News

  1. Earth

    Fertility and Pollution: Dirty air, ozone linked to sperm troubles

    Men develop lower sperm counts and produce more sperm with fragmented DNA when the air has higher levels of ozone and other pollutants.

    By Ben Harder
  2. Computing

    Untangling a Web: The Internet gets a new look

    A new mathematical model of the Internet shows that it may not be as vulnerable to centralized attacks as previous research suggested.

    By Katie Greene
  3. Humans

    Nobel prizes: The power of original thinking

    The 2005 Nobel prizes in the sciences honor a gutsy move, optical brilliance, and chemical crossovers.

    By Nathan Seppa, Peter Weiss and Aimee Cunningham
  4. Planetary Science

    Saturnian sponge

    The first close-up portrait of Saturn's icy moon Hyperion reveals a spongy-looking surface unlike that of any other known moon.