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The role of cities in the transformation of society is discussed. The growing importance of cities and their global networks undermine the nation state. This is a reversal of the development of the modern state which, over several centuries, increased its control over its territory and cities. Such changes have generated renewed interest in the Middle Ages. The relations between Medieval cities and territorial states were part of complex and shifting political arrangements, involving urban networks and overlapping claims to authority over territories. The general characteristics of prospective neomedieval political systems are discussed in more detail and applied to the regulatory challenges faced by neoliberalism and the transformation to a circular economy. The shift in the focus of neoliberal policy from the competitiveness of cities to that of metropolitan regions, with diverging urban and provincial interests hampers neomedievalist coordination. The cooperation between urban and provincial interests can however be realised in the transformation from a linear to a more circular economy, where metropolitan regions are well suited to accommodate the diverging aspects and forms of territorial regulation in a neomedievalist manner.

Bio-based businesses are often considered to be sustainable. However, they are also linked to sustainability challenges such as deforestation and soil erosion. Encouraged to exploit innovative solutions and enhance sustainability, organizations engaged in bio-based activities extensively explore collaboration possibilities with external partners. The objective of this paper is to integrate the available knowledge on sustainability of inter-organisational collaborations in bio-based businesses, while considering the three aspects of sustainability: environmental, economic, and social. We collected data from three academic sources—Web of Science, Scopus, and EconLit—and conducted a systematic literature review. The results show the importance of geographical proximity and complementarity in creating sustainability benefits such as reduced emissions, reduced waste, economic synergies, and socio-economic activities. Based on the findings, we have developed a framework that illustrates sustainability benefits and challenges. Interestingly, the studies emphasize sustainability benefits more in emerging than in industrialised economies, especially relating to the social aspects of sustainability. In conclusion, although the scholars have not discussed mitigation of several sustainability challenges in bio-based businesses, such as land use conflicts, they have found evidence of vital sustainability benefits, such as energy availability, lower emissions, improved socio-economic life, and poverty reduction, which are essential in emerging economies.

It is a challenging task to manage a perishable food supply chain (PFSC), due to the product’s short lifetime and to demand uncertainty. Even worse is the fact that, because of the multitude of participating stakeholders in production, distribution, and retailing, the PFSC becomes complex and thus particularly vulnerable to crises. Product shortages that result from an outbreak like COVID-19 often cause customers to seek alternative sources of supply, possibly with a larger purchasing amount (i.e., hoarding), leading to even severer demand uncertainty after the shortage period. To manage a sustainable and resilient PFSC after an outbreak, supply chain partners need to share and use the right information to facilitate decision making. A system dynamics simulation was thus applied to study a cheese supply chain with three tiers. Three scenarios that cause product shortages were simulated. Seven balanced feedback loops and two reinforced feedback loops were identified from the simulation model. Through the feedback loop dominance analysis, we identified four dominant loops that facilitate the generation of endogenous demand. In order to alleviate the negative influence of endogenous demand, it is suggested that the information sharing that causes endogenous demand be stopped and a loosely coupled strategy to support decision making utilized.

According to the IPCC Climate Change projections by 2050 temperatures in southern Spain will have increased noticeably during the summer. Housing—in its current form—will not be able to provide a suitable response to this new climate scenario, and will in turn prompt an increase in cooling energy consumption and a series of problems relating to health and comfort. The Design Builder simulation tool was used to quantify the impact of this future climate scenario on energy demand, as well as its effect under free-running conditions on indoor temperature. Different passive conditioning strategies were evaluated to establish their influence on the indoor comfort conditions. The case study examined a theoretical single-family residential unit model in order to establish guidelines for the pre-selection of the most suitable passive solutions. The results show that passive conditioning strategies analysed (envelope treatment, solar gain protection and night-time natural ventilation) reduce energy demand and indoor temperatures, thus increasing energy efficiency and improving indoor comfort conditions. Therefore, these passive conditioning strategies reduce the cooling energy consumption.

Background: This study aims to find diets with low price and low climate impact, yet fulfilling all nutritional requirements. Methods: Optimization by linear programming. The program constrains 33 nutrients to fulfill Dutch dietary requirements. In a second cycle, the upper boundary for climate impact through greenhouse gas emissions (GHGE) is set to 1.6 kg carbon dioxide equivalents/day (CO2eq). In a third cycle, the costs are set on €2.50 as a constraint. The objective function of the optimization maximized the most consumed food products (n = 206) for male and female adults separately (age 31–50). Results: A diet of 63 popular and low priced basic products was found to deliver all required nutrients at an adequate level for both male and female adults. This plant-based, carbohydrate and fiber-rich diet consists mainly of wholegrain bread, potatoes, muesli, open-field vegetables and fruits. The climate impact of this diet is very low (1.59 kg CO2eq/day) compared to the average Dutch diet. By constraining costs, a low carbon diet of €2.59/day is possible. Conclusions: A two-person diet consisting of 63 products and costing €37 per week can simultaneously be healthy and yet have half the average climate impact. Linear programming is a promising tool to combine health and sustainability on both societal and individual levels.

Recent scholarly attention shows increasing involvement of local low-carbon energy initiatives (LLCEIs) in governance and policy, in particular in relation to innovations regarding low-carbon energy and energy efficiency. The future perspective of active citizenship in the production of locally generated low-carbon energy is largely dependent on the existing institutional and policy frameworks and settings. Subnational governments, in particular, can have a prominent role in this process by engaging in institutional adaptation and policy innovation. The central research question of this paper is: In what ways do local and regional governments innovate in governing to respond to the emergence of LLCEIs? The research question is answered by comparing two case studies: the Dutch regions of Overijssel and Fryslân. We have conceptualized a meta-governing approach of experimentation, characterizing the innovations in governing that emerge when governments respond to the emergence of LLCEIs. We specifically focus on two capacities that subnational governments can use to enhance their governing capacity vis-à-vis LLCEIs and which substantiate the experimental meta-governance mode: institutional adaptation and policy innovation. We then formulated hypotheses that specify the expected policy innovations and institutional adaptations employed vis-à-vis LLCEIs. Data collection involved in-depth interviews and use of secondary data. The results show that a balancing process of authoritative and enabling modes of governing particularly characterized the type of policy innovations that were developed and the institutional adaptations that took place. Both provinces govern LLCEIs at arm’s length and issue significant capacity-building strategies that vary in terms of their conditions. Municipalities, however, incline towards impromptu and opportunistic responses, some of them having lasting effects by patching up existing institutional settings, others having more of an episodic character. The results will further the understanding of subnational low-carbon policy and governance innovation processes vis-à-vis the role of LLCEIs.