"Trains heaped with coal pass through Richmond every week on their way to the city’s port. In Parchester Village, a largely black and Latino neighborhood in northwestern Richmond, residents say coal dust blows off the open mounds, covering the grass and coating their screen doors."

"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."

"Two environmental organizations are suing [Maryland] Gov. Larry Hogan for blocking proposed clean air regulations on his first day in office. The Sierra Club and Chesapeake Physicians for Social Responsibility argue that the governor lacked the authority to pull back the rules aimed at reducing nitrogen oxides that are key ingredients in ozone."

"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."

"A federal appeals court [Tuesday] rejected a series of challenges from states, environmental groups and energy companies to U.S. EPA's determinations of which parts of the country meet its standard for ozone, a main component of smog."

A recent study showed that nearly half of Delhi’s 4.4 million schoolchildren have irreversible lung damage from the poisonous air.

"ANN ARBOR, Mich. — Inside the National Vehicle and Fuel Emissions Laboratory here, a mammoth contraption, with steel rollers, advanced electronics and exhaust tubes, is nearing completion."

"A federal court has rejected Kansas’ challenge of the Environmental Protection Agency’s (EPA) disapproval of an air pollution plan from the state."

"New study finds fracking releases cancer-causing chemicals into the air many times higher than the EPA considers safe."