In fin de siècle Argentina a secularist ideology of science was part of the positivist world view espoused by liberals and socialists. Between the years 1910 and 1935, a period in which the Catholic Church experienced a significant cultural expansion, the activities of the Catholic naturalist Ángel Gallardo and the astronomer and priest Fortunato Devoto challenged the so far prevailing idea of science as opposed to religion. This paper explores the connections between the scientific, religious and political aspects of those figures in order to get some insights into the complexity of the relationships between science and secularization in societies with a Catholic majority.

Collecting seeds and specimens was an integral aspect of botany and natural history in the eighteenth century. Historians have until recently paid less attention to the importance of collecting, trading and compiling knowledge of their cultivation, but knowing how to grow and maintain plants free from disease was crucial to agricultural and botanical projects. This is particularly true in the case of food security. At the close of the eighteenth century, European diets (particularly among the poor) began shifting from wheat- to potato-dependence. In Britain and Ireland during these decades, extensive crop damage was caused by diseases like ‘curl’ and ‘dry rot’ – leading many agriculturists and journal editors to begin collecting data on potato cultivation in order to answer practical questions about the causes of disease and methods that might mitigate or even eliminate their appearance. Citizens not only produced the bulk of these data, but also used agricultural print culture and participation in surveys to shape and direct the interpretation of these data. This article explores this forgotten scientific ambition to harness agricultural citizen science in order to bring stability and renewed vitality to the potato plant and its cultivation. I argue that while many agriculturists did recognize that reliance upon the potato brought with it unique threats to the food supplies of Britain and Ireland, their views on this threat were wholly determined by the belief that the diseases attacking potato plants in Europe had largely been produced or encouraged by erroneous cultivation methods.

Around 1960, leading figures in the international conservation circuit – such as Julian Huxley, Frank Fraser Darling and E. Barton Worthington – successfully propagated new visions about the value of undomesticated African mammals. Against traditional ideas, they presented these mammals as a highly efficient source of protein for growing African populations. In line with this vision, they challenged non-interventionist ideals of nature preservation, and launched proposals for active management through game ‘ranching’ and ‘cropping’. As such, they created a new socio-technical imaginary for Africa's future, in which the consumption of wildlife meat took up a central position. This article explores the motivations of Western conservationists for this drastic rebranding. It argues that the rationale of considering African wildlife in terms of protein played an important symbolical role at various levels. It was crucial in the reorganization of the transnational networks of conservation, but also in the boosting of their scientific reputation, in the restructuring of their institutional ties, and in their attempts to maintain an authoritative position for Western ecologists in a rapidly decolonizing world.

Today, the most powerful research technique available for assigning chronometric age to human cultural objects is radiocarbon dating. Developed in the United States in the late 1940s by an alumnus of the Manhattan Project, radiocarbon dating measures the decay of the radioactive isotope carbon-14 (C14) in organic material, and calculates the time elapsed since the materials were removed from the life cycle. This paper traces the interdisciplinary collaboration between archaeology and radiochemistry that led to the successful development of radiocarbon dating in the early 1950s, following the movement of people and ideas from Willard Libby's Chicago radiocarbon laboratory to museums, universities and government labs in the United States, Australia, Denmark and New Zealand. I show how radiocarbon research built on existing technologies and networks in atomic chemistry and physics but was deeply shaped by its original private philanthropic funders and archaeologist users, and ultimately remained to the side of many contemporaneous Cold War scientific and military projects.

Two aerodynamic concepts theorized in the early twentieth century – laminar-flow control and flying wings – offer the potential for more efficient aircraft. However, despite compelling advantages on paper and optimistic predictions, the fuel-saving benefits of these technologies have not yet been fully realized. This paper documents British work on these concepts, with a particular focus on laminar-flow control. Faced with an increasingly difficult funding context and a lack of a clear military rationale, these potentially significant advances in aircraft efficiency were stymied by a catch-22: the government was only prepared to provide financial support for the development of an operational prototype if operational performance had already been demonstrated. This case also highlights the challenges faced in the commercial uptake of radical aviation technologies, even when they appear to offer greater efficiency and environmental benefits.

In the wake of Stalin's death, many Soviet scientists saw the opportunity to promote their methods as tools for the engineering of economic prosperity in the socialist state. The mathematician Leonid Kantorovich (1912–1986) was a key activist in academic politics that led to the increasing acceptance of what emerged as a new scientific persona in the Soviet Union. Rather than thinking of his work in terms of success or failure, we propose to see his career as exemplifying a distinct form of scholarship, as a partisan technocrat, characteristic of the Soviet system of knowledge production. Confronting the class of orthodox economists, many factors were at work, including Kantorovich's cautious character and his allies in the Academy of Sciences. Drawing on archival and oral sources, we demonstrate how Kantorovich, throughout his career, negotiated the relations between mathematics and economics, reinterpreted political and ideological frames, and reshaped the balance of power in the Soviet academic landscape.