News

  1. Astronomy

    Possible perp found in mystery of Milky Way’s missing galaxy pals

    Billions of years of supernovas could explain why galaxies like the Milky Way have so few tiny companions and why those companions have so little mass.

    By Christopher Crockett
  2. Life

    Cities create accidental experiments in plant, animal evolution

    To look for evolution in human-scale time, pick a city and watch a lizard. Or some clover.

    By Susan Milius
  3. Animals

    Reptile scales share evolutionary origin with hair, feathers

    Hair, scales and feathers arose from same ancestral appendage.

    By Amy McDermott
  4. Psychology

    Moral dilemma could put brakes on driverless cars

    Driverless cars race into a moral conflict over saving passengers or pedestrians.