1. Physics

    Voltage flip turns magnetism on, off

    Researchers in Japan have made a material whose inherent magnetism can be turned off and on electrically, as long as the material, a novel semiconductor, stays ultracold.

  2. Physics

    Collider is cookin’, but is it soup?

    By making the densest, hottest matter ever in a lab, smashups between fast-moving nuclei in the Relativistic Heavy Ion Collider are coming closer than ever to reproducing the superhot, primordial fluid that presumably filled the universe immediately after the Big Bang.

  3. Physics

    Light Stands Still in Atom Clouds

    Ordinarily in continuous motion, light pulses come to a dead stop in specially prepared atom clouds.

  4. Physics

    From the January 24, 1931, issue

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  5. Physics

    Magnetic Whispers

    Promising new ways to magnetically probe tissues and substances are emerging now that a small research group has proved their once-ridiculed claim of a flaw in the 50-year-old theory behind magnetic resonance imaging (MRI) and similar analytic techniques.

  6. Materials Science

    Soybeans could beef up plywood glues

    Researchers have replaced animal protein with soybean protein in experimental plywood glue, potentially reducing cost and health worries.

  7. Physics

    Heating, simulations get the drop on drips

    Air can buoy a layer of oil and, perhaps, even water leaking through a ceiling, if the air is relatively warm compared with the liquid.

  8. Physics

    Celebrating the laser

    An introduction to the special section on lasers.

  9. Tech

    Beatin’ Those Low-Life Blue-Laser Blues

  10. Particle Physics

    A World-Class Accelerator