News

  1. Earth

    Subglacial lakes may not be isolated ecosystems

    Large volumes of water may occasionally flow between the lakes that lie deep beneath Antarctica's kilometers-thick ice sheet.

    By Sid Perkins
  2. Health & Medicine

    Inactivity, not altitude, is probably behind blood clots

    Low cabin pressure aboard aircraft is not to blame for the rare but dangerous blood clots that some passengers get during long flights.

    By Ben Harder
  3. Astronomy

    Not a planet?

    New observations add to the evidence that an image of a planetary-mass object discovered beyond the solar system is not that of a bona fide planet.

    By Ron Cowen
  4. Anthropology

    Variety spices up Neandertals’ DNA

    A surprising amount of genetic diversity characterized Neandertals.