Psyched that it's finally spring? Shifts in the season may affect more than your mood. Corbis hide caption

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Cambrian Genomics says that what it calls a DNA printer is essentially a DNA sorter — it quickly spots and collects the desired, tailored stretch of DNA. Courtesy of Cambrian Genomics hide caption

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Mmm. Smells just like your identical twin. iStockphoto hide caption

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iStockphoto

NPR intern Poncie Rutsch takes a crack at making a big sound. Meredith Rizzo/NPR hide caption

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Kevin Lopez at home in Greenbelt, Md. Meredith Rizzo/NPR hide caption

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Will this maker of snus, an alternative to cigarettes, be allowed to claim it is less harmful? Swedish Match hide caption

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