Feature

  1. Clearing Insane Minds

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  2. Strange Behavior of Insane Has Meaning

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  3. First Glances at New Books

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  4. What Will the Census Ask You?

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  5. Earth Yields 200,000,000 Amperes

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  6. Isaac Newton’s Library for Sale

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  7. The Electric Ship

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  8. Front Matter

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  9. Planes Displacing Ancient Transport

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  10. Stone Age Men Had Files

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  11. Heart Disease Less Fatal to Young

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  12. The Future of Heating

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