News

  1. Earth

    Killer Crater: Shuttle-borne radar detects remnant of dino-killing impact

    Radar images gathered during a flight of the space shuttle Endeavour 3 years ago show the subtle topography related to the impact of an asteroid or comet that may have wiped out the dinosaurs 65 million years ago.

    By Sid Perkins
  2. Health & Medicine

    Tough Nut Is Cracked: Antibody treatment stifles peanut reactions

    Researchers have successfully demonstrated the first preventive drug treatment against peanut allergy.

    By Nathan Seppa
  3. Physics

    Bunches of atoms madly morph

    While investigating the instability of tiny clusters of atoms, scientists observe ultrasmall salt grains switching shapes at a stupendous rate.

    By Peter Weiss
  4. Astronomy

    Ordinary matter: Lost and found

    Astronomers believe they have finally found the whereabouts of most of the ordinary matter in the universe.