News

  1. Quantum Physics

    Quantum choice can be counterproductive

    In a puzzling paradox, delivering quantum messages becomes more difficult if the intended recipient offers the sender multiple options for the time and place of delivery.

    By Andrew Grant
  2. Anthropology

    Handed-down tales tell of ancient sea level rise

    Australian Aborigines tell tales of actual, ancient sea-level rises, a contested study finds.

    By Bruce Bower
  3. Earth

    Shortcut math predicts tsunami height quickly

    The September 16 earthquake that rattled Chile proved an unexpected test for new numerical calculations that could provide quicker forecasts of incoming tsunamis.

    By Thomas Sumner
  4. Physics

    Raw chicken, ingenuity make a time-reversal mirror

    A new phase-conjugation mirror sends light waves back where they came from, allowing physicists to reconstruct images even if the original light was severely scrambled.