"The United Farm Workers union sued California’s occupational health and safety agency on Thursday, accusing it of doing too little to prevent farm laborers’ deaths from heat illness."

"State officials who lead California's war on global warming often travel abroad on trips supported by the major greenhouse gas polluters they regulate, a Bee investigation has found. Industry lobbyists and executives routinely join them."

"Sewage spills that have contributed to water pollution in San Francisco Bay will be reduced under two settlements reached last week between the nonprofit San Francisco Baykeeper and the Town of Hillsborough and the neighborhood of Burlingame Hills."

A massive sweep by drug enforcement agents in Fresno County offered new evidence of how illegal marijuana plantations on public lands are scarring the Sierra landscape.

"Tops and tails are becoming much more than garbage at Gills Onions, an onion processor in Oxnard, Calif. Today marks the unveiling of the company's onion-powered electrical system, a first-of-its-kind initiative to turn onion waste into energy."

"A controversial alternative to the ozone-depleting pesticide methyl bromide could be in use in Pajaro Valley strawberry fields next year."

"California's San Joaquin Valley has lost 60 million acre-feet of groundwater since 1961, according to a new federal study. ... The Central Valley is America's largest farming region; it's also the single-largest zone of groundwater pumping."

"The blue, cloudless skies over the Coachella Valley most days hide a darker truth: The area has serious, chronic air pollution challenges."

"A fast-growing kelp from the Far East has spread along the California coast from Los Angeles to San Francisco Bay, worrying marine scientists and outpacing eradication efforts."

"Wine makers are shaking things up in their vineyards. Some of them use natural and organic methods to control pests and weeds instead of using pesticides. Now, one winery has discovered a unique, natural way to prune their grape vines."

"San Joaquin Valley farms are laying off workers and letting fields lie fallow as their water ration falls."

"Los Angeles will eliminate the use of electricity made from coal by 2020, replacing it with power from cleaner renewable energy sources, Mayor Antonio Villaraigosa said."

California this week put in place the toughest restrictions in the world on smog from ships, requiring reductions of more than 80 percent of soot from foreign and US ships out to 24 miles from shore. Tankers, cargo vessels and cruise ships burn bunker fuel, which has sulfur content as much as 1,000 times higher than on-road diesel. The US is moving forward to copy California's rules by 2015. Paul Rogers reports in the San Jose Mercury News.

"A judge has ordered Chevron Corp. to stop work on its controversial oil refinery expansion in Richmond, [Calif.], handing environmentalists their biggest victory in a long fight over the project."

"California officials said Wednesday they are trying to avert the federal government's threat to seize six parks that could be closed to help reduce the state's ballooning budget deficit."