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  1. Health & Medicine

    Damage Patrol: Enzyme may reveal cancer susceptibility

    People with lung cancer show less DNA-repair activity by a certain enzyme than people without the disease do.

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  2. Physics

    Fusion Boost: Promising path to heavy nuclei

    By using radioactive nuclei as projectiles in accelerator-based nuclear collisions, scientists may be able to produce more readily than expected many exotic heavy nuclei that are impossible to make today but are crucial for future advances in nuclear physics.

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  3. 19273

    There is a striking similarity in the wave patterns of the ash plume on the cover of the Sept. 13 issue (above) and those in the gas of the Perseus Cluster pictured in this article.