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             Links   
            When North Goes Southwww.psc.edu/science/Glatzmaier/glatzmaier.html
 Dr. Gary Glatzmaier of the University of California at Santa
              Cruz, one of the geomagnetism experts featured in the NOVA program
              "Magnetic Storm," maintains this informative Web page, where you
              can view animations and read accurate information on magnetic
              field reversals.
 
 
            USGS Geomagnetism Homepagegeomag.usgs.gov
 The U.S. Geological Survey (USGS) offers an extensive selection
              of magnetic field models, maps, time lines, and other data.
 
 
            National Geophysical Data Centerwww.ngdc.noaa.gov
 Though it seems quite technical, this site offers a wide variety
              of fun activities geared around the topic of Earth's magnetism.
              Visit the site's Educational Resources section and print out
              colorful magnetic field posters, take a quiz on geomagnetism,
              browse glossaries and FAQs, and more.
 
 
            The Aurora Pagewww.geo.mtu.edu/weather/aurora
 The Michigan Technological University's Web site features a
              detailed page on auroras, where you can browse images, find dozens
              of links, and even listen to the sound an aurora makes, which is
              caused by electromagnetic energy vibrations.
 
 
            Aurora Viewing Tipssec.noaa.gov/Aurora
 Give yourself the best possible chance of seeing a real-life
              aurora display in the night sky with these viewing tips offered by
              the National Oceanic and Atmospheric Administration (NOAA).
 
 
            Magnetic Orientationwww.unc.edu/depts/oceanweb/turtles/mag1.html
 This is part of a much larger site that details the work of
              researchers Ken and Catherine Lohmann, who study the fascinating
              migratory abilities of loggerhead sea turtles. Several pages
              beginning here describe experiments that revealed how loggerheads
              detect and use the Earth's magnetic field.
 
 
 
             Books   
            The Magnetic Field of the Earth: Paleomagnetism, the Core, and
              the Deep Mantle
            by Ronald T. Merrill, Michael W. McElhinny, and Phillip L. McFadden.
            New York, Academic Press, 1996.
           
            Magnetic Orientation in Animals
            by Roswitha Wiltschko. New York: Springer-Verlag, 1995.
           
            The Aurora Watchers Handbook
            by Neil Davis. Fairbanks: University of Alaska Press, 1992.
           
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