"U.S. EPA [Friday] unveiled proposed regulations that would tighten fuel efficiency standards to significantly cut carbon emissions from tractor-trailer rigs and other heavy- and medium-duty vehicles by 2027."

"Four years ago, in August 2011, U.S. EPA and the National Highway Traffic Safety Administration announced the first federal program to cut carbon emissions from the nation's biggest vehicles by raising the fuel standards those heavy-duty fleets must meet."

"U.S. environmental regulators are expected within days to propose rules to make trucks more fuel efficient, and trucking industry executives and lobbyists familiar with the process said the rules will probably call for boosting fuel efficiency by 2027 nearly 40 percent from 2010 levels."

"The Obama administration is set to announce that it will require new rules to cut emissions from airplanes, expanding a quest to tackle climate change that has included a string of significant regulations on cars, trucks and power plants."

"While the global fracking boom has stabilized North America’s energy prices, Chicago — America’s third largest city and the busiest crossroads of the nation’s railroad network — has become ground zero for the debate over heavy crude moved by oil trains."

"A judge on Thursday denied Royal Dutch Shell's appeal of a ruling that a proposed oil-by-rail project at its Washington state refinery must undergo a full environmental review, just two weeks after a crude train derailment caused a fire in North Dakota."

"President Barack Obama on Thursday called for greater federal spending on infrastructure in the wake of the deadly Amtrak crash that killed eight people."

"The oil industry is challenging new federal rules intended to improve the safety of oil-by-train transportation, opening the first legal fight in a two-year effort to reduce the risks of moving hazardous materials on railroads."

"A train carrying highly volatile crude oil derailed and erupted into flames on Wednesday morning, forcing the evacuation of a small town in North Dakota, according to local and federal officials."