People often predict that they, and others, will be biased by sunk costs—they think that investing in an object or goal increases how much one values or wants it. In this article, we use sunk cost predictions to look at people’s theory of mind and their conceptions of mental life. More specifically, we ask which mental states and motivations are seen as underlying the bias. To investigate this, participants in two preregistered experiments predicted whether different kinds of agents would be biased by sunk costs, and also assessed the agents’ mental abilities. Participants predicted that some kinds of agents (e.g., human adults and children, robots) would show the sunk cost bias and that others would not (e.g., raccoons and human babies). These predictions were strongly related to the participants’ assessments of whether the different kinds of agents are capable of seeing actions as wasteful, but also related to their assessments of the agents’ capacities to feel regret and frustration.

Legal scholarship in the realm of international economic law has a blind spot: the practice of international trade. Cargo and container shipping is the blood and guts of international trade, and it is fuelled by bunker oil – a hydrocarbon mixture of the dirtiest petroleum-based products. Worryingly, there is empirical evidence of bunkers being intentionally contaminated with waste oils. This fraudulent contamination violates numerous international, national, and EU rules on waste management and poses immense risks to the health of planet and people alike. These same acts of fraud are also extremely profitable, and they facilitate the smooth functioning of our global economy. The fraud is itself not just incentivised in the tight-margins reality of international trade, but it is facilitated by the lack of proper legislation and the vulnerability of the existing means of enforcement in the areas where there is legislation to comply with. Economic operators often use falsified documents to market fuel oil that should be considered as waste. Systematic wrongdoing of this kind is detrimental to the environment and risks eroding the rule of law in both its formal and substantive conceptualisations.

Legal rules aimed at compensation for the harm caused by a particular state, individual, or legal entity (for example, oil pollution of the sea due to a tanker accident) are well studied and constantly used in scientific literature and international law practice. Meanwhile, every year, the number of cases of harm when the particular guilty party cannot be established grows; this is why it is almost impossible to compensate for the harm caused. Such cases include collisions of satellites causing space debris; the consequences of climate change for agriculture, forestry, and the health of citizens; and the pollution of the World Ocean with plastic debris, ballast water, and abandoned nets.

There are more such cases at the national level. After studying acts of international environmental law, national legislation, and several examples from judicial practice, we show that compensation for the harm caused to life, health, or property in the absence of a particular harm-doer is difficult or impossible to prove. This is why actions that can prevent subjectless environmental harm are taken at the national level in certain countries by developing measures to mitigate and adapt to climate change, licensing space activities, and taking preventive measures against the formation of plastic debris and its pollution of the seas, etc. This trend should be continued, and the experience gained by certain states should be used in developing new acts of international environmental law. This will ensure the next step towards preventing environmental harm where it is impossible to establish the doer’s name.

Zeolites and other open framework materials provide a powerful tool for remediation and solidification of a range of cationic wastes (e.g.${\text{NH}}_4^{+}$${\rm{NH}}_4^ + $, Pb2+) due to the combined properties of large surface area and cation exchange capacity. However, practical barriers exist to the continued expansion of their use, including handling issues related to the fine particle size, and continued ion exchange following waste adsorption. This study examines the synthesis and characterization of zeolites adhered to a muscovite mica wafer, in order to assess if practical benefit can be derived from the preparation of layered composite materials. The paper demonstrates that increased metal adsorption, as demonstrated by surface chemical composition, can be induced in regions by growth of zeolite on and within the lamellar structure of the matrix. X-ray diffraction studies suggest that a site-specific crystallization mechanism controls the zeolite type and extent of growth, thereby reducing control over the zeolites prepared. However, although increased adsorption has been introduced to the mica, the amount of zeolite added is small (<50 mg per gram of muscovite), and thus any adsorption is very limited.

The excavation of a palaeochannel at the Vistre de la Fontaine 2-2 archaeological site, 3 km downstream from the ancient city of Nîmes (southeastern France), provided an accumulation sequence covering the last 2,500 years. Trace metal analyses of these alluvial sediments disclosed lead (Pb) contamination during the Early Roman Empire, with concentrations close to 1,000 ppm, a factor of 100 above the local geochemical background. This excess of Pb shows a uniform isotopic signature that may reflect unchanged ore sources, perhaps from the Massif Central or from Great Britain. The Pb peak accompanied visible waste that was transported in the sediments of the Vistre de la Fontaine at the time of the development of the Nîmes urban water supply and drainage network during the Early Roman Empire. This research shows the bimillennial persistence of palaeo-contamination in a peri-urban alluvial plain and the relevance of fluvial sedimentary archives in documenting ancient waste.

