News

  1. Health & Medicine

    Do acid blockers let microbes reach the colon?

    Suppressing stomach acid while taking antibiotics may allow drug-resistant bacteria to colonize the intestines.

    By Nathan Seppa
  2. Astronomy

    Record-breaking galaxy

    Looking ever deeper into space and farther back in time, astronomers have found a galaxy more distant than any other known in the universe.

    By Ron Cowen
  3. Planetary Science

    Web Special: Clay magic on Mars

    NASA's Mars Reconnaissance Orbiter has just completed a week of picture taking from as low as 300 kilometers above the surface of the Red Planet.

    By Julie Rehmeyer
  4. Chemistry

    Pretty in Pictures: Details of molecular machinery gain Nobel

    This year's Nobel Prize in Chemistry went to a researcher who determined the structure, in atomic detail, of RNA polymerase taken from yeast cells.