Uncategorized

  1. Tech

    Roughing up counterfeiters

    A new anticounterfeiting scheme generates unique, reproducible identity codes that could be used to authenticate passports, credit cards, and other items on the basis of inherent, microscopic irregularities in the items' surfaces.

    By Peter Weiss
  2. Astronomy

    Big sky

    The biggest survey of the heavens just got bigger when the Sloan Digital Sky Survey received a 3-year extension.

    By Ron Cowen
  3. Health & Medicine

    Potent Medicine

    Drugs now used to treat erectile dysfunction might soon assume multiple roles in managing heart disease and other conditions, including some that affect women and infants.

    By Ben Harder

  4. 19585

    I wonder if any of the researchers had a pet bird.