News

  1. Space

    Supermassive black hole says sayonara

    Researchers have the first observational hint for the existence of an ejected supermassive black hole, fired by a gravitational rocket from the core of the galaxy in which it formed.

    By Ron Cowen
  2. Humans

    Bear deadline

    Court calls for the already overdue decision on listing polar bears as a threatened species.

    By Susan Milius
  3. Earth

    Molten salts give biofuels a boost

    Making biofuels from the chemical energy locked in plant cell walls has proven difficult, but molten salts may help.

    By Patrick Barry
  4. Astronomy

    Massive minis

    Astronomers have discovered a puzzling group of galaxies in the early universe that are as tiny as babies but as massive as full-grown adults.