Feature

  1. Air Lines to Span Nation

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  2. Emotions Foretell Diseases

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  3. Anniversaries of Science

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  4. The Scientist

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  5. Man’s Age Now Set at Millions of Years

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  6. Nature Trails Teach Nature’s Lessons

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  7. Nature Ramblings: Humming-Birds

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  8. Earth Will Support Eight Billion People

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  9. Anniversaries of Science

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  10. Will See Eclipse from Air

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  11. First Glances at New Books

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  12. Back Matter

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