The expanded number of teams at this year’s men’s World Cup will help make the games the worst for the climate in history, mainly because of massive air travel.

The proposed 140-mile, 500-kilovolt Golden Pacific Powerlink from San Diego Gas & Electric would cut through California’s largest state park, Anza-Borrego.

‘Trash interceptors’ will be installed in the L.A. and San Gabriel rivers to stop tons of plastic from reaching the ocean before the 2028 Olympics.

The White House has told Western states it’s working on a 10-year plan for the overtapped Colorado River that will allow for reassessing cutbacks every two years.

Orange County officials announced they will ‘pause’ spraying herbicides in creeks across the county. The decision came after a social media campaign by residents.

California health officials have released new scientific findings about health risks from exposure to two air toxics present in California’s ambient air, acrolein and ethylene oxide.

The Colorado River is severely overtapped and its reservoirs are declining to critically low levels. Experts analyze what it would take to head off disaster.

California has one of the most successful “virtual power plants” in the world, but it’s on the chopping block.

As more rain is concentrated in heavier storms, many parts of California and the western U.S. are drying, new research shows.

Renewvia Energy Corp., which builds self-sufficient solar-powered mini-grids, is expanding into settlements in four African nations as efforts grow to address the shortage of power on the continent.