The California Air Resources Board and Environmental Protection Agency said late on Tuesday that Volkswagen AG submitted a plan to fix 80,000 recalled 3.0 liter diesel SUVs and cars that emit up to

Monsanto Co stepped up its defense of a widely used weed killer on Thursday by filing a lawsuit in California seeking to prevent glyphosate, the main ingredient in its Roundup herbicide, from being

Air quality regulators, meeting for the third time this month to address a huge natural gas leak that has forced thousands of Los Angeles residents from their homes, delayed action again on Wednesd

An El Niño-strengthened storm brought widespread rain to drought-stricken California on Tuesday, triggering flooding that clogged roadways, and authorities warned residents about possible mud slide

California’s forests have already lost millions of trees in recent years due to rising temperatures, the drought and a plague of bark beetle infestations.

The warming of the Pacific Ocean caused by the El Niño climate event is “causing havoc” among marine animals off California’s coast, with unprecedented numbers of dead or starving seals being washe

California's forests are home to the planet's oldest, tallest and most-massive trees.

A combination of laser-imaging technology and satellite data has shed new light on the devastating impacts of California’s ongoing drought.