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  1. Microbe exhibits out-of-body activity

    New evidence indicates that anthrax bacteria may sometimes live freely and reproduce in soil, perhaps exchanging genes with other bacteria, instead of staying dormant in spores.

    By Julie Ann Miller
  2. Animals

    Feral breed lacks domestic dogs’ skill

    Wild dogs that haven't lived with people for 5,000 years share little of the capacity of their domesticated cousins for interpreting human gestures.

    By Ben Harder
  3. Health & Medicine

    HIV infects 1 in 100 in New York

    A change in how New York City officials identify and track cases of HIV infection has yielded the clearest picture yet of how deeply rooted that city's epidemic has become.

    By Ben Harder
  4. Health & Medicine

    Primate virus found in zoo workers

    Viruses related to HIV can be found in the blood of some zoo staff and other people who work with primates, although the infections don't appear to be harmful.