First Insights into the Technique Used for Heat Treatment of Chert at the Solutrean Site of Laugerie‐Haute,France

The earliest evidence of flint and chert heat treatment was found in the ~21.5–17 ka old European Solutrean culture. The appearance of pyrotechnology as part of the production of stone tools has important implications for our understanding of Upper Palaeolithic technological evolution and the specific adaptations during the last glacial maximum in Europe. However, the techniques and procedures used to heat‐treat rocks during the Solutrean remain poorly understood. No direct archaeological evidence has so far been found and the most promising approach is to understand these techniques by determining the parameters with which flint and chert were heated at that time. In this study, we investigate the heating temperature of 44 heat‐treated laurel‐leaf points from Laugerie‐Haute, using a non‐destructive technique based on infrared spectroscopy. Our results document that most of the artefacts were heated to a narrow interval of temperatures between 250 °C and 300 °C. This indicates a standardized technique that allowed to created similar conditions during successive heating cycles. The implications of these results for our understanding of the technical complexity during the Solutrean must be discussed in the light of different heating techniques used at different places and periods.     

Migration,the Urban Periphery,and the Politics of Migrant Lives

This paper explores the politics of migration through a focus on labor migration regimes and the urban lives of migrants in the Seoul Metropolitan Region of South Korea. In particular, it draws attention to the ways in which migrant lives highlight the limits of the contemporary emphasis on control in migration management regimes. The paper contends that while migration management certainly reworks the socio‐legal status of migrants, the desire for control is often displaced in the everyday presence and practices of migrants as urban residents. In order to develop this argument I focus on the notion of the urban periphery as a spatio‐temporal configuration that manifests marginalization but is also potentially generative, innovative and destabilizing. The paper proceeds by exploring three dimensions of the periphery: (1) the mobile commons that emerges in everyday life; (2) the process of becoming undocumented and the subversion of control; and (3) the tactics of recognition that challenge the peripheral location of migrants. In each case the focus on the urban periphery draws attention to the importance of visibility and invisibility in migration, to the uneven spatio‐temporal configuration of migrant lives in the city, and to the ways in which migrant desires constitute a politics that exceeds what is normatively expected of them.     

The Mythical Shapeshifting of Capital and Petrification of Labour: Deepening Conflict on the Agrofuel Frontier

In the great civilisations of the past, shapeshifting promised a restoration of order in turbulent times in return for the deference of loyal subjects. It was a strategy of the powerful to maintain advantage and could also be used to bind opponents to an undesired form. This study finds its resonance in the contemporary shapeshifting that is the supposed transition from the fossil fuel economy. With reference to the fusion of oil, grain and sugar companies in Brazil's ethanol sector, it explores how amidst economic, environmental and political insecurity these “old villains” of the carbon economy have fused and emerged as the “new heroes” of the green economy. Accounts of dissenting rural subjects, however, unveil the mythical nature of avowed social gains from this shapeshifting. Amidst rural conflict and a successive weakening of regulation, it becomes evident how their petrification, in a metaphorical and increasingly literal sense is required.