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  1. Earth

    Underwater landslides tallied near Puerto Rico

    An oceanographic survey off the northern coast of Puerto Rico has found remnants of many underwater landslides, a handful of which were large enough to have caused deadly tsunamis.

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  2. Earth

    Fast-food flies ferry foul fauna

    Houseflies buzzing around fast-food restaurants could be spreading antibiotic-resistant bacteria.

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  3. 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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  4. 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.