An Ozone Action Day has been issued for the Houston, Galveston, and Brazoria areas due to possible high levels of air pollution.

Is the latest legislative effort to exempt classic cars from California’s emissions laws about to run out of gas? The answer ...

Congress may stop California from implementing its first-in-the nation rule banning the sale of new gas-powered cars by 2035.

An analysis by WHYY News shows the increased traffic could raise Philly’s transportation sector carbon emissions by around 4%.

Before the EPA, the US environment was not federally protected. Vintage photos show Los Angeles before regulations limited ...

Air pollution levels keep getting worse for more ... Coal- and natural gas-fired power plants create it, as do cars, agriculture, unpaved roads, construction sites and wildfires.Particle pollution ...