Housing agencies must prioritize physical inspections across tens of thousands of subsidized properties while lacking systematic condition data for most. We demonstrate that Graph Attention Networks (GATs) can propagate distress signals from inspected to uninspected properties through ownership and spatial networks, substantially improving screening efficiency over conventional approaches. Ownership connections add predictive value beyond geographic proximity. Removing them lowers performance, and properties linked to owners with distressed properties elsewhere face elevated predicted risk, even within the same neighborhoods. This finding is consistent with theoretical claims that maintenance outcomes cluster at the portfolio level rather than merely reflecting neighborhood poverty. Cross-program validation also exposes important limitations. In a separate feature-based experiment, an XGBoost model trained on federally inspected Section 8 properties achieved near-random performance when applied to the available Low-Income Housing Tax Credit sample, with an AUC of 0.515. Because this experiment did not directly evaluate the GAT, it does not determine whether graph-based representations would improve cross-program transfer. The result nevertheless cautions against applying models trained on U.S. Department of Housing and Urban Development-inspected properties to other program contexts without program-specific validation. Integrating predictions with economic pressure measures, we identify properties facing compounded threats, including simultaneous physical distress, market exit pressure, contract expiration, and advanced age. These properties concentrate geographically, creating opportunities for targeted intervention. We contribute methodologically by demonstrating what graph neural networks can accomplish within an administratively coherent setting while identifying important limits to cross-program transfer across fragmented housing policy landscapes.

Geographical indications (GIs) have increasingly been conceptualised within international intellectual property law as development-oriented instruments associated with rural development, cultural heritage preservation, and improved market access, particularly in the Global South. This review essay examines how this developmental rationale is articulated and critically assessed in three recent contributions to GI scholarship. It argues that these works collectively challenge the assumption that legal recognition of GIs is sufficient to generate equitable economic outcomes. Instead, they show that GI regimes operate as institutionally mediated and politically contingent governance frameworks, whose distributive effects depend on regulatory capacity, producer organisation, and market structures. Drawing on comparative perspectives from Asia and Africa, the essay situates GI protection within broader debates on legal transplantation, development governance, and distributive justice in the Global South.

In this article, I study non-material harm in cases of environmental liability. Environmental tragedy does not only come at great economic cost but often also brings about non-material loss – that is, loss that has no market value. In order to better recognize, assess, and measure this type of harm, more insight is needed into its psychological conception and parameters. Departing from the available legal frameworks on non-material harm in Belgium as well as in the Netherlands, I study how environmental psychology can help in recognizing, assessing, and measuring environmental non-material harm. More specifically, I focus on solastalgia, a notion that describes the psychological impact of negatively perceived changes to a familiar environment. Solastalgia describes a crisis of identity as a result of a disturbance in the way in which humans inhabit their environment. It describes a form of ecological grief over the loss of a familiar place – that is, the aggregate meanings, values, familiarity, and predictability attached to a specific environment. Using the available theoretical framework around solastalgia and the available empirical insights in the solastalgia literature, I show that solastalgia qualifies as a valid type of harm and bears significant advantages when implemented in environmental tort law frameworks.

Digital Twinning (DT) has become a main instrument for Industry 4.0 and the digital transformation of manufacturing and industrial processes. In this statement paper, we elaborate on the potential of DT as a valuable tool in support of the management of intelligent infrastructures throughout all stages of their life cycle. We highlight the associated needs, opportunities, and challenges and discuss the needs from both the research and applied perspectives. We elucidate the transformative impact of digital twin applications for strategic decision-making, discussing its potential for situation awareness, as well as enhancement of system resilience, with a particular focus on applications that necessitate efficient, and often real-time, or near real-time, diagnostic and prognostic processes. In doing so, we elaborate on the separate classes of DT, ranging from simple images of a system, all the way to interactive replicas that are continually updated to reflect a monitored system at hand. We root our approach in the adoption of hybrid modeling as a seminal tool for facilitating twinning applications. Hybrid modeling refers to the synergistic use of data with models that carry engineering or empirical intuition on the system behavior. We postulate that modern infrastructures can be viewed as cyber-physical systems comprising, on the one hand, an array of heterogeneous data of diversified granularity and, on the other, a model (analytical, numerical, or other) that carries information on the system behavior. We therefore propose hybrid digital twins (HDT) as the main enabler of smart and resilient infrastructures.

Based on four years of fieldwork, including 339 interviews across 21 cities, this paper provides the first-ever ethnographic account of the political economy behind the transition from traditional taxis to Didi-style ride-hailing in China. This paper makes two contributions to the literature. First, it investigates how the seemingly disadvantaged stakeholders of an old economy resisted the progress of the platform economy and why the different levels of the Chinese government, which are not subject to Western democratic accountability regimes, respond to the resistance. Second, it demonstrates the sophisticated and various approaches the Chinese government has taken in balancing the interests of the old taxi industry and the interests of the new economy. The Chinese government’s holistic approach in seeking a balance across different industries and achieving multiple goals at the same time differs from our conventional way of considering regulating online ride-hailing as an issue of compensation between the government and taxi license holders or an issue of legalization between the government and platforms such as Didi or Uber.

