Wild scarlet monkeyflowers in California survived a historic drought by relying on a rapid evolution, marking the first time the process has been observed in the wild.

Lake Tahoe went from blizzard to dirt in weeks amid rates of snowmelt that hydrologists described as historic. And now comes a record-shattering March heat wave.

A powerful and unusually early heat dome will affect the West Coast for weeks, smashing March heat records as temperatures rise to summerlike levels.

SACRAMENTO, Calif. (AP) — The Trump administration ramped up a battle with California over the state’s nation-leading vehicle-emission standards Thursday, suing air regulators over rules aimed at ...

Critics are calling out California Gov. Gavin Newsom's “insane" climate policies as the state’s prices at the pump soar significantly above the national average.

Typically, La Niña signals a drier-than-average winter in Southern California — but gives equal chances of a rainy, normal or ...

The story of a wildflower that adapted to a severe drought in California raises hopes that evolution will come to the rescue of species hit by climate change, but there are limits ...

With some gas prices topping $5 a gallon, anything that pushes prices even higher, like emissions crackdowns, will become a political football.

The switch to electric vehicles is shrinking the revenue source that fixes our state and local roads. Democrats can only ...

A potted scarlet monkeyflower would die within a few days without water. But multiple natural populations of the species survived an extreme, four-year drought in California, and researchers now know ...

Hydropower was long the country’s leading source of renewable energy, but it was passed in 2019 by wind and in 2025 by utility-scale solar. It’s still significant, though, with 5.6 percent of U.S.