"Engaged in environmental battles with the Trump administration on multiple fronts, California Gov. Gavin Newsom angered some allies on Friday by vetoing a bill aimed at blunting federal rollbacks of clean air and endangered species regulations in the state."

"The Trump administration tried to pin California’s water woes on the homeless, but water quality experts say there is little connection between homeless camps and water pollution."

"Chemicals used for carpets and anti-stain products have been found in water sources for 7.5 million people in California, detailing the extent of the problem as state regulators work to develop safety levels for the contaminants that have been linked to cancer."

"California sued the Trump administration today over EPA's refusal to extend Clean Water Act protections to salt ponds in San Francisco Bay."

"ALDER CREEK GROVE, Tulare County — The all-terrain vehicle cut through heavy brush, bounced over rocks and sliced through the undergrowth as it rumbled up a steep trail toward a meadow dominated by giant sequoia trees high in the southern Sierra Nevada mountains."

"Air quality regulators on Friday killed a years-long push for stronger regulation of a dangerous acid used at two South Bay refineries that has frightened many neighbors, voting instead to accept a voluntary, oil industry pledge to enhance safety measures."

"A massive marine heat wave that caused record warming of ocean waters off the West Coast five years ago, sending salmon numbers crashing and malnourished sea lions washing up on beaches across California and other Pacific states, is back, scientists said Thursday."

"California has just become the first state in the nation to outlaw fur trapping. The Wildlife Protection Act of 2019, signed by Gov. Gavin Newsom Wednesday, will prohibit the trapping of native animals including grey fox, coyote, beaver, badger and mink, along with the sale of their pelts, which often end up in foreign markets."

"The state’s beloved sea mammals have been plagued by the deadly Toxoplasma parasite. They’re catching it from feral and pet cats."