Climate

The head of the Los Angeles Department of Water and Power is stepping down to become chief executive of an electric company in her native Puerto Rico. Mayor Karen Bass …

In a ceremony at the White House on Wednesday, executives from seven major tech companies signed a pledge with President Trump to supply their own power for artificial intelligence data …

Leaders of California, Arizona and Nevada are criticizing the Trump administration’s proposals for water cutbacks along the Colorado River, urging it to take a different approach and avoid a court …

U.S. utilities generated a record amount of energy from renewable sources last year, even as the Trump administration implemented a range of policies to stymie green energy. About 1,162 terawatt-hours …

WASHINGTON — Billions fewer birds are flying through North American skies than decades ago and their numbers are shrinking ever faster, mostly due to the combination of intensive agriculture and warming temperatures, …

With desert cities like Phoenix and Tucson bracing for their allotments of Colorado River water to be slashed dramatically, San Diego County’s water agency could for the first time sell …

When Big Bear’s celebrity bald eagle couple’s eggs were eaten by ravens in late January, they didn’t grieve alone. Thousands had watched Jackie and Shadow on livestream, as they meticulously …

If you’re a California homeowner and you’ve been feeling chilly this winter, there are plenty of reasons to go get a heat pump. An all-electric, energy-efficient alternative to gas-burning furnaces, …

Residents concerned about the possible poisoning of Orange County waterways with herbicides have been making their voices heard on Instagram and pressured the county into holding a meeting on the …

Porkchop appeared eager to go home. Under a blazing sun, the green sea turtle thwapped the surface of the San Gabriel River with her sole front flipper as aquarium staffers …