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  1. Health & Medicine

    Diabetes drug might fight cancer

    A widely prescribed medication with few side effects shows promise in both mice and humans.

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  2. Life

    Feud over family ties in evolution

    Prominent scientists dispute kinship’s role in self-sacrifice among highly social creatures.

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  3. Health & Medicine

    Alzheimer’s trade-off for mentally active seniors

    Staying mentally active may delay the onset of Alzheimer’s disease but may also prompt rapid cognitive decline once symptoms appear.

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  4. Life

    Hints of altruism among bacteria

    E. coli bacteria fight antibiotics with help from drug-resistant neighbors.

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  5. Health & Medicine

    Ovary removal proves beneficial for cancer-prone women

    BRCA mutation carriers who opt for surgery survive longer than those who forgo the operation, a new study shows.