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  1. Math

    From Counting to Writing

    Counting and numbers played a crucial role in the development of writing.

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  2. Quark Colors

    The Jefferson Lab (Thomas Jefferson National Accelerator Facility) in Newport News, Va., offers a six-page coloring book devoted to particle physics and quarks. Use a flash plug-in or download a copy to color the pages and learn about the fundamental particles of matter. Go to: http://education.jlab.org/coloringbook/index.html

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  3. Humans

    From the March 7, 1936, issue

    Canadian caves, television field tests, and violin makers' secrets.

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  4. Earth

    Vesuvius’ Shadow: A major volcanic blast could threaten Naples

    When Italy's Mount Vesuvius begins to rumble again, nearby Naples may be in danger.