A dollar value will no longer be applied to health benefits from clean air.

The Trump Environmental Protection Agency delivered a significant blow to longstanding US climate policy on Thursday, finalizing rules to revoke a 2009 scientific finding that human-caused climate ...

A proposed environmental settlement has been announced involving Antero Resources Corporation, a major oil and gas company ...

They already face the highest rates of asthma-related mortality in the nation. Dirtier air will make that worse.

The Environmental Protection Agency is eliminating a Clean Air Act finding from 2009 that is the basis for much of the federal government's actions to rein in climate change.

The president signaled his intention to repeal the pollution rules more than a year ago.

Several Pennsylvania communities will be under a Code Orange alert for pollution in the air on Monday.

ANALYSIS: Rescinding the 2009 rule will leave Americans to pay a high price — up to nearly $4 trillion by 2055, and a health risk to tens of millions, writes ...

Last year, an explosion at U.S. Steel's Clairton Coke Works outside Pittsburgh killed two U.S. Steel workers and injured 11 others, including contractors.

Exposure to air pollutants such as particulate matter and nitrogen dioxide may increase the risk for rheumatoid arthritis in ...

An air quality warning is in place for the Windsor-Essex region due to high levels of pollution caused by “stagnant” weather ...