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  1. Humans

    Letters from the January 13, 2007, issue of Science News

    Sunny exposition “The Antibiotic Vitamin” (SN: 11/11/06, p. 312) reminds me that in preantibiotic days, tuberculosis patients were put on a fresh-air-and-sunshine regimen. Could the vitamin D so acquired account for the cures this system sometimes produced? Nancy AxfordSacramento, Calif. Researcher John J. Cannell points to TB sanitariums as anecdotal evidence that sunlight fights infections.—J. […]

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  2. Planetary Science

    From the January 2, 1937, issue

    The beauty of snow, a very large number, and a robot brain machine.

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  3. Earth

    Meteorites on Ice

    Join a recent expedition to the Antarctic to search for meteorites.