Feature

  1. Positron Formally Introduced; Negative Proton Predicted

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  2. Stone Tool in Nebraska Cliff May Reveal Ice Age Americans

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  3. Front Matter

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  4. Earthquake Trapped by Watchful Recorders

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  5. In Science Fields

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  6. Rat-Catching Cats Are Bred to Protect France from Plague

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  7. Gold

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  8. Cooperative Phenomena New Term in Physics

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  9. Trees Still Petrifying in Yellowstone Park

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  10. Camera Pictures Beauty and Progress at Hoover Dam

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  11. Fingerprints May Be Used to Protect Checks from Forgery

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  12. Nature Ramblings: All Fish Is Diatoms

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