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  1. Health & Medicine

    Gut microbes may foster heart disease

    In breaking down a common dietary fat, helpful bacteria initiate production of an artery-hardening compound, mouse experiments suggest.

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  2. Space

    Fermilab data hint at possible new particle

    For the second time in weeks, results from powerful collisions of protons and antiprotons at Fermilab’s Tevatron accelerator can’t be explained with standard model of physics.

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  3. Life

    Why diversity rules

    A new experiment demonstrates the way a multitude of specialized species absorb nutrients more effectively than a highly productive one.

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  4. Humans

    Genetic roots of ‘orchid’ children

    Kids who inherit certain DNA variants may be most likely to wilt in bad circumstances and bloom in good ones.