"A U.S. judge blocked California from requiring that the popular weed-killer Roundup carry a label stating that it is known to cause cancer, saying the warning is misleading because almost all regulators have concluded there is no evidence that the product’s main ingredient is a carcinogen."

"Unless people intervene, U.S. Pacific Coast marshes could vanish as the ocean rises, eliminating wildlife habitat, storm surge protection and carbon storage."

"Oakland Unified [school district] estimates it will cost $38 million to address high lead levels in water taps at its schools."

Genetics may be the key to saving California's ancient coastal redwoods from the climate change that threatens them.

"Stewart Resnick is the biggest farmer in the United States, a fact he has tried to keep hidden while he has shaped what we eat, transformed California’s landscape, and ruled entire towns. But the one thing he can’t control is what he’s most dependent on — water."

"The snowpack that's essential for California's water supply is at critically low levels again this year—approaching the historic lows of the state's prolonged drought, which officially ended in 2016."

"The Interior Department is exploring making wholesale changes to a massive California desert renewable energy zone that could lead to opening environmentally sensitive areas designated for conservation to possible commercial-scale wind, solar and geothermal power projects."

"The U.S. region most vulnerable to tsunamis - the massive waves of water unleashed by undersea earthquakes - is dangerously under-prepared, experts and officials in Oregon and Washington state said after a magnitude 7.9 earthquake this week."

"California’s attorney general on Wednesday said the state plans to sue the Trump administration over its repeal of Obama-era rules meant to address public safety concerns in hydraulic fracturing, or fracking, on federal lands."

"Nearly 5 million gallons of sewage spilled into the ocean on California’s Central Coast after a filter at a water treatment plant got clogged and the computer system failed to sound an alarm, an official said Monday, forcing several popular beaches to close."