In 1776 the Revolutionary Army tried out a revolutionary weapon—the submarine. In 1977 that pioneer craft was re-created to make its perilous dives anew.
BY SPANNING THE MISSISSIPPI at St. Louis, James Eads inaugurated a new era in bridge technology. He also encountered a terrible new hazard for
workers: caisson disease.
IN THE 1950S THE GEODESIC DOME STOOD FOR Cold War and capitalism; a decade later it meant hippies and the counterculture. A lesson in the curious politics of technology.
