In another swift rebuke of the Trump administration, California officials announced Thursday they plan to sue the federal ...

Today’s decision could upend California’s phaseout of gas-powered cars and diesel trucks, and its battle against air ...

The House and Senate both voted to loosen regulations on air pollutants like dioxin and mercury, which are associated with ...

Global warming will likely hinder our future ability to control ground-level ozone, a harmful air pollutant that is a primary ...

As humans continue to pump more gases into the atmosphere, you've probably seen air quality alerts more often, but what does ...

The U.S. House voted 216-212 to pass a Congressional Review Act resolution to overturn longstanding Clean Air Act protections that limit toxic pollution ...