South Coast Air Quality Management District
A UC Riverside study found that commercially cooked hamburgers cause more air pollution than diesel trucks.
Air quality investigators have confirmed that a foul stench that stretched across Southern California came from the Salton Sea.
A federal lawsuit says the Environmental Protection Agency failed to force officials to crack down on Los Angeles smog.
Southern California’s anti-smog agency overwhelmingly approved a controversial plan that would allow companies to pollute by purchasing emission credits.
The governing board for Southern California’s anti-smog agency is expected to consider a plan that would allow companies to pollute by purchasing emission credits.
A federal appeals court has ruled that Southern California air regulators cannot limit pollution from idling trains because that could preempt federal interstate commerce law.