Air

"Outside Susan Holmes' house in southeastern Oklahoma, visitors are welcomed by an entryway lined with oxygen bottles and a machine that collects and concentrates oxygen from the air."

"Nearly three decades after the world banned chemicals that were destroying the atmosphere’s protective ozone layer, scientists said Thursday that there were signs the atmosphere was on the mend."

"Volkswagen has agreed to pay up to $14.7 billion to settle claims stemming from its diesel emissions cheating scandal, in what would be one of the largest consumer class-action settlements ever in the United States."

"Premature deaths from air pollution will continue to rise to 2040 unless changes are made to the way the world uses and produces energy, the International Energy Agency said on Monday."

"The U.S. Supreme Court on Monday turned aside the latest effort by a group of states led by Michigan to block Obama administration environmental regulations limiting power plant emissions of mercury and other toxic pollutants."

"Oil refineries have sued to overturn a series of new air pollution rules aimed at reducing emissions 20 percent at each of the Bay Area's five gasoline plants, the largest source of industrial pollution in the region."

"Through the Smoke and Fumes Committee, industry blurred the science surrounding air pollution and worked to forestall unwanted regulation."

"Scientists may have significantly underestimated a dangerous source of pollution in the atmosphere, new research suggests. A satellite study, published Monday in the journal Nature Geoscience, has revealed nearly 40 previously unreported major sources of sulfur dioxide emissions — a pollutant that can cause multiple harmful health and environmental impacts and even exacerbate global warming."

"A cloud of noxious particles brewing in the air above the Alberta oil sands is one of the most prolific sources of air pollution in North America, often exceeding the total emissions from Canada’s largest city, federal scientists have discovered."