News

  1. Physics

    Speed of light not so constant after all

    Even in vacuum conditions, light can move slower than its maximum speed depending on the structure of its pulses.

    By Andrew Grant
  2. Earth

    Faulty thermometers exaggerated western U.S. mountain warming

    Defective thermometers used in snowpack and ecology research overstated warming in western U.S. mountains.

    By Thomas Sumner
  3. Animals

    Mountain migration is a roller coaster for bar-headed geese

    Bar-headed geese rise and fall to match terrain below them when migrating over the Himalayas.

    By Kate Baggaley
  4. Astronomy

    Rocky planets around cool stars may have Earthlike climates

    Small, rocky planets that sit close to cool stars might be able to keep spinning, creating conditions hospitable to life.