Macusani obsidian from southern Peru: A characterization of its elemental composition with a demonstration of its ancient use

Transparent obsidian artifacts have been reported for the northern Lake Titicaca Basin. Based on instrumental neutron activation analysis (INAA) of these artifacts a distinct chemical group was identified. Yet, the location of the source of transparent obsidian in the southern Andes remained unreported in the archaeological literature. This paper reports on the chemical composition and geographic location of a source of transparent obsidian from the Macusani region of Peru. Through the use of INAA and portable X-ray fluorescence (PXRF) we demonstrate that Macusani obsidian or macusanite comprises (at least) two chemical groups. One of these groups was used for making artifacts during the Archaic Period. Artifacts made of this obsidian were found more than 120 km from the source and yet, one-third of the obsidian artifacts encountered at Macusani were from the non-local source of Chivay which is 215 km to the southwest.     

An anthropology of impossible futures

This guest editorial explores the intricate relationship between anthropology and the concept of impossible futures, focusing on the global push towards electric vehicles (EVs) and the lithium energy assemblage. Drawing inspiration from a lecture by palaeobiologist Mark Williams, a member of the Anthropocene Working Group (AWG), the author reflects on the Anthropocene epoch and the human-caused transformations of the earth. It examines the European Green Deal's impact on the automotive industry, the global struggle for lithium and the paradoxes of green technology investments. It questions the feasibility of the envisioned future, emphasizing the contradictions within global capitalism and the potential futility of climate change mitigation efforts. The author calls for a reorientation in anthropological research, focusing on novel forms of unity, solidarity, justice and interspecies bonds in the face of seemingly impossible conditions. It concludes with a contemplation of anthropology's role in translating and understanding social life in the context of unattainable futures without losing sight of the discipline's contested past and inherent hope.     

Defining and redefining atheism: dictionary and encyclopedia entries for “atheism” and their critics in the anglophone world from the early modern period to the present

ABSTRACT

This article examines dictionaries and encyclopedias’ coverage of the term “atheism” in the anglophone world from the early modern period up until the twentieth century. The article recounts how most dictionary- and encyclopedia-makers often portrayed atheism as an irrational and immoral belief system, through their use of negative illustrative quotations or the idea of “atheism” as a denial of God. The article will also show how atheists responded to these dictionaries and encyclopedias, particularly by examining the alternative definition supplied in the middle of the nineteenth century by Charles Bradlaugh, the most important British atheist of the era.