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  1. Health & Medicine

    Sea Sickness: Despite cleaner cruises, diarrhea outbreaks persist

    Improvements in vessel sanitation have apparently contributed to a gradual decline in diarrheal infections on cruise ships, but standard cleaning practices don't reliably wipe out the viruses that are behind a recent rash of outbreaks.

    By Ben Harder

  2. Showing Some Spine: Imaging of nerve cell branches stirs debate

    Two research groups have taken unprecedented, high-resolution images of nerve cells inside the brains of live mice—and come to seemingly contradictory views.

    By John Travis

  3. Showing Some Spine: Imaging of nerve cell branches stirs debate

    Two research groups have taken unprecedented, high-resolution images of nerve cells inside the brains of live mice—and come to seemingly contradictory views.