Merchant has been impressed to witness a typical day in LA with much lighter smog levels. In fact, the LA basin has seen vehicle-related air pollutants decrease by about 98 percent since the 1960s ...

Since 1997, nitrogen oxides have decreased 70% in the air basin. The majority ... plan to achieve federal smog standards. This story originally appeared in Los Angeles Times.

First come the fireworks, then comes the thick blanket of smog. Air quality officials are ... worst of the year for air quality in the L.A. basin. The flashy shows leave behind dust, metal and ...

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 ...