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  1. From the December 28, 1929, issue

    YOUTH AND THE SEA “Captain Sylvia,” aged 6 weeks, and her mother, Mrs. J.E. Williamson upon the cover of this week’s issue look at a strange world full of fishes, corals, sharks, morays, and other denizens of the deep. The youthful scientist, symbolic of science itself and its aspirations, was a member of the Field […]

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  2. About Time

    To find out the official time, visit the joint Web site of the National Institute of Standards and Technology and the U.S. Naval Observatory. Two ultraprecise clocks contribute to a pool used to define “coordinated universal time.” These two clocks are not supposed to differ by more than one ten-millionth of a second.