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  1. Humans

    From the August 13, 1932, issue

    ONLY HALF OF LIGHTNING FLASH IS SEEN BY OBSERVERS Not many years ago, a thunderstorm often meant that the supply of electricity would be interrupted. But now, lightning does not cause power line failures nearly as frequently as it used to; it has been tamed by engineers. Laboratory artificial power lines that duplicate actual conditions […]

    By Science News
  2. Health & Medicine

    One more reason to worry

    A single dose of the AIDS drug nevirapine, given to mothers to help prevent them from infecting their children during birth, may be enough to prod the virus to develop drug resistance.

    By Damaris Christensen
  3. Health & Medicine

    HIV may date back to the 1930s

    Genetic analysis of the AIDS virus suggests it first infected humans in the first third of the 20th century.