News

  1. Animals

    Puff adders appear ‘invisible’ to noses

    The snakey scent of puff adders proves difficult for even sensitive animal noses to detect.

    By Susan Milius
  2. Astronomy

    New recipe found for making supermassive black hole

    The universe’s first supermassive black holes may have formed directly from gas in colliding galaxies, new simulations suggest.

    By Andrew Grant
  3. Health & Medicine

    Gene behavior distinguishes viral from bacterial infections

    Researchers have identified signatures of viral infection, a distinction that may help doctors tell whether bacteria or a virus is causing trouble.

    By Laura Sanders
  4. Paleontology

    Bubbles may have sheltered Earth’s early life

    Bubbles formed on ancient shorelines offer scientists a new place to look for traces of early life.