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  1. Chemistry

    Fungus foils polymer that defeats recycling

    A common tree-rotting fungus is the first to break down an otherwise impervious resin found in plywood and fiberboard.

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  2. Planetary Science

    Lots of red dust, but not much noise

    In space, no one can hear you scream, but a new analysis suggests that it's pretty quiet on Mars, too.

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  3. Health & Medicine

    Salmonella may join fight against cancer

    Salmonella modified to remove its virulence works as a cancer vaccine, tests in mice show.

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  4. Earth

    Asian sediments betray age of nearby desert

    Grains of silt embedded in thick sediments of northwestern China may settle a debate about the age of the Taklimakan Desert.