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AIDS Virus Jumped from Chimps

Does Tetracycline Limit Heart Attacks?

Fair Warning

Biomedicine

Science News Books

Budget Boosts Information Technology

Correction: Insulin-Resistance Gene Defect Identified

Half-Asleep Birds Choose Which Half Dozes

New Element Leaves Lightweights Behind

Aid for Brain Deficits?

DNA’s Evolutionary Dilemma

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