News

  1. Plants

    Lowering lilies on the tree of life

    Water lilies may belong on the lowest branch of the family tree of flowering plants, along with a shrub called Amborella.

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  2. Earth

    Infectious stowaways

    A new study finds that ballast water can move huge quantities of cholera germs and other microbes between ports around the globe.

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  3. Earth

    Problems with eradicating polio

    The oral vaccine's live but attenuated virus may in rare cases revert to the disease-causing form, which can then turn up in natural waters even in regions now certified free of the wild-type virus.

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  4. Health & Medicine

    Cancer cells on the move

    A new study suggests how a gene recently linked to liver, skin, and pancreatic cancer also causes an often-deadly form of breast cancer.