Feature

  1. Mystery of Bird Migration

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  2. Heating Alfalfa Seed

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  3. Measure Dance Energy

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  4. New Element in Pure Form

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  5. Sweden Uses Peat

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  6. Grasshoppers Menace

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  7. Bermuda Biological Station

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  8. Parasitized, Says Inge

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  9. Bee Eugenics

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  10. Hold Jade Precious

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  11. Baldness Baffles Science

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  12. High Chinese Death Rate

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