News

  1. Animals

    Monarch butterflies’ ancestors migrated

    The earliest monarch butterflies originated in North America and were migratory. Some of the insects later lost that ability as they moved into the tropics, a genetic analysis finds.

    By Kate Baggaley
  2. Animals

    Baby fish are noisier than expected

    Gray snapper larvae may be able to communicate in open water using tiny knocks and growls.

    By Susan Milius
  3. Climate

    Missing winds probably foiled 2014’s chance for El Niño

    Lack of antitrade winds probably hampered 2014 El Niño.

    By Thomas Sumner
  4. Climate

    19th century chronicles offer clues to mystery volcano

    Meteorological records narrow down the time and place of a massive volcanic eruption that helped trigger a decade of extreme cold.