News

  1. Health & Medicine

    No Fluke: New weapon against tropical parasite

    An experimental drug shows potential against schistosomiasis.

    By Nathan Seppa
  2. Ecosystems

    Alien Alert: Shrimpy invader raises big concerns

    A shrimplike European invader just discovered in the Great Lakes could prove ecologically disruptive to populations of native lake animals.

    By Janet Raloff
  3. Astronomy

    Fleet Finding: Speed of Milky Way’s companions poses puzzle

    New measurements of the speed of two familiar companion galaxies to the Milky Way suggest some unfamiliar possibilities.

    By Ron Cowen
  4. Health & Medicine

    Folic Acid Dilemma: One vitamin may impair cognition if another is lacking

    The nutrient folic acid is generally good for brain health, but research now suggests that too much of it might harm people who get too little vitamin B12.