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  1. Humans

    From the February 22, 1930, issue

    THE “BARREL” OF CORONA When high voltage surges on electric transmission lines jump an ordinary string of insulators, arcs form from one insulator to the other and destroy them. But when both ends of the string are protected by metal grading shields, the arc jumps through the air from shield to shield and saves the […]

    By Science News
  2. Health & Medicine

    Surgery Guide

    Designed for patients and their families, physicians, and students, this Web site provides detailed information about a variety of common surgical procedures, ranging from hernia repair to LASIK for vision correction. Illuminating diagrams and cutting-edge animation accompany each description of a type of surgery.