a series of high-profile incidents."

"A federal judge on Thursday dismissed a $1 billion racketeering lawsuit that the developer of the Dakota Access oil pipeline filed against environmental groups and activists, saying he found no evidence of a coordinated criminal enterprise."

"The Tennessee Valley Authority board of directors voted to shut down two aging coal-fired power plants, defying a tweet from President Trump on Monday urging the agency to keep one of them open."

"Harley-Davidsons are famous for their iconic deep rumble. But the Milwaukee-based motorcycle maker's latest model features an electric motor that emits a high-pitched whirring sound. Will Harley fans go along for the ride?"

"Los Angeles will abandon a plan to replace three aging gas power plants along its coast with newer natural gas technology and will instead invest in renewable energy as it seeks to move away from fossil fuels, the city’s mayor said on Tuesday."

"Bill Wehrum, the Environmental Protection Agency’s top air policy official, continued to stay in close touch with employees at his former law firm after joining the Trump administration, according to documents released this week under the Freedom of Information Act."

"Protesters in Alaska urged federal officials to keep oil rigs out of the Arctic National Wildlife Refuge despite a federal law requiring lease sales in the wilderness area."