Multi-Image Photogrammetry to Record and Reconstruct Underwater Shipwreck Sites

Methods to record shipwreck sites have evolved considerably in the past two decades. Digital technology and marine robotics regularly present faster and more precise ways to excavate, clean, tag, and record ship remains, while computers simplify many of the steps involved in the reconstruction of ships from their archaeological remains. At the same time, the internet is creating opportunities to share primary data in real time and on a wide scale. This paper presents a methodology used by the authors to record and reconstruct the wooden structures of a 19th-century shipwreck in southern Brazil (Lagoa do Peixe site) and of a 16th-century shipwreck in Croatia (the Gnali? shipwreck).     

‘To Prostitute the Elements’: Weather Control and Weaponisation by US Department of Defense

The US military has a long and robust history of scientific research programs, often conducted in conjunction with civilian scientists at non-military governmental agencies as well as universities. These programs flourished in the immediate post-Second World War and the early cold war years, as the field of military science expanded to address the sprawling Soviet threat. One area of growth was in atmospheric science, which had already taken off preceding Second World War in conjunction with the growth of air warfare. Advances in meteorology, cloud science and climatology enabled military interests to align with weather forecasters and also agricultural interests, as old ideas about cloud seeding and weather control were revived in the light of new research. The military, largely through the Air Force, advanced a series of projects investigating the potential of weather and climate control, manipulation, and ultimately weaponisation. These programs, which were sometimes linked to US Department of Agriculture programs aimed at improving agricultural production, persisted for decades. Some of the newly developed tools were deployed: local climate manipulation efforts during the Vietnam conflict were aimed at impeding traffic along the Ho Chi Minh Trail, with mixed results. Significant efforts came during the Weather Bureau leadership of Francis W. Reichelderfer, whose papers contain a wealth of information about efforts ranging from cloud seeding to proposals to drop atomic weapons on hurricanes. These papers, along with those of Weather Bureau scientist Harry Wexler, provide a fascinating window to a time when the US military and scientific establishment seemed poised to grasp the levers of power over nature itself. This paper describes these little-studied programs, and situates these efforts within the broader military science programs accompanying the emergence of air warfare, as well as post-war science programs aimed at countering the Soviet challenge.     

Healthy discretion? Breastfeeding and the mutual maintenance of motherhood and public space

Although idealizations of motherhood are ever in flux, specific historical moments can be said to produce distinctive tropes of ‘good’ motherhood that have very real impacts on how women act and conceptualize themselves as mothers. This article examines good motherhood in its current iteration, and how now-common beliefs about breastfeeding are implicated in its construction. Furthermore, it looks at the ways in which idealizations of motherhood discipline the breastfeeding body so that it will fit into public space without disruption. I discuss the contradictory impacts of characterizations of the good mother as they appeared in the pro-breastfeeding dialogs that arose following a 2007 incident in which a mother was asked to cover herself up while nursing in a Kentucky restaurant. I posit that while these characterizations helped to make breastfeeding a more widely accepted public activity, they also had the effect of reifying a very narrow conception of what it means to be a good mother. I make this claim through an analysis of two common refrains heard in pro-public-breastfeeding arguments: breast milk is exceedingly healthy and mothers should not be persecuted if they nurse discreetly. Although these assertions together are compelling to the general public in that they provide a scientific justification for breastfeeding while at once assuaging fears of discomfort presented by a reproductive act being performed in a public space, I suggest that they also work to discipline women and maintain public-space-as-usual.     

Executives, Legislatures, and Decentralization

This article considers the role of executives and legislatures in authoring decentralizing legislation to study the type of decentralization each sought to achieve. I find that differences across branches are more significant than differences across political parties. The executive played a significant role in the process of decentralization emphasizing administrative forms of decentralization. Congressional efforts to write laws, on the contrary, focused on the political aspects. Thus, the involvement of both branches in policymaking contributed to the multidimensional form and high degree of decentralization in Colombia.     

A new Palaeolithic discovery: tar-hafted stone tools in a European Mid-Pleistocene bone-bearing bed

Two stone flakes partly covered in birch-bark-tar and a third without tar on it were discovered in fluvial gravel and clay in central Italy, in association with the bones of a young adult female Elephas (Palaeoloxondon) antiquus and several micromammals. The probable chronology of the stone flakes is compatible with the late Middle Pleistocene suggested by the site's small mammals and geological context. The fauna indicates a cool stadial episode before isotope stage 6. That age means the flakes are the oldest ever found hafted with tar and indicate a greater capacity for late Middle Pleistocene hominins to utilize raw materials available during cold phases.