An annual report from the American Lung Assn. showed that Los Angeles has improved its air quality but still deserves its ...

Los Angeles is the city with the worst ozone pollution in the country, while Bakersfield is the metropolitan area most ...

The Los Angeles-Long Beach ranked as the nation’s smoggiest region in a report released Wednesday by the American Lung Association, which also faulted the region for short-term and year-round particle ...

Almost half of everyone who lives in the United States breathes unhealthy levels of air pollution, according to the American ...

The “State of the Air” report’s conclusions also spotlight a startling increase: Nearly 25 million more people are breathing unhealthy air compared with last year’s report. That uptick is more than in ...

SACRAMENTO — California is spending $500 million to put an additional 1,000 electric school buses on the road as federal cuts ...

Nearly half of Americans are breathing in unhealthy levels of polluted air, according to the latest "State of the Air" report ...

Restoration for the Los Angeles River has been underway for several decades, but the recent wildfires and drier climate could ...

Under a settlement, the LA port must significantly improve its management of stormwater and groundwater to ensure that toxic ...

For comparison, $28 trillion is a shade less than the sum of all goods and services produced in the United States last year.