Japan's nuclear power crisis is renewing debate over the topic of safety at nuclear power plants. Andrea Kissack talks with two men with very different opinions on the issue: Bill Magavern, head of the Sierra Club California and Ed Morse, Professor of Nuclear Engineering at University of California, Berkeley.

In California, a state agency called CalFire is charged with fighting fire in rural areas. But over the years, the line between rural and urban has become much less clear. Governor Jerry Brown proposed to scale back CalFire and help trim the state's budget, but that proposal may go down in flames.

It's been a harsh winter across the US. Snow has blanketed the Sierra Nevada, where the snowpack is well above normal. Lots of snow means good skiing, but it also means an increased danger of avalanches. Lauren Sommer traveled to Lake Tahoe where researchers are trying to understand the inner workings of snow a little bit better.

This year marks the 40th anniversary of a notorious psychology experiment: the Stanford Prison Experiment. It showed that average, well-adjusted people could act cruelly, even sadistically, under the right circumstances. Now, the scientist who led those experiments is wondering whether the opposite is true. Can a regular, run-of-the-mill person be made to do extraordinary, even heroic things?

Oak-covered rolling hills, grassy meadows and roaming cows are still typical scenes in many parts of California. That’s due in part to a state conservation program known as the Williamson Act. For more than four decades, much of California’s ranchland has been protected by the program. But with the state’s budget woes, it’s on the chopping block. And that has both ranchers and environmentalists concerned --as Lauren Sommer reports.

After a series of high-profile recalls, the FDA says it's reconsidering rules that allow cheese makers to use unpasteurized milk in their products. That could mean big changes in Northern California, which has become a hub of artisanal cheese making.

Solar power is booming in California. Last year, state officials approved an unprecedented amount of new solar energy. But both large solar farms and small home rooftop installations have run into challenges. As Lauren Sommer reports, that’s why a new sector of solar is emerging – one that benefits from being in the middle.

This month begins America's long goodbye to the incandescent light bulb. The most common replacement bulbs, CFLs, are just as bright and warm-colored as the old incandescents. So why do so many people complain about them?

After spending hundreds of millions of dollars flooding the market with CFL light bulbs, California utilities are stepping up their efficiency game.

It probably goes without saying: the dentist’s chair isn’t the most popular place to visit. But going the dentist may soon be a very different experience. As Lauren Sommer reports, researchers at the University of California San Francisco are developing new technology that may make dentists' drills less common.