Rapid urbanization in 21st-century China has been fraught with contested demolition, overdevelopment and shoddy infrastructure with short lifespans. By viewing this infrastructure as having “high metabolism” and examining the urban scrap trade that is fuelled by its material outputs, this article challenges a common assumption that such a form of urbanization is merely wasteful and problematic. Crucially, such urbanization also puts rural migrants and scrap into motion in a way that helps to reproduce its form. This occurs by generating socio-material nodes of scrap trading wherein migrants make the most of temporarily stable situations with entrepreneurialism. The nodes are spaces of “suspension” shaped by challenges including cheap rental housing that is often targeted for demolition and frequent harassment from the authorities. However, the challenges do not prevent scrap traders from caring for kin, attending to human sentiments and sometimes achieving social mobility.

Reification of ‘community’ and community engagement by professional curators of material culture has recently been critiqued in ways which highlight the diversity of cultural identities and priorities among the general public. When not acting as coherent local communities under professional supervision, people are otherwise curating culture in public space within frameworks of spiritual and creative expression, place significance and identity. Employing primarily secondary sources, I address recent outdoor public curation practices in the West, and consider such deposits in relation to cultural-heritage management, a perspective in which they have hitherto been little addressed. Although these practices typically use accumulations of themed objects to achieve visibility and audience, I conclude that they are ultimately more focused on the individual than on the community, with linkages within and between them highly digitally enabled. Apparently intensified by the effects of recent COVID-19 travel lockdowns, the practices are also linked by their typical colonization of transit spaces (thereby accessing audiences who are also expected participants), by their conscious ephemerality (with deliberate innocence about end destinations of the objects used), and by their use of mundane consumer artefacts. All these features pose challenges to their management, and curated deposits are often contested or removed by official curators or managers of public space, even as the same entities appropriate similar tropes to engage customers. With resurgent interest in tangible culture and physical place following pandemic-era overloading in the virtual domain, with travel habits potentially using different routes, at altered times, and with use of social media continuing to grow, such activities may see increased participation. This analysis suggests that imaginative proactive official treatment of these curations (e.g. by municipal authorities, heritage site curators, rangers or other property owners/managers) could avoid conflict with creators and also help reduce enduring public ‘innocence’ about the disposability of consumer objects. Treatment could involve encouraging ongoing adaptation (digitally recorded and disseminated) of the curated objects in situ by their transitory public audiences.

Livestock plays a crucial role in food and nutrition security. However, livestock production accounts for 0.18 of global greenhouse gas emissions. India has one of the highest livestock densities globally, mainly produced under traditional systems. Specifically, the emission and particularly nitrogen losses from cattle in traditional systems cannot be ignored. Nitrogen emission is substantial when cattle roam free and waste is not collected or managed efficiently. This paper reviews the literature to piece together the available information on nitrogen emissions from cattle in India to synthesize the evidence, identify gaps and contribute to further understanding of the problem. At the same time, the paper highlights the solutions to reduce nitrogen pollution from cattle production in India. The main findings are that most cattle in India are not reared to provide meat protein. The implication is that reactive nitrogen per capita consumption is lower than most developed countries. However, there are substantial inefficiencies in feed conversion, feed nitrogen use and manure management in India. As a result, nitrogen losses and wastage are considerable in the different production systems. Furthermore, the review suggests that social, cultural and economic factors such as convergent social behaviour, urbanization, regulations, changing consumption patterns, the demand for cheap fuel sources, culture and religion influence the production systems and, consequently, the emissions from livestock. Suggested solutions to reduce nitrogen pollution from cattle production in India are improving livestock productivity, adopting better feeding, manure and pasture management practices and using behavioural nudges.

Antiquity—the past—has been fundamental to archaeology from the very beginnings of the discipline, and it remains the central concept around which archaeological research is developed. Over the years, however, alternative ways of doing and thinking archaeology have come forth to challenge this orientation on the past. Despite their growth in scope and sophistication, these alternatives remain at the margins of our community. In this article, the authors argue that it is in the best interests of archaeology—both as a community and as a discipline—to not brush aside these alternatives but rather to afford them serious attention.