News

  1. Animals

    Dee for Danger: Chickadees add notes as threat grows

    Chickadees change their alarm calls depending on how serious a lurking predator seems.

    By Susan Milius
  2. Paleontology

    Killer Bite: Ancient, tiny mammal probably used venom

    Paleontologists have unearthed the remains of an ancient, mouse-size mammal that seems to have had a venomous bite.

    By Sid Perkins
  3. Health & Medicine

    Alcohol increases bacterium’s virulence

    Drinking alcohol can increase the ability of one type of bacteria to cause disease.

    By Christen Brownlee
  4. Health & Medicine

    Ready-to-eat spinach bears tough microbes

    Bagged spinach may contain a significant number of bacteria, many of which are resistant to several antibiotics.