Study: Some Key Metals Growing Scarce

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Report Finds Regulation of Nanotech Inadequate

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Hospital Seeks Quieter Stays for Patients

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Robot Receptionist Dishes Directions and Attitude

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Researchers Discover Skin Color Gene

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Nudging Killer Asteroids Off Course

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Quicker Turnaround for Flu Tests

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'Buckyball' Nobel Laureate Richard Smalley Dies

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South Korea Aims to Ease Stem-Cell Access

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Scientists Create Synthetic Elastic Protein

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Battered Oaks Ready for New Orleans Comeback

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Questions Raised Over Accuracy of Gender Test

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Critics Question Accuracy of Fetus Sex Test

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