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  1. Health & Medicine

    Bad Blood? Old units might be substandard

    Heart patients who get transfusions of donated blood that's kept more than 14 days fare worse than patients who get fresher blood.

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  2. People move like predators

    Cell phone data shows that people's daily roaming follows statistical patterns also seen in predators.

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  3. Materials Science

    A sticky issue

    Peeling off adhesive tape can be frustrating, and now researchers know why.

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  4. Physics

    Neutron vision

    A new neutron detector might help identify smuggled radioactive materials.

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  5. Animals

    Moths’ memories

    Sphinx moths appear to remember experiences they had as caterpillars, suggesting some brain cells remain intact through metamorphosis.