Large amounts of untreated sewage flow daily from Mexico into Imperial Beach, Calif. That has closed beaches and sickened residents.

Repealing California’s automobile policy is central to Mr. Trump’s agenda of bolstering the production and use of fossil fuels in the United States, while eliminating policies that promote ...

A federal judge will hold a hearing on Thursday over California’s request to block the Trump Administration from using troops in Los Angeles to quell unrest sparked by Immigration and Customs ...

Aerial view of the May 18, 1980, eruption of Mount St. Helens as seen from the southwest. Columns of ash and volcanic gas reached heights of more than 80,000 feet. Courtesy of the U.S. Geological ...

The Santa Ana winds are expected to strengthen into Sunday morning with gusts of 30 to 50 mph in coastal areas, and up to 70 mph in the mountains.