News

  1. Archaeology

    Easter Island people used sharpened stones as tools, not weapons

    Sharp-edged stone tools enabled daily survival, not warfare, on Easter Island.

    By Bruce Bower
  2. Humans

    Human DNA found in a Neandertal woman

    Interbreeding between humans and Neandertals happened earlier than thought, leaving traces in the Neandertal genome.

    By Tina Hesman Saey
  3. Astronomy

    Black hole heavyweights triggered gravity wave event

    Those gravity waves came from two black holes more massive than any known outside a galactic core and formed in an environment different than the Milky Way.

    By Christopher Crockett
  4. Health & Medicine

    Lead’s damage can last a lifetime, or longer

    Scientists have known for decades that lead is toxic to the brain, but the mark lead exposure leaves on children may actually stretch into adulthood, and perhaps even future generations.