NASA has announced a new effort to send humans back to the moon, possibly to build an outpost by 2020. Mountain View's NASA Ames Research Center will identifies scientific investigations that could be performed there on everything from geology to global warming. But some critics question the space agency's priorities.

It's one of the most unusual car races in the world. In the DARPA Grand Challenge, the cars drive themselves - no remote controls needed. And the contest is not a game. It could change the way all of us drive.

Is California's most controversial water proposal making a comeback? QUEST reports on the fervent politics behind the Peripheral Canal - a $5 billion plan to build a pipeline around the delta, sending Sierra water directly to the state water project.

This fall, fishing was banned or sharply limited in 18 percent of California's ocean waters from Half Moon Bay to Santa Barbara under a landmark state plan. But that was only the first part. Now, scientists need to see how fast sea life recovers. QUEST finds out: how do you count the fish in the sea?

When it comes to alternative energy, most people think of solar or wind. But the hills just north of Sonoma wine country are a world leader in another kind of clean power, and under an ambitious new project, they are about to produce even more.

We've all heard the latest health advice: avoid transfats. Eat more fruits and vegetables. But for many school children, their cafeteria lunch menus haven't caught up. This year, an effort to get healthy foods to the school lunch table is tied up in a much larger debate-- national farm policy.

QUEST radio takes a trip to Point Reyes, where a tug of war is underway over the management of an estuary. What is most ecologically healthy for the estuary-- the preservation of pristine wilderness, or the sustainable stewardship of land and water through farming?

Your tennis shoes. That radio you're listening to. If it wasn't made in the U.S., chances are it passed through the Port of Oakland, the fourth busiest Port in the country. But there's a downside to that convenience and those affordable prices, as Amy Standen reports.

Burning Man is going green. QUEST heads out to the Nevada desert to see how clean tech CEOs are tapping into this counter-culture art festival.

Great white sharks outside the Golden Gate Bridge may get all the attention, but a new tagging program seeks to unlock the secrets of the considerable shark population inside the bay.