With just 600 residents and no cities, Sark, located about 80 miles off the coast of England in the English Channel, is the first dark-sky island. Phllip Capper/Flickr hide caption

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A man has his photo taken by a companion at the top of the the so-called "Rocky Steps" in front of the Philadelphia Museum of Art during a blowing snowstorm Dec. 26. Philadelphia has been pounded by multiple heavy snowstorms this winter and has learned the terrible truth: Sometimes, weather hype is not hype at all. Jacqueline Larma/AP hide caption

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The Indiana Sawing Machine from the 1895 Montgomery Ward & Co. catalogue. Skyhorse Publishing hide caption

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Tools Never Die. Waddaya Mean, Never?

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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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