Colorado is now in severe violation of two federal ozone pollution standards, and it must find a way to reduce that pollution ...

The party-line vote marked the first time in the 55-year history of the Clean Air Act that Congress has moved to weaken the ...

If also passed by the House as expected, the action will be the first time Congress has weakened protections under the Clean Air Act.

Lawmakers voted to stop the state from requiring that an increasing share of new trucks sold there have zero emissions.

A study published by researchers at the University at Albany has presented the first documented evidence that Adirondack ...

Critics say the joint efforts are not a coincidence as the restructured agency air program moves to weaken pollution ...

Republicans say the U.S. Environmental Protection Agency was wrong to reinstate the state's air pollution lawsuit policy ...

The facility’s emissions practices released hazardous pollutants into the air across from a residential neighborhood.

The U.S. EPA said it will fine a Burns Harbor steel mill slag processor $190,000 in a settlement for federal Clean Air Act violations.

American Lung Association report found that about 156 million people live in counties plagued by high levels of ozone and ...