While the smoke is worst along the Western Slope where the fires are burning, levels are also fluctuating on the Front Range.

They accuse the state of failing to remediate years of pollution by top copper producer Codelco at the expense of people’s ...

Opinion: NYU School of Law's Dena Adler and Kate Welty write that the EPA's attempt to reverse course on regulating vehicle ...

The Pennsylvania county where an explosion at a U.S. Steel plant south of Pittsburgh killed two people and injured more than 10 others ...

A package distribution center that many speculate is owned by Amazon reportedly could expose Eugene, Oregon, residents to ...

A study in Environmental Research found that SCCP exposure involved human health risks, including cancer, kidney problems, ...

The city is racing to put up 277 sensors. Once installed, Chicago will have the most high-quality air monitors in the country ...

"Can be produced and assembled without specialized knowledge or high-tech equipment." Researchers develop foldable ...

Reynosa most polluted city in Tamaulipas as a state review warns of no official air monitoring since 2015 and private ...

Lawsuit seeks to upend a vital partnership to advance the development of zero-emission vehicles for commercial trucking, reduce pollution and save money ...

A landfill operator near Martinez which has been the subject of numerous past regulatory actions related to toxic waste ...

The Trump administration has refused to fund a study that was to have measured toxic air pollution in West Louisville.