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Under a microscope many cancer cells look the same. And since cell lines used in cancer research are anonymous, often shared informally between labs, the only way to definitively know where they came from is with DNA. But many scientists don't do this.

NASA's newest space telescope, NuStar, will soon begin its hunt for black holes. Scientists are hoping to learn more about how they grow and why they're such messy eaters.

Ocean technology has come a long ways since the submersible Alvin made its first dive in 1964. Increasingly, scientists rely on robots, rather than manned subs like Alvin, to explore the earth's depths. But can remote-control exploration capture the thrill of science?

Meet "robo-squirrel." New technology in the emerging field of bio-robotics is helping biologists learn more about animal behavior.

This week we're back in Silicon Valley, with a program called NewME, or New Media Entrepreneurship. It's designed to encourage women and minorities to found technology companies. Seven participants from around the country shared a house in San Francisco for three months, got coached on their business plans and attempted to perfect the art of the pitch.

If you look around Silicon Valley, ideas all seem to be coming from the same kind of people. By a recent estimate, one percent of technology entrepreneurs were African American. Only eight percent of companies were founded by women. One program aims to change this by encouraging more women and minorities to launch companies.

California's Delta has a rich agricultural legacy, but farming there can be a risky business. Dozens of farms have been flooded over the past half century as aging levees have collapsed. Now, scientists are encouraging farmers to switch to a new crop. Instead of growing vegetables, they’d grow something that has all but disappeared in the Delta: wetlands.

California's Delta is a far cry from what it once was. About 97% of its historic marshes have been lost and scientists aren’t quite sure what the Delta once looked like. Now, a Bay Area group is working to reconstruct it through historical detective work.

The Sacramento-San Joaquin Delta has been the subject of a decades-long water war, but most Californians have never heard of it. Can the state break the water deadlock?

This year marks the 75th anniversary of an icon. When it opened in 1937, the Golden Gate Bridge was the longest suspension bridge ever built, constructed in one of the world’s most challenging settings. For the men who poured the concrete, and drove in each iron rivet, it was a life changing experience.