"Unbeknown to California officials, oil producers in Kern County have been disposing of chemical-laden wastewater in hundreds of unlined trenches in the ground without proper permits, according to an inventory that regional water officials completed this week."

"The Los Angeles Fire Department has failed to properly inspect hundreds of hazardous sites scattered across the city, exposing the public to increased risks from potential spills and mishandling of toxic substances, according to a state report released Friday."

"Wet winter storms that dropped up to a foot (30 cm) of rain on parts of California have modestly eased the state's ongoing drought over the past three months, U.S. drought experts said on Thursday."

"The strandings of a record number of sea lion pups along the California coast this year are linked to a puzzling weather pattern that has warmed their Pacific Ocean habitat and likely impacted fish populations they rely on for food, federal scientists said on Wednesday."

"California’s public drinking water systems violated safety levels for contaminants more than 1,000 times during the 2012-2013 fiscal year says a report that cites high levels in some water systems of arsenic, nitrates and other pollutants."

"Four workers suffered minor injuries after a large explosion Wednesday morning at the Exxon Mobil refinery in Torrance [Calif.], according to an Exxon spokesman."

"For the past five weeks, volunteers have been desperately trying to nurse back to health more than a hundred sea lions found stranded along the state's beaches in a mystery that's threatening one of California's most lovable sea creatures."

"Apple has committed nearly $850 million to help build a solar energy farm in Monterey County that will generate power for its California facilities, Apple CEO Tim Cook announced Tuesday."

"California has proposed closing by October up to 140 oilfield wells that state regulators had allowed to inject into federally protected drinking water aquifers, state officials said Monday."