Feature

  1. Light Impacts

    Depending on when it's encountered, blue light can be more effective than other hues (or even white light) at waking people, setting their biological clocks, and maximizing visual acuity.

    By Janet Raloff

  2. Violent Developments

    New research has identified a spectrum of interacting elements that contribute to impulsive violence in young people.

    By Bruce Bower
  3. Tech

    Illuminating Changes

    Indoor lighting is undergoing a dramatic metamorphosis toward energy-conserving systems that rely on solid-state technologies.

    By Janet Raloff
  4. Health & Medicine

    Now Hear This

    Genetics research, work with stem cells, and studies of the inner ear's delicate architecture suggest that it might be possible to restore cells pivotal to hearing.