Feature

  1. Health & Medicine

    Standing Up to Gravity

    Studies in space can help physicians better understand a disorder in which patients get faint or dizzy while standing.

    By Damaris Christensen
  2. Astronomy

    A Dark View of the Universe

    Two new studies suggest that galaxies may be surrounded by vast halos of dark matter extending at least 1.5 million light-years from each galaxy's center.

    By Ron Cowen
  3. Physics

    Catch a Wave

    Detection of gravitational waves predicted by Einstein's 1916 general theory of relativity may finally occur, thanks to a new generation of laser-based observatories.

    By Peter Weiss
  4. Anthropology

    Ishi’s Long Road Home

    The reappearance of a California Indian's preserved brain, held at the Smithsonian Institution since 1917, triggers debate over the ethics of anthropological research and the repatriation process.