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As climate change increasingly threatens agricultural production, expanding genetic diversity in crops is an important strategy for climate resilience in many agricultural contexts. In this Essay, we explore the potential of crop biotechnology to contribute to this diversification, especially in industrialized systems, by using historical perspectives to frame the current dialogue surrounding recent innovations in gene editing. We unearth comments about the possibility of enhancing crop diversity made by ambitious scientists in the early days of recombinant DNA and follow the implementation of this technology, which has not generated the diversification some anticipated. We then turn to recent claims about the promise of gene editing tools with respect to this same goal. We encourage researchers and other stakeholders to engage in activities beyond the laboratory if they hope to see what is technologically possible translated into practice at this critical point in agricultural transformation.

Societal Impact Statement Agricultural extension is recognized as an important pathway for generating changes in individual farmers' practices and therefore broader patterns of production. In the United States, historical research has implicated extension work in transformations that privileged White farmers and wealthier operations over other producers and that fostered the industrialization and consolidation of farms. This article examines the work of one early 20th‐century extension agent and the demonstrations he used to teach farmers how to choose and keep corn seeds and to identify the best performing corn varieties for a particular location. This history can inform contemporary efforts to develop more socially and ecologically aware approaches to agricultural research, extension, and production by emphasizing the need for measures of success that align with community‐level objectives and for larger institutional structures that support and sustain such goals. Summary The article examines the histories of agricultural extension and crop development in the early 20th‐century United States. It discusses the role of farm demonstrations, including the participation of farmer‐breeders, in the development of spread of higher yielding corn varieties in the Midwestern states in the 1910s and 1920s. It highlights the emphasis placed on finding locally or regionally appropriate varieties in some early corn extension activities and dwells on the irony that these locally specific endeavors played a role in the development of universalized solutions. The article examines and contextualizes an unusual archival document as an entry point into these histories: The Cornbelt's Last Open Pollinated Corn, a two‐volume work prepared by Martin Luther Mosher (1882–1982). Mosher was the first county agricultural extension agent in the state of Iowa and worked in extension until his retirement in 1950. The article makes three main observations: (1) The Cornbelt's Last Open Pollinated Corn is best read as an agricultural demonstration; (2) The Cornbelt's Last Open Pollinated Corn is Mosher's attempt to grapple with the material legacies of his extension work in relation to the different agricultural life he idealized; and (3) Mosher's work exemplifies the complex relationships and expectations seen among breeders, seed companies, extension agents, and farmers in the early 20th‐century United States. The article concludes that Mosher's work with open‐pollinated corn varieties offers insight into the importance of agricultural extension as a means of crop development and highlights the contingent nature of agricultural industrialization. Agricultural extension is recognized as an important pathway for generating changes in individual farmers' practices and therefore broader patterns of production. In the United States, historical research has implicated extension work in transformations that privileged White farmers and wealthier operations over other producers and that fostered the industrialization and consolidation of farms. This article examines the work of one early 20th‐century extension agent and the demonstrations he used to teach farmers how to choose and keep corn seeds and to identify the best performing corn varieties for a particular location. This history can inform contemporary efforts to develop more socially and ecologically aware approaches to agricultural research, extension, and production by emphasizing the need for measures of success that align with community‐level objectives and for larger institutional structures that support and sustain such goals.

This special issue examines the historical role of crop sciences and scientists in the uneven and often inequitable development of today's global food system. The 14 papers in this special issue explore a range of crops, countries, and cultures, focusing on the dynamic historical relationships among ecologies, societies, knowledge systems, and technologies that have produced the institutions and insights of crop science and, as such, condition the possibilities for the future of food. Photograph: “Tomato inspection.” Undated. Special Collections, USDA National Agricultural Library. https://www.nal.usda.gov/exhibits/speccoll/items/show/12295

Plant breeders have long sought technologies to extend human control over nature. Early in the twentieth century, this led some to experiment with startlingly strange tools like x-ray machines, chromosome-altering chemicals, and radioactive elements. Contemporary reports celebrated these mutation-inducing methods as ways of generating variation in plants on demand. Speeding up evolution, they imagined, would allow breeders to genetically engineer crops and flowers to order. Creating a new food crop or garden flower would soon be as straightforward as innovating any other modern industrial product. In Evolution Made to Order, Helen Anne Curry traces the history of America's pursuit of tools that could intervene in evolution. An immersive journey through the scientific and social worlds of midcentury genetics and plant breeding and a compelling exploration of American cultures of innovation, Evolution Made to Order provides vital historical context for current worldwide ethical and policy debates over genetic engineering.

Agincourt (1415) is an exceptionally famous battle, one that has generated a huge and enduring cultural legacy in the six hundred years since it was fought. Everybody thinks they know what the battle was about. Even John Lennon, aged 12, wrote a poem and drew a picture headed 'Agincourt'. But why and how has Agincourt come to mean so much, to so many? Why do so many people claim their ancestors served at the battle? Is the Agincourt of popular image the real Agincourt, or is our idea of the battle simply taken from Shakespeare's famous depiction of it? Written by the world's leading expert on the battle, this book shows just why it has occupied such a key place in English identity and history in the six centuries since it was fought, exploring a cultural legacy that stretches from bowmen to Beatles, via Shakespeare, Dickens, and the First World War. Anne Curry first sets the scene, illuminating how and why the battle was fought, as well as its significance in the wider history of the Hundred Years War. She then takes the Agincourt story through the centuries from 1415 to 2015, from the immediate, and sometimes surprising, responses to it on both sides of the Channel, through its reinvention by Shakespeare in King Henry V (1599), and the enduring influence of both the play and the film versions of it, especially the patriotic Laurence Olivier version of 1944, at the time of the D-Day landings in Normandy. But the legacy of Agincourt does not begin and end with Shakespeare's play: from the eighteenth century onwards, on both sides of the Channel and in both the English and French speaking worlds the battle was used as an explanation of national identity, giving rise to jingoistic works in print and music. It was at this time that it became fashionable for the gentry to identify themselves with the victory, and in the Victorian period the Agincourt archer came to be emphasized as the epitome of 'English freedom'. Indeed, even today, historians continue to 'refight' the battle - an academic contest which has intensified over recent years, in the run-up to the sixth hundredth anniversary year of 2015.