This article examines the challenges Indigenous communities face in safeguarding their intangible cultural heritage (ICH) in the digital age, using two case studies. Referring to the Te Hiku Media case, it analyzes the threat of data colonialism posed by corporate digitization projects. The article argues that existing legal frameworks provide limited protection for Indigenous ICH, prompting Indigenous communities to develop the innovative theory of Indigenous data sovereignty (ID-SOV). The Government of Nunavut–Microsoft partnership case highlights the benefits and drawbacks of public–private partnerships (PPPs) for Indigenous ICH. Key takeaways from both cases’ analysis lead to our proposal of integrating ID-SOV principles into PPPs to limit data colonialism risks and improve the sustainability of Indigenous ICH digitization projects. The article contends that implementing ID-SOV principles by design and by default in PPPs can empower Indigenous communities while leveraging the oversight of public actors and resources of private partners to safeguard Indigenous ICH through digital tools.

Cities around the world are facing a global housing crisis characterized by rising unaffordability, slums, gentrification, inequality, and urban segregation. The Global Financial Crisis highlighted the detrimental impact of highly financialized housing markets. This Article argues that transitioning from a market-based to a welfare-oriented approach is both necessary and feasible to ensure the right to adequate housing for everyone. This shift requires a fundamental re-imagining of housing issues, recognizing that the root causes lie in a political economy where law plays a pivotal role, crossing traditional boundaries between private and public law. We illustrate the legal foundations of adopting a welfare-based approach to the political economy of housing law, contrasting it with a market-based approach in three key areas: Land use regulation, housing finance, and rental markets.

In the face of ongoing disruptions to the multilateral trade regime, from deadlock at the WTO to the rise in unilateralism, this contribution examines the role that free trade agreements (FTAs) can play in supporting the adoption of common standards for sustainable development. It does this in three moves: first, it reframes the role of FTAs from sources of obligation and mechanisms of compliance to sites of economic diplomacy where governments can shape international standards through FTA structures; second, it unpacks the relationship between regulation and standards through three case studies (dolphin-safe labelling, automotive standards, and nutrient profiling), identifying means through which FTAs can be leveraged by trade policy actors; third, it draws on these lessons to examine how FTAs can support the uptake of key new standards and quasi-standards for sustainability, in this case, the ISO Net Zero Guidelines. Finally, this contribution reflects on the implications of reappraising the development of world trade law as part of the practice of economic diplomacy.

Amidst initiatives and international agreements that call for a stronger consideration of sustainable development in international investment law, there is a need to assess whether the concept has found its way in decisions rendered by investment arbitration tribunals. References to the concept of sustainable development in investment arbitration can eventually make the adjudication of investment disputes more consistent with an increasingly important aspect of the context in which the terms of international investment agreements are embedded. Have arbitration tribunals acknowledged the relevance of the concept of sustainable development when adjudicating international investment disputes? To answer this question, this article adopts an exploratory research design and relies on a content analysis of 91 decisions that include at least one reference to the term ‘sustainable development’. It argues that the use of sustainable development by tribunals is both marginal and problematic, thus showing a strong disconnect from efforts deployed in investment policymaking and international adjudication. The article proceeds in three steps. First, it focuses on international initiatives encouraging the consideration of sustainable development in investment policymaking. Second, it briefly explores the reliance on sustainable development that has emerged in international adjudication, outside investment arbitration. Third, by analysing express references to sustainable development in international investment arbitration, it shows that these decisions demonstrate a general lack of engagement with the concept in the tribunals’ findings and a failure to fully acknowledge its integrative nature.

European cities struggle to regulate platform-mediated short-term rental services in response to local concerns over uncontrolled tourism and affordable housing. In their efforts to tame online platforms and local hosts, cities have consistently pointed to EU law as an obstacle to effective regulation and enforcement and called for solutions at EU level. To date, research has paid limited attention to the precise role of EU law in the regulatory responses to the growth of short-term renting. This article therefore offers an explanation of how EU internal market law structures the multi-level dynamics behind short-rental regulation. Methodologically, the article relies on a contextual analysis of the EU’s legal framework for (electronic) services and an in-depth, longitudinal case study of the City of Amsterdam’s efforts to regulate its Airbnb-driven short-term rental market (2013–2023). Comprehensive empirical evidence indicates that European e-commerce law can deter governments from enforcing platform cooperation in the upstream market and, instead, prompt them to shift the burden of regulation and compliance to the ‘actual’ service providers (the hosts) in the downstream market. These upstream/downstream dynamics also help to explain the successful adoption and normative content of the recent Short-Term Rental Regulation. With its focus on the power struggle between cities and platform actors in the EU internal market, the article also offers a unique, empirically grounded account of how EU law structures urban conflicts over housing and tourism in the context of platformisation and how platformisation might affect the dynamics of European market integration more generally.

