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  1. Health & Medicine

    AIDS Abated: Genome scans illuminate immune control of HIV

    Three genetic variations picked out by powerful whole-genome scans help explain why some people develop AIDS quickly while others keep it at bay.

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  2. Health & Medicine

    fryPod: Lightning strikes iPod users

    A jogger wearing an iPod music player suffered second-degree ear and neck burns, burst eardrums, and jaw fractures after lightning struck a nearby tree.

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  3. Materials Science

    Crystal matchmaker

    Nonperiodic structures called quasicrystals can act as interfaces between different crystal structures that would ordinarily not stick to each other.

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  4. Tech

    Double-decker solar cell

    A two-layer, polymer-based solar cell has good efficiency and could be cheap to mass-produce.