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  1. Humans

    From the July 24, 1937, issue

    Records of floods are written in mud, predictions that locusts will invade areas once thought safe, and the Eiffel Tower hosts the world's most powerful television transmitter.

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  2. Physics

    Slick serpent

    Oil poured into a pan of the same liquid drags along a surrounding air layer, which can make it skip in and out of the surface before it mixes in.

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  3. Astronomy

    Heavenly Chemistry: Astronomers announce astrophysical anion

    Astronomers' discovery of a rare negatively charged organic molecule sheds light on conditions in interstellar gas clouds, where amino acids, sugars, and other prebiologic compounds form.

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  4. Sweet Gatekeeper: Receptor depends on sugar and water

    Water and sugar molecules play a previously unsuspected role in the way that a ubiquitous receptor passes chemical messages between cells.