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 ...

Senators, including the two from the state, are concerned about the precedent if legislators don’t follow the guidance about ...

Legislation from U.S. Reps. John Moolenaar (R-MI), Jay Obernolte (R-CA) and Craig Goldman (R-TX) would limit California’s ...

Between the two main engine types seen in automobiles around the world, there is a somewhat complicated gap in pollution ...

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

Congress is one step closer to barring California from enforcing its own emissions standards and banning sales of gas-powered ...

A study published by researchers at the University at Albany has presented the first documented evidence that Adirondack surface waters have made a near full recovery from metal pollution since the ...

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

Utah counties are struggling when it comes to clean air, according to a new report from the American Lung Association and ...