http://hdl.handle.net/10453/37691 2026-10-15T02:26:03Z http://hdl.handle.net/10453/197049 Title: A dataset of radiocarbon dates from Holarctic mammal collagen purified with high-quality chemistry. Authors: Herrando-Pérez, S; Mitchell, KJ; Southon, JR; Turney, CSM; Stafford, TW Abstract: Radiocarbon dates from megafaunal remains provide insights into climatic and anthropogenic factors shaping past ecosystems. Chronologies have advanced through rigorous chemical purification (pretreatment) of fossil vertebrate collagen for accelerator mass spectrometry (AMS) radiocarbon dating. We present MEGA14C, a comprehensive dataset of late Quaternary AMS radiocarbon dates for Holarctic large-bodied mammals, based on collagen purified by ultrafiltration (92% of records), XAD-2 purification (7%) and hydroxyproline isolation (1%). MEGA14C includes 11,715 dates spanning 8 orders, 23 families, 78 genera, 133 species and 18 subspecies, 27% from extinct taxa, and dominated by Equus, Bos, Mammuthus, Rangifer, Bison, Ursus, Cervus, Canis, Coelodonta and Sus. Where available, geolocation, genetic and isotopic data are provided. Pretreatment is critical for accurate and reproducible radiocarbon measurements, yet 44% of published dates lack this information. We addressed this gap through over 10,000 personal communications (out of >100,000 emails) with researchers and AMS laboratories among the parties involved in fossil dating. This unique dataset supports (pre)historical research and provides a foundation for future expansion and/or integration into a global radiocarbon repository. 2026-02-17T00:00:00Z http://hdl.handle.net/10453/196704 Title: The good, the bad and the ugly: Scenarios of Sino-US competition and their implications for Australian defense policy Authors: Clarke, M Abstract: This paper explores three scenarios for the future evolution of Sino-US ‘strategic competition’ and examines how these trajectories may affect the defense strategy adopted by Australia. It identifies three scenarios for Sino-US relations: the normalization of ‘strategic competition’; the retrenchment of the United States under the second Trump presidency coupled with Chinese resilience under Xi Jinping; and the simultaneous retrenchment of the United States and the stagnation and/or retrenchment of Chinese power. It argues that the first of these scenarios, while presenting significant risks, provides Australia with greater prospects of achieving its core security objectives than the latter two scenarios which confront Australia with the prospect of having its strategic dependency on the United States leveraged by a transactional White House or its economic prosperity undercut by a stagnating China. 2026-01-01T00:00:00Z http://hdl.handle.net/10453/196319 Title: ‘Mumbling with eloquence’: An appraisal of the Biden administration’s national security strategy documents Authors: Clarke, M Abstract: This paper provides an examination of the content of the Biden administration’s triad of national security documents (National Security Strategy, National Defense Strategy and Nuclear Posture Review) and the context in which they were made. The paper’s application of Maria Henke’s four-part criteria to assess “best practice” in grand strategy - defining core strategic goals, identifying and analyzing strategic challenges, designing a coherent logic of action, and translating strategic ideas into coordinated policies–to these documents finds that the Biden administration failed to adequately prioritize the relative challenges posed by China and Russia and failed to elucidate a coherent logic of action through which to respond to those challenges. 2026-01-01T00:00:00Z http://hdl.handle.net/10453/196250 Title: Beyond Growth: How can we end poverty and build a sustainable future? Authors: Chakori, S 2026-08-06T00:00:00Z