Feature

  1. Enzyme Offers Promise of Alzheimer’s Drugs

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  2. Y2K Problem Looms in Hubble Repair

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  3. Chimps Outdo People in Genetic Diversity

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  4. Soy Slows Growth of Prostate Cancers

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  5. The Whale’s Tale

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  6. Astronomy

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  7. Behavior

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  8. A Controversial Shot in the Arm

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  9. Biology

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  10. Biomedicine

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  11. Back Matter

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  12. Front Matter

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