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  1. From the June 18, 1932, issue

    MUDDY MISSISSIPPI YIELDS PEARLS THAT RIVAL ORIENT’S Pearls we usually picture as coming up from limpid greenish tropical sea depths, in the fingers (or perhaps the mouth) of a swimming brown-skinned native. It seems a bit of a comedown to think of pearls coming out of the prosaic waters of the muddy Mississippi–and as a […]

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  2. Physics

    Super Conductors

    Materials that conduct electricity without resistance are known as superconductors. Explore the basic physics and potential applications of these fascinating materials at the American Physical Society’s Physics Central Web site. Go to: http://www.physicscentral.com/action/action-01-3.html

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  3. 19016

    I was intrigued by your article for a couple of reasons.