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 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
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
Sen. Bill Cassidy's vote put RFK Jr. over the finish line in his quest to be secretary of Health and Human Services. Finally he's showing he realizes his mistake.| 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
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
California winds spread microplastics from natural fertilizers at higher concentrations than previously known, a team of UCLA researchers has found.| Los Angeles Times
