Feature

  1. Our Dependence on Light

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  2. Anniversaries of Science

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  3. Evolution of Whales

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  4. Electricity Fathers Worms

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  5. Center of North America

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  6. Errors Corrected

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  7. Back Matter

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  8. Mathematician as Motorist

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  9. Pale Leaves: Few Vitamins

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  10. Gifted Children a Problem

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  11. Crystals Regulate Radio

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  12. Anniversaries of Science

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