劳斯莱斯的华丽冒险

当人类的“双脚安上了车轮”,机动性有了极大提高,视野更加开阔、自由。汽车为人类探索世界创造了更多可能性,而不少汽车品牌的血脉中也蕴藏着冒险的精神与元素,它们层出不穷的创新,让我们的生活变得更加有趣。拥有108年历史的劳斯莱斯,正如它的标志“欢庆女神”一样,始终伫立在汽车行业的顶尖位置,历经沉浮,仍旧迎风起舞,这或许就是...     

Hunter-gatherer tobacco smoking: earliest evidence from the Pacific Northwest Coast of North America

Chemical analysis of residue extracted from stone pipes and pipe fragments excavated at sites in the southern Pacific Northwest Coast of North America demonstrate that hunter-gatherers smoked the psychostimulant tobacco (Nicotiana sp.) by at least AD 860. Non-farming ethno-historic Native Americans throughout the west gathered and sometimes cultivated tobacco for ritual and religious purposes, but until now the antiquity of the practice on this part of the continent was unknown. Method validation includes chemical characterization of a suite of smoke plants and experimental reproduction of “smoked” pipe chemistry; results indicate biomarkers are traceable for several species commonly smoked by ethnographic native peoples, including tobacco (nicotine, cotinine), tree tobacco (anabasine), and kinnikinnick (arbutin). Developed methods—where residue is extracted directly from the stone or clay matrix of whole and fragmentary archaeological pipes—may be applied in similar studies investigating the spread and use of ritual smoke plants in the ancient Americas and elsewhere.     

Multi-method (TL and OSL), multi-material (quartz and flint) dating of the Mousterian site of Roc de Marsal (Dordogne,France): correlating Neanderthal occupations with the climatic variability of MIS 5–3

Roc de Marsal has yielded numerous remains of Mousterian occupations, including lithics, fauna and combustion features. It was made famous by the discovery of the skeleton of a Neanderthal child. Given the need to date the sequence, TL and OSL were applied on heated flints and quartz, and OSL on unheated quartz. Chronological results combined with palaeoenvironmental data – faunal remains and micromorphological features in the sediments from the cave, pollen proxies and faunal remains from the region – allowed us to place climate variations in southwest France on a numerical time scale. Denticulate Mousterian occupations were dated to the middle of MIS 4 (65–70 ka) and Quina layers either to the very end of MIS 4 or to MIS 3. Interestingly, a faunal pattern showing a mix of red deer, roe deer and reindeer was found to have occurred during MIS 4, which was shown to be consistent with data from other similar sites in southwest France.     

Natural and unnatural complexities: flood control along Manitoba's Assiniboine River

Flooding and flood control long have been topics of concern for geographers and historians of North America, from Gilbert White's foundational work to attempts to understand the recent disaster in New Orleans. This paper considers the problem of flood control along the Assiniboine River in the province of Manitoba, Canada. The first section addresses the local landscape and the larger context, explaining changes in the relevant human and physical geography. The second section examines efforts to mitigate flooding, focusing on how the risk of inundation was shifted in location (not eliminated altogether) and compounded through time (not progressively resolved). The third focuses on a further source of complexity: the contested character of government jurisdiction. This final section also addresses major mid twentieth century changes in mitigation efforts: in the light of flooding on an unprecedented scale, governments became more open to compromise and more willing to undertake substantial projects. Gilbert White asserted that while floods are natural occurrences, flood damages are the responsibility of humanity. The question of responsibility might seem relatively clear in relation to flood mitigation, given that dykes are human constructions. The history of flood mitigation along the Assiniboine would suggest, however, that assigning responsibility for the failures and successes of flood mitigation is not so straightforward.     

Why foragers choose acorns before salmon: Storage,mobility, and risk in aboriginal California

Despite the enormous potential of anadromous fish, foragers do not mass extract and store salmonids until very late in the archaeological record of California. Acorns, by contrast, were intensively used quite early in the record. Salmon are traditionally viewed as a low cost, high ranking resource, and acorns as a high cost, low ranking resource. The question thus arises: why were salmon not used and stored en masse much earlier? We offer a solution using a simple foraging model that distinguishes resources on their storage as well as overall cost, making it possible to calculate the risk of resource caching, which appears to have delayed intensive salmon procurement in California.     

Policy Subsystems and Regimes: Organized Interests and Climate Change Policy

This research is an examination of the role of organized interests in international climate change policy formation. Systematic survey results are used to demonstrate that organized interests actually engage in the same activities in both the international and domestic arenas. This research demonstrates that the climate change negotiations can be characterized as both a policy subsystem and an international regime. It is further argued that these two concepts are in fact highly analogous, thereby facilitating new cross-discipline research opportunities. The research is based on a web survey of organized interests accredited by the United Nations Framework Convention on Climate Change (UNFCCC), and on interviews and field research at the 8th Conference of the Parties of the UNFCCC in New Delhi, India.