Large-scale investment projects often involve contestation over competing notions of ‘development’—from promises of economic growth and integration into global value chains to perspectives that emphasise strong connections between people, territory, culture and way of life. This contestation also echoes diverse theories that have variously conceptualised development as growth, freedom, right or sustainability. This article argues that, in the face of such diversity and complexity, the notion of development that underpins international investment law tends to prioritise economic considerations. In the context of investment disputes, this can marginalise the ideas of development advanced by local actors and indigenous peoples. By connecting human rights and development in immediate terms, ongoing discussions about the right to development can provide an arena to centre ‘peoples’ as the key actor in development processes. But this normative shift would also require ensuring that the wider frameworks of international economic law recognise and provide space for plural notions of development.

Trade and sustainable development (TSD) chapters in international trade agreements include labour provisions with a view to prevent a “race to the bottom” and reaffirm the existing international labour commitments. When properly formulated and implemented, these provisions could have positive normative impacts on the international and domestic rule of law. This article provides a critical analysis of the evolution of labour standards in international trade agreements, particularly focusing on the European Union’s (EU) approach, in comparison with the approach in the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP). More specifically, it considers ways in which trade agreements contribute to the improvement of labour standards in domestic legal systems. While EU trade agreements embrace minimum standards under international labour law rather than higher standards that apply in the EU legal order, the article argues that there is at least a normative shift towards a more efficient implementation of labour rights through EU agreements, which could make a limited contribution to the rule of law.

Although the awareness of the environmental damage caused by plastic pollution has recently increased, few steps have been taken to confront its consequences. These consequences are often most severe in the Global South where countries often lack proper waste management infrastructure. Unless the market value of plastic waste increases, it will simply be discarded, eventually making its way to the environment. It has been established that polyolefin plastic can be converted to a sulfur-free fuel oil by pyrolysis, suitable for use in diesel engines or as a clean cooking fuel. However, carrying out this chemistry in the Global South is challenging. Any process intended for use in the Global South must be safe, robust, efficient, simple to operate, low cost, and most importantly profitable for the operator. When the average daily wage in sub-Saharan Africa is less than 3 USD, an income provided from plastic waste fuel can be significant. The research presented herein focuses on the optimization of a plastic-to-fuel processor that can be built using the principles of appropriate technology. The results of this optimization and profitability assessment will be described. This research has been conducted in collaboration with the NGOs Empowered Solutions for Environmental Sustainability and UpCycle Africa.

Coastal marine environments are subject to a variety of anthropogenic pressures that can negatively impact habitats and the biodiversity they harbor. Conservation actions such as marine protected areas, marine reserves, and other effective area-based conservation measures, are pivotal tools for protecting coastal biodiversity. However, to be effective, conservation area networks must be planned through a systematic conservation planning (SCP) approach. Recently, such approaches have begun to orient their goals toward the conservation of different biodiversity facets and to integrate different types of data. In this review, we illustrate how genetic data and molecular techniques can bring useful knowledge for SCP approaches that are both more comprehensive (sampling the full range of biodiversity) and more adequate (ensuring the long-term persistence of biodiversity). With an emphasis on coastal organisms and habitats, we focus on phylogenetic analysis, the estimation of neutral and adaptive intraspecific genetic diversity at different spatial levels (alpha, beta, and gamma), the study of connectivity and dispersal, and the information obtainable from environmental DNA techniques. For each of these applications, we discuss the benefits of its integration into SCP for coastal systems, its strengths and weaknesses, and the aspects yet to be developed.

Data have played a role in urban mobility policy planning for decades, especially in forecasting demand, but much less in policy evaluations and assessments. The surge in availability and openness of (big) data in the last decade seems to provide new opportunities to meet demand for evidence-based policymaking. This paper reviews how different types of data are employed in assessments published in academic journals by analyzing 74 cases. Our review finds that (a) academic literature has currently provided limited insight in new data developments in policy practice; (b) research shows that the new types of big data provide new opportunities for evidence-based policy-making; however, (c) they cannot replace traditional data usage (surveys and statistics). Instead, combining big data with survey and Geographic Information System data in ex-ante assessments, as well as in developing decision support tools, is found to be the most effective. This could help policymakers not only to get much more insight from policy assessments, but also to help avoid the limitations of one certain type of data. Finally, current research projects are rather data supply-driven. Future research should engage with policy practitioners to reveal best practices, constraints, and potential of more demand-driven data use in mobility policy assessments in practice.

This article discusses the technology of city digital twins (CDTs) and its potential applications in the policymaking context. The article analyzes the history of the development of the concept of digital twins and how it is now being adopted on a city-scale. One of the most advanced projects in the field—Virtual Singapore—is discussed in detail to determine the scope of its potential domains of application and highlight challenges associated with it. Concerns related to data privacy, availability, and its applicability for predictive simulations are analyzed, and potential usage of synthetic data is proposed as a way to address these challenges. The authors argue that despite the abundance of urban data, the historical data are not always applicable for predictions about the events for which there does not exist any data, as well as discuss the potential privacy challenges of the usage of micro-level individual mobility data in CDTs. A task-based approach to urban mobility data generation is proposed in the last section of the article. This approach suggests that city authorities can establish services responsible for asking people to conduct certain activities in an urban environment in order to create data for possible policy interventions for which there does not exist useful historical data. This approach can help in addressing the challenges associated with the availability of data without raising privacy concerns, as the data generated through this approach will not represent any real individual in society.