News

  1. Archaeology

    Some monkeys accidentally make stone flakes that resemble ancient hominid tools

    A study of Thailand macaques raises questions about whether some Stone Age cutting tools were products of planning or chance.

    By Bruce Bower
  2. Astronomy

    A runaway black hole has been spotted fleeing a distant galaxy

    A bright streak stretching away from a remote galaxy might be the light from stolen gas and new stars caught in the wake of an escaping black hole.

    By Lisa Grossman
  3. Paleontology

    520-million-year-old animal fossils might not be animals after all

    Newly described fossils of Protomelission gatehousei suggest that the species, once thought to be the oldest example of bryozoans, is actually a type of colony-forming algae.