Panoramic accounts of long-term socio-political change tend to marginalize the role of animals. Taking a materialist stance, we re-evaluate the ways livestock shaped the emergence of the tributary mode of production out of a kinship-ordered mode of production. This explicitly Marxist analytical framework foregrounds the interplay between value, wealth, and labour, while attending to the economic specificities of livestock that make it particularly dynamic. Drawing on ethnohistorical data, we identify wealth in livestock as heritable, expandable, flexible, and convertible, while inherently unstable. We offer the first synthesis tying these qualities together and present a holistic picture of how these qualities can catalyse the class formation by promoting differential accumulation of wealth, economic growth, and direct appropriation of value from producers. These dynamics offer an animal-centric explanatory lens to view the long-term trajectory of northern Mesopotamia from the Neolithic through the Late Chalcolithic (9700-3500 BCE), where caprines, cattle, and pigs were central to the development of urbanism and states. While our analysis is specific to the social formations, species, and human-animal relations in northern Mesopotamia, the framework we present can be applied to contexts globally to better understand the animal side of political economic dynamics of early complex societies.

This paper introduces Setting-Driven Design (SDD) and supporting tool – the Behaviour Setting Canvas (BSC) – which together address a critical gap in behavioural design by shifting the focus from individual behaviour to the broader context in which behaviour occurs. Rooted in behaviour setting theory, SDD is a powerful approach to behavioural design that offers an end-to-end structure for understanding and intervening in a behavioural design challenge. The process comprises three iterative phases: scoping the behavioural challenge, understanding the setting and intervention development. The process structure revolves around the BSC, a tool for mapping key contextual elements such as roles, motives, norms and routines. While SDD is particularly effective for behaviour change interventions, its utility extends to other design challenges, including introducing new products, shifting social norms and enhancing existing systems where behaviour remains constant. The approach integrates a theory of change to guide intervention development, prototyping and evaluation, ensuring alignment with behavioural objectives and contextual realities. A case study on handwashing in low-income Tanzanian households illustrates the method’s utility, culminating in the creation of Tab Soap, a single-use, biodegradable soap designed to improve hygiene behaviours. The study demonstrates how SDD facilitates insight generation and iterative refinement and complements user-centred design. SDD advances behavioural design by combining theoretical rigour with practical application, offering a scalable and adaptable framework for addressing complex design challenges across diverse fields.

This study examines the transformation of environmental public interest lawyering in China within an ever-tightening legal order, where activists confront both state suppression and co-optation. Utilizing qualitative methods, including in-depth interviews with 49 environmental lawyers and activists, participant observations, and online ethnography, the research delineates two divergent models of legal mobilization. The conventional model prioritizes compliance with state regulations, employing impact litigation and consensus-building with state institutions to drive incremental environmental reforms, often at the cost of aligning with state priorities. In contrast, guerrilla lawyering emerges as an innovative strategy, leveraging decentralized networks, experimentalist litigation, flexible funding, and diffused media tactics to sustain activism while preserving autonomy. By transforming courts into platforms for generating critical information and exposing systemic vulnerabilities, guerrilla lawyering resists assimilation into state-controlled schemes. This approach not only ensures movement survival amidst repression but also enriches theoretical understandings of legal mobilization under authoritarianism by addressing the understudied risk of co-optation. These findings illuminate the resilience and ingenuity of activists in China’s constrained environmental advocacy landscape and offer a transferable framework for resistance for social movements in other authoritarian contexts, amid the global rise of authoritarian legality.

We characterize all algebraic numbers $\alpha $ of degree $d\in \{4,5,6,7\}$ for which there exist four distinct algebraic conjugates $\alpha _1$, $\alpha _2$, $\alpha _3$, and $\alpha _4$ of $\alpha $ satisfying the relation $\alpha _{1}+\alpha _{2}=\alpha _{3}+\alpha _{4}$. In particular, we prove that an algebraic number $\alpha $ of degree 6 satisfies this relation with $\alpha _{1}+\alpha _{2}\notin \mathbb {Q}$ if and only if $\alpha $ is the sum of a quadratic and a cubic algebraic number. Moreover, we describe all possible Galois groups of the normal closure of $\mathbb {Q}(\alpha )$ for such algebraic numbers $\alpha $. We also consider similar relations $\alpha _{1}+\alpha _{2}+\alpha _{3}+\alpha _{4}=0$ and $\alpha _{1}+\alpha _{2}+\alpha _{3}=\alpha _{4}$ for algebraic numbers of degree up to 7.

In 1967, the World Meteorological Organisation and the International Council of Scientific Unions launched the Global Atmospheric Research Program (GARP), which lasted until 1982. The primary goals of the programme were international cooperation in global atmospheric observation to improve weather forecasting and to study climatic changes. This article examines the development phase of GARP from approximately 1961 to 1967, focusing on the US meteorologists Jule Charney and Thomas Malone and the Swedish meteorologist Bert Bolin, who contributed to its organization. It shows a variety of relationships between science and politics, beginning with President John F. Kennedy’s call for scientific cooperation to ease international political tensions, followed by the diverse efforts of Charney, Malone, Bolin and others to help secure political support, and finally the protracted negotiations within the International Council of Scientific Unions to shape and organize the Global Atmospheric Research Program.

The capacity to relate a signal to an arbitrary, specific and generally understood meaning—symbolism—is an integral feature of human language. Here, we explore two aspects of knapping technology at the Acheulean site of Boxgrove that may suggest symbolic communication. Tranchet tips are a difficult handaxe form to create, but are unusually prevalent at Boxgrove. We use geometric morphometrics to show that despite tranchet flaking increasing planform irregularity, handaxes with tranchet tips have more standardized 3D shapes than those without. This challenging standardization suggests tranchet tips at Boxgrove were part of a normative prescription for a particular handaxe form. Boxgrove presents some of the thinnest handaxes in the Acheulean world. To replicate such thin bifaces involves the technique of turning-the-edge. Since this technique is visually and causally opaque it may not be possible to learn through observation or even pointing, instead requiring arbitrary referents to teach naïve knappers. We use scar ordering on handaxes to show a variety of instances of turning-the-edge in different depositional units at Boxgrove, indicating it was socially transmitted to multiple knappers. The presence of societally understood norms, coupled with a technique that requires specific referents to teach its salient features, suggests symbolism was a feature of hominin communication at Boxgrove 480,000 years ago.