History of science's spatial turn has focused on the horizontal dimension, leaving the role of the vertical mostly unexplored as both a condition and object of scientific knowledge production. This special issue seeks to contribute to a burgeoning discussion on the role of verticality in modern sciences, building upon a wider interdisciplinary debate about the importance of the vertical and the volumetric in the making of modern lifeworlds. In this essay and in the contributions that follow, verticality appears as a (...) condition of knowledge production—a set of movements and mobilities, technical challenges, political negotiations, and bodily hardships—and an object of scientific inquiry, requiring new techniques of mapping and visualisation and generative of new insights into physical processes and temporal change. By foregrounding the vertical, historians of science can gain new insights and tell new stories about how science is done in the field, the observatory, and the laboratory, and about how those sciences have helped build a modern, three-dimensional world. (shrink)

On July 16, 1938, Franklin Delano Roosevelt boarded the USS Houston in San Diego and embarked on what would come to be known as the Third Presidential Cruise. Publicized as a presidential fishing trip, the 1938 excursion was considerably more than a summer vacation. Covering 5,888 miles in twenty-four days, it comprised fourteen stops in the territories of five different countries: Mexico, France, Ecuador, Costa Rica, and Colombia. Concluding in Pensacola, Florida, after passing through the Panama Canal, it was an (...) ambitious voyage that involved the intensive use of science as diplomacy, a mere thirteen months before the onset of World War II. On the surface, the cruise, whose collecting activities were supervised by the Smithsonian’s Division of Marine Invertebrates, was a major scientific coup. However, the expedition also had a clear geopolitical goal: to assess the United States’ naval capabilities in the Pacific and to formulate potential military strategies in the event of global war. Thus, the excursion illustrates how science and diplomacy can intersect at pivotal historical moments, and how it can be deployed to implement foreign policy based on military interests. (shrink)

The ability to quantify the relationship between the ocean and the atmosphere is an enduring challenge for global-scale science. This paper analyzes the World Ocean Circulation Experiment, an international oceanographic program that aimed to provide data for decadal-scale climate modeling and for the first time produce a “snapshot” of ocean circulation against which future change could be measured. WOCE was an ambitious project that drew on extensive international collaboration and emerging technologies that continue to play a significant role in how (...) the global environment is known and governed. However, a main outcome of WOCE was an encounter with ocean variability: the notion that the ocean is governed not by the circular currents shown in the popular “conveyor-belt” diagram but by eddies, filaments, jets, and other nonlinear forces. This paper suggests the concept of “productive limits” as an analytic for understanding how ocean variability both prompted new forms of knowledge and the development of a global knowledge infrastructure that is contingent, uneven, and fully entwined with geopolitical dynamics. (shrink)