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Front Matter
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A Nation at Risk?
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Double-Beta Decay Caught in the Act
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Chinese Folk Remedy May Promote Cancer
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Abrupt Extinctions at End of Triassic
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Bringing Back Fading Memories
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Faces of Emotion: Social or Innate?
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'Competition' Cause of AIDS Dementia?
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First Test-Firing for Redesigned Shuttle Booster Rocket
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Hybrid Particle Mimics AIDS Virus