Data Show Orcas Defy Sleeping

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Imprisoning Bacteria to Isolate Changes

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Doctors Question Ethics of Baby Gender Test

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Roundtable: Raising the Dead, 'Time' Reporters, Iraq Prison

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Report Highlights Cancer Risks of Low Radiation

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Stem-Cell Conference Draws Big Crowd

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Predicting Earthquakes

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Chickadee Calls Carry Specifics on Danger

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Author Examines the Lives of Pioneering Geneticists

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FDA Weighs in on Artificial Hearts

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Recognizing Faces Tied to Single Neurons

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Scientists See Defects in Lab-Grown Stem Cells

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