News

  1. Chemistry

    Smelling the menu

    Mouse breath triggers special cells in the nose that help send a safe-to-eat message.

    By Rachel Ehrenberg
  2. Health & Medicine

    Everyone poops his or her own viruses

    The viral denizens of a person’s intestines are unique and don’t change much over time, a study suggests.

    By Tina Hesman Saey
  3. Earth

    New ‘walking’ fishes discovered in Gulf oil-spill zone

    Pancake batfishes may be getting oiled before they get named.

    By Susan Milius
  4. Paleontology

    Apes and Old World monkeys may have split later than thought

    A 29- to 28-million-year-old primate fossil found in Saudi Arabia assists scientists in timing a major evolutionary transition.