For nearly as long as Los Angeles has been a city ... the local oil refineries and brickyards poured so much sun-dimming smog into the sky that people thought they were experiencing an unpredicted ...

Environmental and public-health groups filed a lawsuit today against the Environmental Protection Agency for failing to ensure that Los Angeles, Sacramento and New Hampshire have effective plans to ...

Photos and news coverage confirm that trucks from other states were assisting firefighters in Los Angeles. As wildfires ... because they didn't meet California's smog-certification requirements.