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  1. Health & Medicine

    Joint Effort: Bacteria in yogurt combat arthritis in rats

    Yogurt containing certain types of live bacteria may help prevent or treat arthritis.

    By Ben Harder
  2. Health & Medicine

    Curbing Allergy to Insect Venom: Therapy stops reactions to stings years later

    Some children don't outgrow an allergy to insect stings, but immunizations against such allergies can protect them into adulthood.

    By Nathan Seppa
  3. Astronomy

    One of Hubble’s Tools Fails: Observatory loses a sharp ultraviolet eye

    With the failure last week of an instrument on the Hubble Space Telescope, astronomers have lost their only sharp ultraviolet eye on the universe.

    By Ron Cowen
  4. Earth

    Protecting Baby: Calcium in pregnancy reduces lead exposure

    By taking calcium supplements during pregnancy, a mother can significantly reduce the lead exposure of her fetus.