For decades, the United States made steady progress in reducing surface ozone pollution, the main ingredient in smog. But ...

Last October, prime news coverage focused once again on chlorofluorocarbons (CFCs), a chemical substance suspected to cause an especially pernicious, imperceptible form of environmental degradation.

While water in the stratosphere might seem innocuous, the finding made Anderson “profoundly worried,” he recalls. From the decades he had spent studying the depletion of the earth’s ozone layer—the ...

For a large part of the last two weeks, Steven Brown, an air quality chemist with the National Oceanic and Atmospheric Administration, has soared over Colorado’s Front Range in a slow-flying Twin ...

Visit NAP.edu/10766 to get more information about this book, to buy it in print, or to download it as a free PDF.

Add Yahoo as a preferred source to see more of our stories on Google. While ozone pollution is typically a summer phenomenon in Maricopa County, ozone season stretched well into the fall this year.

SALT LAKE CITY (AP) — Almost all of the air pollution in a rural corner of Utah comes from oil and gas drilling and a coal-fired power plant, leading scientists to believe those emissions are ...

Delhi’s notoriously toxic air may appear to be cleaner these days, but it could be hiding a bigger, quieter problem. According to a report in The Indian Express, while the national capital’s nitrogen ...