50 Years Ago

  1. Humans

    From the May 26, 1934, issue

    Extracting bromine from the sea, a new treatment for cancer, and a novel altimeter.

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  2. Humans

    From the May 19, 1934, issue

    Preparing for a stratospheric ascent, the great dust storm of 1934, and the invention of the electron microscope.

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  3. From the May 12, 1934, issue

    William M. Welch and public health, a thymus-gland extract for speeding up growth, and mass-three hydrogen.

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  4. Humans

    From the May 5, 1934, issue

    Steel pipes of the Boulder Canyon project, diphtheria and the blood-brain barrier, and weather effects of volcanic eruptions.