Wildfires and a Western megadrought led to a historic die-off of evergreen trees in the state — nearly twice as bad as the previous worst year. Some researchers have dubbed it "firmageddon."
The most significant part of the U.N. pact is a commitment to protect 30% of land and water considered important for biodiversity by 2030, up from 17% of terrestrial and 10% of marine areas.
The cause for the spill is still unclear. What's known is the type of oil that was piped: tar sands oil, also called diluted bitumen. It's a lot harder to clean up than conventional oil.
California regulators voted to reduce financial incentives for people considering rooftop solar. Climate activists worry that this will undercut greater adoption of solar in the state and nationwide.
For years, powerful farmers in California's Central Valley fought for more water from the state's rivers. Now some are changing course, because there's no more water to be found.
The U.S. agency that's supposed to protect workers' health has all but given up on setting limits on a dangerous chemical released in tire manufacturing. Meanwhile, workers are dying.
A giant laser facility in Livermore, Calif., says it has created net energy from nuclear fusion. It's an important breakthrough, but fusion power remains a distant dream.
P-22 has lived in Griffith Park for a decade, earning nicknames like the "Hollywood Cat" and the "Brad Pitt of mountain lions." He is undergoing health evaluations after exhibiting signs of distress.
For Christmas tree shoppers who want a real live tree that's reusable like an artificial one, there may be another option: rentable potted trees that are planted in the ground when they grow too big.
International atomic experts have warned of a potential nuclear disaster with Ukraine's Zaporizhzhia plant in the middle of a war zone, bringing back terrifying memories of Chernobyl.
Its water level is dropping. Big sinkholes are swallowing up whole tracts of land around it. Here is why a disaster is unfolding at the Middle East's iconic salt lake.
A ruptured pipeline northwest of Kansas City dumped about 588,000 gallons of oil into a creek running through rural pastureland, throwing operator TC Energy's federal permit into question.
The Recovering America’s Wildlife Act calls for dedicating $1.3 billion annually for state fish and wildlife agencies to help restore and protect threatened wild lands and creatures. If it becomes law, Georgia is set to get $27.4 million of those funds.