Uncategorized

  1. 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
  2. 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.

    By Ben Harder
  3. Archaeology

    How agriculture ground to a start

    A major advance in agriculture occurred around 11,000 years ago, when western Asians began to walk through patches of wild barley and wheat and scoop handfuls of ripened grains off the ground, a report suggests.