News

  1. Tech

    Microscope goes mini

    The atomic force microscope has been shrunk to the size of a microchip.

    By Peter Weiss
  2. Health & Medicine

    Vitamin C and diabetes: Risky mix?

    Vitamin C supplements may place people with diabetes at increased risk of heart disease.

    By Janet Raloff
  3. Earth

    Ancient Heights: Leaf fossils track elevation changes

    A new technique using altitude-dependent differences in fossil leaves may make it possible to chronicle the rise and fall of mountain ranges over millions of years.

    By David Shiga
  4. Tech

    Magnetic Bit Boost: Quantum rewiring for computer memories

    A quantum-mechanical memory component that might replace electronic computer memories has come closer to practicality.