Warmer temperatures might be causing plants to emit more chemicals into the atmosphere, adding to one of Phoenix's worst air pollution problems.

The Hunga Tonga volcanic eruption that stunned the world last January injected so much water into the stratosphere that it will likely make the ozone hole larger in the coming years, scientists ...

The closing of this year's ozone hole over the Antarctic continues the positive trend of smaller gaps in Earth's ozone layer ...

Chemicals which caused the hole in Earth’s ozone layer are growing at alarming rates despite an international ban, a new study has found. Chlorofluorocarbons (CFCs), man-made gases once widely used in ...

The U.S. Environmental Protection Agency (EPA), which is forcing Americans to spend billions of dollars per year to address ozone air quality, is actually making the situation worse. The evidence is ...

Emissions of a banned, ozone-depleting chemical are on the rise, a group of scientists reported Wednesday, May 16, suggesting someone may be secretly manufacturing the pollutant in violation of an ...

Sure glad I quit smoking. On the worst wildfire smoke days, Minnesotans are inhaling the rough equivalent of half a pack of cigarettes every day. I have friends who have gotten pretty sick, and they ...

EPA offered a steady defense today of Obama-era ozone standards the agency previously considered scrapping. EPA offered a steady defense today of Obama-era ozone standards the agency previously ...

DENVER ” High ozone readings have Coloradans holding their breath as sizzling temperatures bake engine exhaust and other emissions into a pollutant hard on people with respiratory problems and the ...

York County’s air quality will be in the Code Orange range for Thursday, according to the Pennsylvania Department of Environmental Protection. AirNow, which measures air quality across the county, ...

Smog can trigger a variety of health problems in children, the elderly and people of all ages who have lung ailments. Smog forms on warm, sunny days and is made worse by the chemicals that exit ...