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Since 1859, attempts to resolve the question of the identity of a sailor from the 1845 Franklin expedition whose body was found that year on the south shore of King William Island have been complicated by contradictory evidence found with the skeleton. Documents found with the body implied the man was Harry Peglar, Captain of the Foretop, but the clothing indicated the man held a domestic rating, a steward or officer’s servant. This paper examines the question of the sailor’s identity through a review of the investigative framework of past attempts to ascertain the man’s identity. It then presents results of comparative DNA analyses conducted on the skeleton and on samples provided by descendants of Harry Peglar and six of the eight stewards. Comparison of DNA profiles obtained from the skeleton with those of descendants of the stewards yielded no matches, but comparison of the mtDNA profile obtained from the skeleton with a presumed descendant of Harry Peglar yielded a match with a genetic distance of 0. We conclude that the DNA and genealogical evidence confirm that the identity of the sailor whose skeleton was discovered in 1859 was that of Henry Peter (“Harry”) Peglar, Captain of the Foretop, HMS Terror.
Conflict activities produce a complex array of environmental vectors of violence. Environmental violence is excess human-produced pollution that directly harms human health. In conflict, most often all pollution produced is in excess. Beyond the reduction in environmental quality and ecosystem services from degradation, the environment as a vector of violence directly assaults human health, often with impacts lasting well beyond the end of a conflict. This chapter focuses on environmental violence from conflict and highlights the complex and myriad ways in which conflict activities, materials, and damages can directly and indirectly harm human health.
A central problem in turbulence is understanding small-scale intermittency, which refers to the sporadic generation of intense fluctuations in velocity gradients and increments. These extreme events, strongly non-Gaussian in nature, govern dissipation, mixing and transport processes in virtually all turbulent flows. Yet, despite decades of study, a faithful and predictive characterisation of small scales remains elusive owing to the inherent mathematical intractability of the Navier–Stokes equations and the difficulty in resolving them in both simulations and experiments at high Reynolds numbers. Recent advances in high-resolution simulations and experiments have significantly reshaped this picture, particularly by providing precise data at high Reynolds numbers to probe the full tensorial structure and dynamics at small scales. In this article, we synthesise the current understanding of small-scale intermittency and universality, drawing on modern data from well-resolved simulations and experiments that resolve the full velocity-gradient tensor. The results show that, while prevailing intermittency theories capture several key trends, they fail to describe or account for observed asymmetries between longitudinal and transverse fluctuations or between strain and vorticity amplification. Evidence suggests that intermittency is closely tied to the dynamics and geometry of vorticity and strain fields, with non-locality playing an important role. We argue that a consistent picture has emerged, but a complete theory will require unifying the statistical scaling frameworks with the underlying dynamical mechanisms that govern gradient amplification. Additional implications of these findings are discussed, and several pressing open problems are identified for future work.
The environment has been leveraged as a tool of control in conflict settings throughout human history. Capturing or enclosing and controlling the resources needed for everyday needs and livelihoods has been a feature of most conflicts. Understanding how this happens and what the implications are for the environment in conflict is critical to addressing environmental and conflict issues. This chapter lays out how this has unfolded in many contexts and highlights critical nuances for different environmental mediums and across space and time.
The environment is almost always a victim in conflict. Conflict activities generally reduce environmental quality, resulting in a loss of ecosystem services that can be cultivated. The environment as degraded covers the range of pathways of environmental degradation from conflict activities, the implications for economic outcomes, and the environmental remediation needed to restore ecosystem functioning.
The current study examines the interaction between a pitching foil and sediment-laden flows, focusing on how particles affect propulsion performance and the sediment dynamics. We show that the presence of particles weakens vortex formation, reduces flow flux and alters the pressure distribution, leading to a decrease in propulsion efficiency. Additionally, sediment deformation and particle suspension under the flow are observed, driven by fluid–structure coupling rather than direct contact with the foil. The coupled dynamics between the foil’s motion, sediment evolution and particle transport creates a feedback loop that influences both the wake structure and sedimentary patterns. Our results underscore the importance of considering the interactions between the foil, flow and particles for a comprehensive understanding of bio-inspired propulsion in sediment-laden environments. This work provides insights for optimising the design and performance of hydrofoils in real-world granular flows and highlights the need for further investigation into the effects of particle types, concentrations and foil motion modes on propulsion efficiency.
