Republican members of Congress launched efforts to illegally undo California’s clean car standards today, undermining the Clean Air Act and the state’s authority to adopt strong emissions rules.

Trump administration's proposed rollbacks of federal clean air rules could result in 200,000 premature deaths and 10,000 ...

South Dakota’s wind energy production accounted for more than half of the state’s in-state net power generation.

A Montana coal plant with a history of fighting environmental rules aims to partake in the Trump administration’s plan to ...

They should use a two-pronged approach: scrapping the credits that don’t work and simplifying the ones that do by getting rid ...

A bill in the Montana Legislature that would limit state officials' ability to regulate air quality standards has advanced to ...

This article is authored by Arun Duggal, founder, Centre of Excellence for Research in Climate Change and Air Pollution (CERCA), IIT Delhi.

The facility, in Colstrip, Mont., used a new E.P.A. system for requesting special waivers from President Trump.

The Colstrip plant, located in eastern Montana, has the highest emission rate of fine particulate matter out of any ...

The Trump administration’s attempt to roll back numerous vehicle pollution standards has left states wondering what’s next.

Of the two bills, one targets outdoor air quality, the other looks to tackle indoor air pollution.

Mass firings and regulatory rollbacks come as scientists routinely determine pollution is far more damaging than previously ...