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  1. Humans

    From the January 15, 1938, issue

    Radio-assisted snowplows, getting to know the "X" particle, and ancient frozen mammoths found in Siberia.

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  2. Animals

    Secret Lives of Worms

    Colorful and compelling, this science-rich, 15-minute video offers an up-close glimpse into the weird world of segmented worms—from nightcrawlers and leeches to feathery coral-dwelling dazzlers. Go to: https://www.sciencenews.org/sn-magazine/april-11-1987

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  3. Astronomy

    X-raying a galactic jet set

    The deepest X-ray portrait ever taken of the galaxy Centaurus A highlights its jets and activity around its supermassive black hole.

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  4. Anthropology

    Infectious Voyagers: DNA suggests Columbus took syphilis to Europe

    A genetic analysis of syphilis and related bacterial strains from different parts of the world fits the theory that Christopher Columbus and his crew brought syphilis from the Americas to Renaissance Europe, where it evolved into modern strains of the sexually transmitted disease.