Science, Technology, and Health

The Portuguese took sugarcane from their Atlantic island holdings to Brazil in the first decades of the 16th century, using their model of extensive agriculture and coerced labor to turn their new colony into the world’s largest producer of sugar. From the middle of the 17th century through the 20th century, Brazil faced increasing competition from Caribbean producers. With access to abundant land and forest resources, Brazilian producers generally pursued an extensive production model that made sugarcane’s footprint a large one. Compared to competitors elsewhere, Brazilian farmers were often late in adopting innovations (such as manuring in the 18th century, steam power in the 19th, and synthetic fertilizers in the 20th). With coffee’s growth in the center-south of the country during the middle of the 19th century, sugarcane farming shifted gradually away from enslaved African labor. Labor and production methods shifted at the end of the century with slavery’s abolition and the rise of large new mills, called usinas. The model of steam-powered production, both for railroads carrying cane and for mills grinding it, and a work force largely resident on plantations persisted into the mid-20th century. Rural worker unions were legalized in the 1960s, at the same time that sugar production increased as a result of the Cuban Revolution. A large-scale sugarcane ethanol program in the 1970s also brought upheaval, and growth, to the industry.

The Association of Communitarian Health Services (ASECSA) is a transnational, religiously influenced health program in Central America created during the Cold War. ASECSA was founded in 1978 by a small group of international health professionals with ties to programs started by Catholic and Protestant clergy and laity in Guatemala’s western highlands in the 1960s. It introduced a model of healthcare in which Maya health promoters and midwives became partners in healing rather than objects to be cured. Support for the health programs and ASECSA came from secular and religious international agencies, including the United States Agency for International Development (USAID), German Misereor, Catholic Relief Services, and the World Council of Churches. ASECSA was founded to disseminate knowledge of popular health education strategies used by health promoters and midwives to provide preventive and curative medical services to their communities. The education methods grew from Paulo Freire’s Pedagogy of the Oppressed and its use by religious agents influenced by liberation theology. Although it was founded in Guatemala, ASECSA’s publications and meetings attracted participation by health professionals and paraprofessionals from Mexico, Central America, and even the Caribbean. Ecumenical religious centers affiliated with liberation theology in the 1960s and 1970s facilitated the development of popular health programs that played a defining role in the region.

In the long view of history, the charlatan is a merchant in unconventional knowledge defined on the basis of his itinerant existence. Traveling from one marketplace to another, dealing in exotic objects and remedies, organizing shows and exhibitions, performing miraculous healings by appealing to the curative power of words and liniments, charlatans have traversed Europe since early modern times.

Charlatans also crossed the boundaries between popular and learned cultures. Both celebrated and opposed by physicians, scientists and philosophers, the rich and the poor, women and men, they circulated and traded knowledge and artifacts, penetrating the most diverse cultural spheres. Far from being confined to certain countries or regions, they were everywhere, repeating almost the same sales strategies, words, and performances. The repetition of fictitious stories down the centuries and on different continents raises the question of assessing the persistence of tradition in such different contexts.

Charlatans were able not only to discover what local people liked but also to speak their “local language,” as well as adopting the most sophisticated technological innovations as part of their performances. They were sharp observers of traditions and habits in the settings they visited, and they reacted quickly to what was new for attracting audiences and customers. One can say that charlatans combined very ancient products with the most innovative media.

The Mexican government’s civil aviation program implemented elite development strategies during a period of national reconstruction. In the decades following the revolution, political leaders and industrialists attempted to strike a balance between preserving a unique national identity and asserting their country’s place in global affairs as a competitive, modern nation. Nation builders were primarily concerned with improving the nation’s communication and transportation capabilities, although they quickly learned to exploit the spectacle of aviation through the mass media and in public ceremonies, as well. The symbolic figure of the pilot proved an adept vessel for disseminating the values championed by the country’s ruling party. Aviators validated the technological determinism underpinning the government’s development philosophy, while projecting an image of strength abroad.

