The rest of the world may have thought the ozone problem had been solved, but Anderson wasn’t so sure. He persisted in his high-altitude research forays. ER-2 flights from Bangor, Maine, in 1992, ...

The cold winter months may bring temporary relief from Colorado’s long-running ozone pollution problem, but it’s crunch time for air quality planners and regulators hoping to finally clear the air ...

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 ...

While ozone pollution is typically a summer phenomenon in Maricopa County, ozone season stretched well into the fall this year. High ozone levels usually drop off in mid-September, but Maricopa County ...

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The ozone layer, Earth's invisible shield against harmful ultraviolet radiation, sits quietly in the stratosphere between roughly 15 and 35 kilometers above our heads. For decades, scientists watched ...

Getting your Trinity Audio player ready... Colorado continues to fail to clean the dirty air that hangs over the northern Front Range, so state regulators plan to ask the Environmental Protection ...

Chronically high levels of ozone plague Colorado’s Front Range, which stretches from Fort Collins through the Denver metropolitan area and Colorado Springs. Colorado’s Front Range air quality problem ...

Utah’s ozone problem could lead to higher disability rates in children, according to a recently published study. Ozone’s negative effect on lung function and other health outcomes is well documented, ...