This year's El Nino weather pattern could be the most powerful on record, US forecasters said, while warning that the effects of the weather system are never certain.

In another sign that El Niño is gaining strength and could soak California this winter, sea surface temperatures in the Pacific Ocean have increased to their highest level so far this year.

It's a mystery that has wildlife officials scratching their heads. It seems as if deer are dying near a popular hiking spot next to Lodi Lake in California.

On the hot, empty road that leads from Las Vegas to the shocking beauty of Red Rock Canyon National Conservation Area sits Cactus Joe’s nursery.

Exceptionally warm water moving from the western Pacific Ocean towards South America has caused El Niño to get even stronger in recent weeks.

The wildfire that has raged across more than 100 square miles of parched terrain was 30% contained on Wednesday, the California department of forestry and fire protection said.

China’s policymakers are working on a new initiative for spurring the usage of green vehicles, taking their cue from measures previously launched in the state of California.

A long-simmering dispute between automakers and U.S.

Plains All American Pipeline LP's ruptured California oil pipeline may have spilled 41 percent more crude than currently estimated, the company said on Wednesday.