This article traces the trajectory of aviation development from 1920s through the 1950s. In the process it demonstrates how the social and cultural significance of technology in Mexico changed over time. The establishment of the Department of Civil Aeronautics under the Secretariat of Communications and Public Works (SCOP), in 1928, reflected the ambitions of reform-minded officials who were intent on modernizing the country. Although the onset of the Great Depression slowed aviation development for about a decade, policymakers recommitted to the technology during World War II. President Manuel Ávila Camacho (1940–1946) used it to achieve two of his primary goals: securing the country from the threat of international fascism and shifting the nation from an agrarian to an industrial economy. Wartime aid alleviated material obstacles hamstringing national aviation development, and the rapid growth of tourism to the country in 1940s and 1950s benefited commercial airlines. Presidents Miguel Aléman (1946–1952) and Adolfo Ruiz Cortines (1952–1958) touted the success of the aviation industry as a consequence of their development policies. The near financial collapse of the country’s largest airline, Compañía Mexicana de Aviación (CMA), at the end of the decade nevertheless hinted that the country’s sustained economic growth was less miraculous than officials and foreign observers liked to believe.

In August 1940, President Franklin D. Roosevelt, concerned with Nazi infiltration in the Americas and continental defense, created the Office of Inter-American Affairs (OIAA) and appointed Nelson Rockefeller coordinator. To strengthen ties between the United States and Latin America, including Mexico, Rockefeller implemented cultural programs that included Health for the Americas and Literacy for the Americas to teach illiterate rural inhabitants to read and write in Spanish, and to inform them about health, prevention, and hygiene. Both programs used educational cinema as their main teaching tool, and the OIAA hired filmmaker Walt Disney to produce the films. The health series included thirteen animated cartoons with an average duration of ten minutes, dubbed in Spanish and Portuguese. The themes were drawn in part from the guidelines set out at the XI Conferencia Sanitaria Panamericana (Eleventh Pan-American Health Organization Conference; Rio de Janeiro, Brazil, 1942) to address health care and sanitation. A group of psychologists, cartoonists, health authorities, teachers, and OIAA representatives carried out surveys and field work in various countries before production and test screening began. In this process, Mexico differed from the other countries involved because of Walt Disney’s connections with Mexican schools. Eulalia Guzmán, representative of the Secretaría de Educación Pública (Secretary of Public Education), led in reviewing the educational films, and Disney attended classes with local teachers to discuss the use of film as a teaching tool. In 1943, through the Programa Cooperativo de Salubridad y Saneamiento (Health and Sanitation Cooperative Program) of the Secretaría de Salubridad y Asistencia (Ministry of Health and Assistance, the films were shown in health campaigns throughout Mexico.

In the early modern Spanish Caribbean, ritual practitioners of African descent were essential providers of health care for Caribbean people of all origins. Arriving from West and West Central Africa, Europe, and other Caribbean and New World locales, black healers were some of the most important shapers of practices related to the human body in the region. They openly performed bodily rituals of African, European, and Native American inspiration. Theirs is not a history uniquely defined by resistance or attempts at cultural survival, but rather by the creation of political and social capital through healing practices. Such a project was only possible through their exploration of and engagement with early modern Caribbean human and natural landscapes.

Agrarian societies in Latin America and the Caribbean have accomplished some of the most important and influential innovations in agricultural knowledge and practice in world history—both ancient and modern. These enabled indigenous civilizations in Mesoamerica and the Andes to attain some of the highest population densities and levels of cultural accomplishment of the premodern world. During the colonial era, produce from the region’s haciendas, plantations, and smallholdings provided an essential ecological underpinning for the development of the world’s first truly global networks of trade. From the 18th to the early 20th century, the transnational activities of agricultural improvers helped turn the region into one of the world’s primary exporters of agricultural commodities. This was one of the most tangible outcomes of the Enlightenment and early state-building efforts in the hemisphere. During the second half of the 20th century, the region provided a prime testing ground for input-intensive farming practices associated with the Green Revolution, which developed in close relation with import-substituting industrialization and technocratic forms of governance. The ability of farmers and ranchers to intensify production from the land using new cultivars, technologies, and techniques was critical to all of these accomplishments, but often occurred at the cost of irreversible environmental transformation and violent social conflict. Manure was often central to these histories of intensification because of its importance to the cycling of nutrients. The history of the extraction and use of guano as a fertilizer profoundly shaped the globalization of input-intensive agricultural practices around the globe, and exemplifies often-overlooked connectivities reaching across regional boundaries and between terrestrial and aquatic environments.