News

  1. Physics

    Revamping the metric measure of mass

    The units of the metric system are on track for a 2018 makeover.

    By Sarah Schwartz
  2. Planetary Science

    Pluto’s icy landscape comes into view

    The New Horizons flyby reveals varied terrain and evidence of active geology on Pluto.

    By Christopher Crockett
  3. Planetary Science

    Ice flows, haze offer more clues to Pluto’s geology

    New Horizons’ latest data reveal more hints about Pluto’s shrinking atmosphere and possible underground ocean.

    By Ashley Yeager
  4. Animals

    Social pecking order gives roosters something to crow about

    Small groups of laboratory roosters keep to the rankings for orderly morning crows.

    By Susan Milius
  5. Space

    Best cosmic ‘cradles of life’ may be elliptical in shape

    Giant elliptical galaxies might harbor up to 10,000 times as many Earthlike planets than galaxies like the Milky Way.