The open pit mine at Molycorp Minerals' rare earths mining and processing facility in Mountain Pass, Calif. The mine is expected to produce 40,000 tons of rare earth minerals each year after a $500 million expansion project. Courtesy of Molycorp Minerals hide caption

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California Challenges China In Rare Earths Mining

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At the Cleveland Clinic, technician Larry Raber and physician Mei Lu practice the ultrasound technique to measure CCSVI in patients with MS on medical student Claudiu Diaconu. Cleveland Clinic Center for Medical Art & Photography hide caption

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Doctor Challenges Cause Of MS And Treatment

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'Lolita' Author Nabokov Was Right About Butterflies

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Genes Play Role In Selecting Friends, Study Finds

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The SpaceX Falcon 9, carrying a Dragon capsule, lifts off the launch pad at Launch Complex 40 at Cape Canaveral on Dec. 8, 2010. NASA hide caption

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NASA Prepares For Risks In Private Space Travel

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Blood Spotting Made Easier

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An Earlier Departure Out Of Africa?

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Science Diction: The Origin Of 'Physician'

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Two Cold Winters Don't Make A Climate Trend

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These primitive tools were found on the eastern edge of the Arabian Peninsula, outside the range of Neanderthals. Researchers say humans may have left Africa earlier than previously thought, crossing what is now the bottom of the Red Sea. Science/AAAS hide caption

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Tools Suggest Humans Left Africa Earlier Via Arabia

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Loss Of Solar Jobs Has Mass. Rethinking State Aid

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The AMA spent nearly $22 million in 2010. Scott Hales/iStockphoto.com hide caption

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Las Vegas police stand guard outside Harrah's hotel-casino in Las Vegas on Feb. 21, 2006. As officer Norman Jahn recalls, police arrested the suspected gunman without firing a shot. Jae C. Hong/AP hide caption

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Police Officer: Don't Call U.S. Gun Violence 'War'

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