This issue of Science in Context presents a collection of historical studies on various aspects of science and its practice as developed in Latin-American contexts. Relatively few scholars working in the history of science, and even in the more general field of “science studies,” have devoted their research to this field. Likewise, relatively little research has been done by scholars of Latin American studies on the cultural, political, and social impact of science, a field that is usually considered to be one of the central, defining aspects of modern, Western civilization.

Between February of 1797 and July of 1798, Francisco Barrera y Domingo, a Spanish surgeon, wrote an extensive treatise on slave medicine in the Caribbean. Entitled Reflexiones Historico Fisico Naturales Medico Quirurgicas, this 894-page manuscript accounts for eighteen years of its author's professional practice in the region. It provides a clear picture of daily life in the sugar plantations as seen through the eyes of a modest surgeon, thus presenting us with an opportunity to explore the ideological and intellectual universe of this “invisible” category of colonial practitioners. Despite its importance, Barrera's Reflexiones remains almost unknown. Only a handful of scholars have even acknowledged the existence of the volume and no systematic analysis of its content is available in English.

This paper argues that eighteenth-century Portuguese scientific policies promoted the inclusion of its main colony, Brazil, in the Enlightenment environment. This was accomplished by innovative initiatives, such as voyages to explore the colonial territory. Natural history activities, especially in mining, remained at the center of this political project and relied on co-opting groups of Portuguese in America. Based on the life of João da Silva Feijó, this article outlines the relevant connections between Feijó's scientific activities and the first Brazilian national expedition in the 1850s, which led to discussion about developing the Brazilian nation. This analysis is aimed toward the growing consensus in historiography of the sciences that scientific activities practiced outside European centers gave rise to complex interactions involving the processes of mondialization of sciences and the construction of a local scientific context.

Os Sertões (Rebellion in the Backlands), by the engineer Euclides da Cunha, is one of the most important books in Brazilian literature, with more than 50 local editions and translations in at least nine languages. Published in 1902 after four years of writing, it is a book about nationality in Brazil that sparked a debate regarding the subject of national consciousness and the connection between a nation's physical landscape, its people, and its culture. The book draws from a wide spectrum of knowledge that synthesizes science and art as the pinnacle of human thought. Cunha was a man of great culture and learning and in this work his professional activities and scientific writings merge to celebrate Brazilian culture in different realms of knowledge. The author worked as an engineer and had connections with the scientific community and the world of natural science. His explicit references to naturalists, travelers, geologists, and botanists reflect the historical moment of scientific knowledge in Brazil in the late nineteenth and early twentieth century, and no less than that, Cunha's personal connections with the local scientific community.

Whereas historiography of the debates on “early man in America” isolates Florentino Ameghino's ideas on human evolution from his paleontological and geological work, this paper presents Ameghino's ideas on human ancestors in regard to the controversies over the origin and dispersion of mammals. Therefore, this paper analyzes the constitution of paleontology in Argentina at the end of nineteenth century by describing, firstly, the Ameghino brothers' organization of research. By tackling this aspect I want also to discuss the place of science in late nineteenth-century Argentina. Secondly, I will sketch “Ameghino's ideas” about Patagonia as a center of distribution of mammals, the age of Patagonian strata, and the South American origin of humankind. The Ameghino brothers' logistics of fieldwork created not only the means for finding a remarkable fossil fauna but also a trap that undermined their scientific credibility. Therefore, I will focus on the problem of fieldwork in “distant” places and of scientific wandering in Patagonia. In the polemics presented here, language, transportation systems, visual representations, and technical devices were crucial elements for the creation of paleontological objects.

In the mid-1940s, Argentina was partially isolated and ruled by a military regime. The political confrontation between the military and the scientific community as well as international pressures played a major role in the failure of the first attempts to cope with nuclear development. Only after the relationship between the military and local scientists was readjusted and control of atomic energy was placed in the hands of the Navy, and Argentina's international relations restored, did nuclear development begin to take off. This paper examines the traumatic process of creating the political and institutional conditions for the reception of nuclear technology in a peripheral context. The key to shaping future policies was the decision made by Argentina's Atomic Energy Commission in April 1957 to construct its first research nuclear reactor instead of buying it as other countries such as Spain and Brazil were doing at the time.

As in other countries, the public in Argentina became aware of the existence of something called “the theory of relativity” only after November 1919. Although the news of Arthur Eddington's eclipse expedition, which provided the first confirmation of Einstein's theory, was poorly reported in the newspapers, by the end of 1920 Einstein had become a household name for the educated middle class of Buenos Aires, the capital city of the country. This was in great measure the result of the activity of a few enthusiastic lecturers. Significantly, none of them belonged to the prestigious Institute of Physics of the University of La Plata, which during the decade of the 1910s was considered the most important center of physical research in Latin America. Between July and August 1920 the Spanish physicist Blas Cabrera – perhaps the greatest popularizer of Einstein's theory in Spain – visited Argentina and talked about relativity. In September Georges Duclout, a French engineer who had graduated from the Zurich Polytechnic and by then was professor of applied mechanics at the School of Exact, Physical and Natural Sciences (FCEFyN) of the University of Buenos Aires, also gave a series of conferences on the subject. That same month José Ubach, a Jesuit astronomer trained at the Ebro Observatory in Spain, and established in Buenos Aires, lectured on relativity at the Colegio del Salvador.

The contemplation of the heavenly vault suggests to any generalizing intelligence the idea of the world suspended within this concavity. During rude barbaric times such as the High Middle Ages – the records of which are precious in this respect – it was thought that this vault rested on the surface of the Earth like a glass bell. And when experience gained firstly by terrestrial travels and afterwards by circumnavigation showed that this was a delusory phenomenon and, at the same time, that the Earth was an autonomous sphere floating within space, the [heavenly] vault became in turn a hollow and translucent sphere containing the concentric world, like the white of an egg surrounding the yolk. Cosmological experience then revealed that the stars were situated at different heights in the supposed vault, which compelled imagining new concentric spheres. Finally, it was discovered that there are neither such spheres nor such a vault; that the amplification and multiplicity of the latter were illusions – as was the concave aspect of the sky – and that the space enclosing the universe is an abyss.