In November, California voters overwhelmingly passed Proposition 39, closing a corporate tax loophole and using the savings to create the largest state energy efficiency initiative in the country. Now the debate over how to use the money begins.

It's not the frenzy of 1849, but gold mining is quietly making a comeback in California. While some communities are concerned about the environmental costs, others see the chance for a "greener" gold rush.

Hydropower provides a good chunk of California's electricity. It relies on a balance of heavy snow in the winter and heavy runoff in the spring. Climate change threatens to throw that balance out of whack, a problem the government isn't examining.

It's no secret that concussions are endemic in American football at every level, from peewees to the pros, but little is known about the hits that cause them. Stanford University is searching for answers.

One of the giants of climate science talks about extreme weather...and trashes California's plan to cut emissions.

The controversial drilling technique known as hydraulic fracturing has created an oil and gas boom around the country – and that’s left state governments grappling with how to regulate it. Now, California is wading into that fight.

The new oil-and-gas boom that’s sweeping the country may be coming to California. With it comes the controversy over the drilling technique known as hydraulic fracturing – or fracking.

KQED Science explores the growing pains of building an electric car charging network and the fledgling new industry rising up to meet the challenge.

Chevron's Aug. 6 fire re-ignited questions many Richmond residents have asked for years. What does it mean to live next to the largest refinery on the West Coast?

This week, California rolls out the heavy artillery in its attack on climate change with a program called “cap-and-trade.” It’s the most ambitious climate change policy in the country, but not everyone is happy with it.