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A close-up composite image of a dust particle. The green patches contain bromine, calcium and/or iron. Courtesy of American Chemical Society hide caption

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A team at NASA tests possible maneuvers for the Mars rover Spirit to use to escape the soft soil it has been stuck in since April. NASA/JPL-Caltech hide caption

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A new study suggests that crying infants may be imitating the patterns of the language they heard while in the womb. iStockphoto.com hide caption

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iStockphoto.com

Artist concept of the Ares I-X rocket. Courtesy of NASA hide caption

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In this illustration, new viruses emerge from an infected human throat cell. When you get the flu, viruses turn your cells into tiny virus factories that help spread the disease. Courtesy XVIVO/Zirus hide caption

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This retinal prosthesis has been implanted in the eyes of 32 patients. The device receives wireless data from the camera which it then translates into electronic signals that are sent to the brain, restoring sight. Courtesy Second Sight Medical Products, Inc. hide caption

toggle caption Courtesy Second Sight Medical Products, Inc.

The study tested classically trained violinists and pianists, and found that their brains were much better adapted to discern subtle pitch and tonal differences in sound. iStockphoto.com hide caption

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A snowy tree cricket feeds on a leaf from a mountain dalea plant. Gerardine Vargas hide caption

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Wild Sounds

Slo-Mo Cricket Chirps Reveal Secret Serenades

The slight differences in the patterns of cricket chirps are undetectable to the human ear, but may actually determine how crickets recognize their own kind.

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