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  1. Humans

    From the December 6, 1930, issue

    alt=”Click to view larger image”> ENGINEERS CAMOUFLAGE ARLINGTON BRIDGE DRAW Engineers put a span in the Arlington Memorial Bridge and then hid it. So cleverly designed and camouflaged is the million-dollar, double-bascule draw of the Arlington bridge, which is nearing completion here, that it is difficult for one to tell the span made of steel […]

    By Science News
  2. Humans

    From the November 29, 1930, issue

    alt=”Click to view larger image”> CHILD HEALTH WEAPONS FORGED AT WHITE HOUSE CONFERENCE Weapons with which to fight for the health and happiness of American children were forged at the White House Conference on Child Health and Protection, held in Washington last week.