The EPA estimates that between 2007 and 2018 the rule has cut 500,000 tons of sulfur dioxide and 300,000 tons of nitrous ...

State and local officials have struggled for years to get a handle on ozone, a type of pollutant regulated by the federal government. Ozone levels long appeared to be declining in the ...

Cities in California, Texas, and Arizona are expecting air quality to become unhealthy for sensitive groups on Thursday.

The decision bought officials time to avert economic harm, but raised concern from health advocates about the continued impacts of ozone on Arizonans.

Arizona lawmakers have so far allowed the House bill to move forward, despite warnings that it's unconstitutional and a risk ...

The Texas Commission on Environmental Quality has issued an Ozone Action Day, also known as an Air Quality Alert, for the ...

President Trump continues dismantling climate policy with a move of questionable legality that benefits fossil fuels. States are sure to sue.

The Biden administration placed landmark limits on toxic pollutants from petrochemicals and other industries. Now, the Trump ...

A group of 180 Democratic lawmakers wrote a Wednesday letter to Environmental Protection Agency (EPA) Administrator Lee ...

The green light came courtesy of President Donald Trump and was part of a flurry of measures announced to prop up the coal ...

A third of Americans still breathe unhealthy air after decades of improvements—which the Trump administration wants to roll ...

LA Post reports that air pollution levels are rising globally, posing serious risks to public health, and emerging research ...