Uncategorized

  1. Earth

    Seismic Speed Traps: Iron-rich regions may slow deep-Earth vibes

    Large quantities of iron-rich minerals may be responsible for the sluggishness of seismic waves traveling through certain regions deep within Earth.

    By Sid Perkins
  2. Physics

    Universe in Flux: Constant of nature might have changed

    Researchers have found signs that one of the constants of nature has undergone a subtle shift since the universe's infancy.

    By Peter Weiss
  3. Humans

    Letters from the April 29, 2006, issue of Science News

    Creating a controversy The real irony of ironies is that evolution has not evolved (“Evolution in Action: The trials and tribulations of intelligent design,” SN: 2/25/06, p. 120). When even mainstream evolutionary scientists propose any change to “the fact of evolution,” they are immediately silenced.