At least 14 people are facing federal charges tied to L.A. immigration protests as more demonstrations pop up around the U.S.

A 3.4-magnitude earthquake hit off the Southern California coast, the U.S. Geological Survey reported. The 7-mile deep quake ...

As if Southern Californians needed something else to worry about, dangerous air quality is threatening parts of the region.

An earthquake struck off the coast of Los Angeles near Manhattan Beach, shaking parts of Southern California up to two hours ...

The toxic algae bloom that's been killing and sickening so many sea lions and other marine mammals has finally ended.

Near-shore tsunamis, those triggered by earthquakes just off the coast, could pose a particularly dire risk for California’s ...

Air quality regulators in Southern California are debating proposed rules that would curb harmful emissions from gas-powered ...

It was one of the largest, longest and most lethal harmful algae blooms in Southern California's recorded history, claiming ...