"With 360 days a year of pure, unclouded sun, California's Imperial Valley has the potential to become the Silicon Valley of renewable energy."

"A powerful fall storm packing strong winds and rain drenched fire-scarred hillsides around California on Wednesday, and residents from north to south braced for possible mudslides and debris flows."

"In a sign that a deal addressing California's longstanding water supply problems may be near, Gov. Arnold Schwarzenegger convened a special session of the Legislature on Monday to revisit a package of water bills."

"California Gov. Arnold Schwarzenegger desperately wants a bill to fund an overhaul of the state's water system -- so much so he is hinting he may veto more than 700 bills awaiting his signature by midnight Sunday if top lawmakers fail agree to one."

"Clean sand and silt will be used to cover a vast deposit of the pesticide DDT and toxic compound PCB on the ocean floor off Southern California, the U.S. Environmental Protection Agency said Monday."

Federal water managers open valves this week for an ambitious effort to restore salmon from the San Joaquin River.

"Bureau of Land Management's proposal for the West Mojave 'does not contain a reasonable range of alternatives' to limit off-road-vehicle routes in the sensitive habitat, the ruling states."

A new generation of urban, blue-collar environmentalists is waging war over "environmental justice" in the dense, polluted Latino neighborhoods of Los Angeles.