News

  1. Health & Medicine

    Folate enrichment pays baby dividends

    The federally mandated fortification of grain-based foods with folic acid has led to a 25 percent drop in the rate of potentially life-threatening neural tube birth defects.

    By Janet Raloff

  2. Worm life span set by chromosome tips

    For worms, longer chromosome tips mean longer lives.

    By John Travis
  3. Humans

    Young Talent on Display: Tomorrow’s scientists and engineers win recognition, rewards

    The three top winners of the 2004 Intel International Science and Engineering Fair hail from high schools on different continents.

    By Ben Harder
  4. Earth

    A Portrait of Pollution: Nation’s fresh water gets a checkup

    Virtually all of America's fresh water is tainted with low concentrations of chemical contaminants, according to a new nationwide study.