P-22, L.A. celebrity mountain lion, euthanized due to severe injuries

A coalition of California tribes and environmental groups is calling for U.S. Environmental Protection Agency oversight of the state water board.

Federal officials call upon states to prepare for urgent water cuts — and permanent reductions as a hotter, drier climate shrinks the Colorado River.

Colorado River reservoirs continue to fall toward 'dead pool' levels, prompting growing calls for urgent action to cut water use in seven states.

The Biden administration is pushing electric vehicles as the future. So are major automakers. But how will that play out in red states? We travel to small-town Indiana to find out

Gov. Gavin Newsom's appointees voted unanimously to reduce payments to homes and businesses that go solar.

A water-strapped celebrity enclave that has long relied on imported supplies has taken a significant step toward water recycling.

Areas reliant on the Colorado River have been spared restrictions — until now. A call for conservation in those places could become mandatory.

If you're buying something to improve the energy efficiency of your Southern California home, there's likely to be a government rebate to cut the cost.

Carbon neutrality requires more than a plan backed by bold statements. California has more work to do.

The Metropolitan Water District of Southern California is calling on water agencies in the region to immediately reduce their use of all imported supplies.

A new mission from NASA's Jet Propulsion Laboratory will study water on Earth from space, ushering in a new era in the study of climate change.

Scientists at Lawrence Livermore National Laboratory say they've produced a nuclear fusion reaction that generated more energy than it required to ignite.

Despite some improvements in snowpack and soil moisture, experts warn that California still has a long way to go to truly reverse its historic dry streak.

Safely growing seafood in federal waters could help stabilize supply for consumers, drive job creation and meet the demand for sustainably sourced, nutritious protein.

A winter storm moves across Southern California, bringing additional rain to the region and snow to the mountains, leading to dangerous roads.

The city is nearing the completion of a $600-million project that will revitalize a long-contaminated water source and Superfund site.

The California's Air Resources Board, who have been mandating emission standards for decades, recently voted to stop selling new gas cars in the state by 2035. But in this political climate, can California continue to lead the way?

A storm brought 3 to 4 feet of snow in the Sierra Nevada and heavy rains across California. The state would need more winter storms to begin to ease the drought.

Critics and even supporters say the switch could add to an influx of homeless people and would cost $1 billion a year. Proponents believe legislative solutions can be found.

Household wells in California are drying up in record numbers due to drought and groundwater overpumping. Rural families are the hardest hit.

The L.A. County Department of Public Health has issued cold weather alerts for parts of the county this week because of concerns about frigid temperatures.

The new ordinance bans the distribution and sale of expanded polystyrene products, which are commonly referred to by the trade name Styrofoam.

Los Angeles County supervisors are calling for an examination of the area's flood control infrastructure after a recent study suggested shortcomings.

With a growing sense of sorrow, the Pomo Indian tribes of Clear Lake are watching a generations-old symbol of abundance fade into extinction.

Southern California air regulators have released a sweeping plan to help reduce smog pollution, but it will fall short of federal requirements.

Brazil's incoming president, Luiz Inácio Lula da Silva, has pledged to reverse years of neglect in the Amazon rainforest, halting destruction in Indigenous reserves.

The state's decarbonization policy will cut pollution and greenhouse gases, but the price of gasoline is likely to remain persistently high.

The L.A. City Council passed an ordinance Friday that requires the phaseout of oil drilling in the city within 20 years.

The Department of Water Resources announced an initial allocation of just 5% of requested supplies from the State Water Project.

Light drizzles graced Southern California overnight Thursday, and a few isolated showers are expected throughout the day, the National Weather Service said.

UCLA researchers say California is overdue for a megaflood that would effectively turn the state into a "vast inland sea." Climate change isn't helping this inevitability.

With another dry year ahead, state water officials are stressing that water conservation efforts must continue in 2023.

The Biden administration has committed $250 million for projects to control dust and restore habitat around the shrinking Salton Sea.

Cool air moving through the Southland is expected to deliver gusty winds, freezing temperatures and a potentially significant storm by week's end.

After serving as subjects of biomedical experiments, these weary chimpanzees are headed to a better life in the world's largest chimp sanctuary.

Increased groundwater demand and less precipitation because of drought have forever altered the state, but several sectors will be hit especially hard.

Extreme heat waves such as the one that hit the Pacific Northwest last year may be 20 times more likely to occur if carbon emissions are not reduced.

A third year of severe drought forced California farmers to leave an estimated 752,000 acres of farmland idle this year, according to a new report.

The grant raises the odds that the plant will operate past 2025 to help handle power shortages despite opposition from anti-nuclear and environmental groups.

With the worst of fire season behind us, experts say this year's reduced fire activity has less to do with strategy and more to do with luck.

In a welcome harbinger for fish, tribes and the environment, four Klamath River Basin dams will finally come down.

California authorities have conditionally approved a controversial desalination plant in a small city with many low-income families in Monterey Bay.

In a new study, scientists begin to map underground channels that are optimal areas for recharging California's groundwater in the Central Valley.

Federal regulators have approved a plan to demolish four Klamath River dams, a historic act that is intended to save imperiled salmon.

The desert tortoise is teetering on the brink of extinction. Can California's Endangered Species Act save it from oblivion?

Water agencies that supply cities along the Colorado River are pledging to boost conservation and target 'nonfunctional' grass to address the water shortage.

As climate change shrinks the glaciers on Africa's highest summit, life changes on the mountain even as trekkers return in droves.

Traditionally, scientists have been discouraged from engaging in advocacy. But with the climate crisis, attitudes are changing.

The DWP will halt the practice of shutoffs as a debt collection tool for residents enrolled in its EZ-SAVE program and its Senior Citizen Lifeline Discount Program, officials said.