The Times tested for lead, mercury and other heavy metals in Altadena and Pacific Palisades. From respiratory problems to lung cancer, these are the risks of exposure.| Los Angeles Times
The last of the 'do not drink' notices in areas hit by the Eaton and Palisades fires were lifted Friday by state water officials.| Los Angeles Times
The federal cleanup of the Altadena and Pacific Palisades fires was in some ways a historic achievement. But many residents are worried that by moving fast, the results were compromised.| Los Angeles Times
The federal government decided not to test the soil of L.A.'s burn areas for hazardous substances. A Times investigation found high levels of lead and other heavy metals.| Los Angeles Times
Batteries that pair with clean solar and wind energy or just bolster electrical grids in general have completely taken off and are making a big difference on the California grid.| Los Angeles Times
The U.S. Department of Agriculture announced Friday that it will sample the nation's milk supply to test for the H5N1 bird flu virus.| Los Angeles Times
H5N1 bird flu has been discovered in a pig in Oregon, a development that has sparked new concerns among infectious disease experts.| Los Angeles Times
Gov. Gavin Newsom has signed a bill that expands a moratorium on all types of a blood-thinning rat poison that has unintentionally sickened other animals.| Los Angeles Times
The circumstances and positive testing of a raw milk sample in California don't make sense, say experts. Something is amiss.| Los Angeles Times
California health officials reported Tuesday that a child in Alameda County has been infected with bird flu; source unknown.| Los Angeles Times
Health officials have announced six more H5N1 bird flu infections in humans: five in California and the first known case in Oregon.| Los Angeles Times
Federal wildlife officials approved a plan to cull barred owls in order to protect northern spotted owls, but it could be upended by funding cuts and congressional opposition.| Los Angeles Times
Unprecedented numbers of gray whales are being spotted in San Francisco Bay, and nobody really knows why. Experts only have educated guesses about the prevalence of porpoises, dolphins and humpback whales too.| Los Angeles Times
Despite assurances from the federal government that bird flu will be eradicated from dairy cows, some experts worry the disease is here to stay.| Los Angeles Times
Scientists have completed the first comprehensive estimate of mountain lions in California, a vital statistic needed to shape puma-friendly land-use decisions and ensure that the predators can find room to roam, mate and find prey.| Los Angeles Times
The January firestorms damaged water systems in large areas of Altadena and Pacific Palisades. In a new report, UCLA researchers examine the toll on 11 community water systems.| Los Angeles Times
The team of scientists found only one water sample with benzene, suggesting that the water is generally safe to drink across Altadena and the Pacific Palisades.| Los Angeles Times
New research and discussions with dairy farmers in the Central Valley suggests H5N1 bird flu is more widespread among people than the reported numbers indicate.| Los Angeles Times
As officials attempt to determine the extent of bird flu outbreaks among dairy herds, some experts are urging that wastewater surveillance begin immediately.| Los Angeles Times
Although California dairy farmers anticipated a bird flu mortality rate of less than 2%, some say between 10% and 15% of infected cattle are dying.| Los Angeles Times
California officials have announced another batch of raw milk from Raw Farm is contaminated with bird flu.| Los Angeles Times
Bird flu virus was detected in a retail sample of raw milk from Fresno-based dairy Raw Farm, California health officials said.| Los Angeles Times
California's Proposition 12, an animal welfare law, is being targeted by the Trump administration in a bid to reduce egg prices.| Los Angeles Times
Poultry producers, disease experts and government officials are now questioning the practice of widespread culling in response to H5N1 bird flu outbreaks.| Los Angeles Times
Their symptoms were mild, and included common "flu-like" respiratory symptoms and conjunctivitis, or pink eye. None of the workers were hospitalized.| Los Angeles Times
What is driving the unprecedented spread of avian flu?| Los Angeles Times
California winds spread microplastics from natural fertilizers at higher concentrations than previously known, a team of UCLA researchers has found.| Los Angeles Times
