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  1. Human genes take evolutionary turns

    Researchers have identified a set of genes that has evolved an extensive pattern of alterations unique to people.

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  2. Earth

    This pollutant fights lupus

    A hormone-mimicking pollutant that leaches out of some plastics appears to fight lupus.

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  3. Health & Medicine

    Could refrigeration explain Crohn’s rise?

    Crohn's disease, marked by inflammation of the small intestine, could be caused by refrigeration of meats, a process that selects for hardy bacteria that handle cold temperatures well, researchers hypothesize.

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  4. Tech

    Electronic skin senses touch

    A pressure-detecting membrane laminated onto a sheet of flexible plastic electronics may lead to artificial skin for robots.