News

  1. Tech

    Sound power for deep-space travel beyond sun’s reach

    An unusually efficient new type of power unit for spacecraft uses sound to convert heat to electricity.

    By Peter Weiss
  2. Health & Medicine

    Keeping Cells under Control: Enzyme suppression inhibits cancer spread

    Shutting down an enzyme can slow the spread of cancer in mice.

    By Nathan Seppa
  3. Earth

    There’s a Catch: Recreation takes toll on marine fish

    Recreational fishing isn't just a tiny, harmless nibble on saltwater-fish populations.

    By Susan Milius
  4. Earth

    North and South: Equal melting from each hemisphere raised ice age sea levels

    The gargantuan volumes of meltwater that boosted sea levels during the most recent round of ice ages derived equally from ice sheets in the Northern and Southern Hemispheres.