News

  1. Paleontology

    Saber-toothed salmon teeth more like tusks than fangs

    Saber-toothed salmon teeth may not have been positioned like fangs at all.

    By Susan Milius
  2. Life

    Gene tweak led to humans’ big toe

    For lack of gene regulator, the human big toe appeared.

    By Tina Hesman Saey
  3. Astronomy

    Black hole burps up gobbled gas and dust

    Two belches from a supermassive black hole are drifting away from another galaxy.

    By Christopher Crockett
  4. Psychology

    Kids grasp words as symbols before learning to read

    Preschoolers grasp that written words refer to specific things before they learn to read.

    By Bruce Bower
  5. Climate

    Arctic passageways let species mingle

    People aren’t the only animals likely to use passages that open up as the Arctic melts.