Chapter 3, ‘The Amazon as a Place for Global Extractivism: Rethinking Extractivism and Infrastructure in Extractive Frontiers,” explores the governance of extractivism in the Amazon by reflecting on IIRSA infrastructure development and how it relates to extractive activities. The analysis of the entanglements between mega-infrastructures and extractive industries also allows a deeper understanding of extractivism. From a scalar dimension, the Amazon becomes an example of global extractivism, a place where infrastructure and extraction coalesce to feed the global economy and the endless transnational circulation of commodities. From material/immaterial dimensions, infrastructure might be a kind of extractivism in itself when its main goal is profit-making from construction, detached from real prospects for connectivity. In turn, its immaterial dimension refers to how extractive logics permeate infrastructure activities, such as the monetarizing of the knowledge and needs of locals to justify the projects’ socio-economic viability. Considering the re-dimensioning of extractivism, the Chapter provides reflections on how it promotes international economic integration while limiting environmental integration in the Amazon. This raises crucial insights on the proper ways to govern internationally extractive activities.
Growing environmental instability around the globe has the potential to contribute to the onset of violent conflict. However, there is rarely a clear, direct causal pathway between environmental change and conflict because these interactions are always mediated by institutions – social norms, governance, and policy. How the environment can be a potential trigger for conflict is a critical part of the environment-conflict nexus. This chapter explores the broad literature on the topic, drawing out where there is more and less consensus and what the implications are for understanding the environment in conflict.
Chapter 4, “The Amazon as a Place for Global Conservation”, unpacks the tensions and conflicts of conceiving the Amazon as a field of global conservation and examines the prospects to scale indigenous politics of conservation and reimagine conservation policies in the local and international spheres. For this aim, this Chapter discusses the theories for decolonizing conservation, how they help to explain environmental conflicts in the Amazon, and their strengths and gaps. Then, it provides an overview of the conservation architecture and associated conflicts in the Peruvian Amazon through three cases that show the international and local interactions around conservation politics and policies. Ultimately, the Chapter provides insights to revisit critical theories on conservation and the importance of international governance for reinventing conservation practices and policies in the Amazon and beyond.
This study examines the potential influence of deformation on the systematics of Rb-Sr geochronology in mica phases under different conditions. Biotite and muscovite porphyroclasts in deformed specimens were characterized using electron backscattered diffraction, electron probe microanalysis and laser ablation inductively coupled plasma mass spectrometry to quantify spatial variations in crystal lattice orientations, element concentrations and in situ Rb-Sr geochronology. S29, a specimen subjected to deformation at greenschist facies conditions, is characterized by a spread in in situ Rb-Sr two-point isochron spot dates, which exhibit a strong inverse correlation with lattice deformation. As such, these Rb-Sr dates are interpreted to record partial re-equilibration controlled by deformation. Rb-Sr data from white mica in a specimen (NP17-58), which was deformed at lower amphibolite facies conditions, define a single population isochron. No correlation between lattice distortion and Rb-Sr spot dates is noted. Finally, two biotite porphyroclasts and matrix grains in a specimen (AC4), deformed at upper amphibolite facies conditions, define unique, single population Rb-Sr isochrons. The Rb-Sr systematics of the older porphyroclast are interpreted to be mainly temperature-controlled. In contrast, the Rb-Sr systematics for the younger porphyroclast and matrix grains are interpreted to reflect fluid-mediated resetting. The results of this study demonstrate that the multi-faceted influences on Rb-Sr systematics make isolating the effect of deformation difficult. Due to the complexity of the Rb-Sr systematics in deformed specimens, careful consideration of the mica phase analysed, as well as the temperatures, fluids and deformation experienced throughout the rock’s history, needs to be accounted for.
This chapter highlights key findings from the five pillars of the framework and environmental peacebuilding, focusing on future pathways and implications for the environment in conflict, and simultaneously promoting human and environmental flourishing.