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In this policy brief, we examine the impact of COVID-19 on sustainability initiatives in the fashion industry. We ask whether COVID-19 is likely to support the transition to a more sustainable fashion industry. In answering this question, we utilize a framework for examining sustainability along the fashion-supply chain, highlighting the opportunities and challenges for a sustainable transition with respect to design, production, retail, consumption, and end-of-life. At each step, we also consider socioeconomic dimensions with regard to social impacts, employment, and gender. In doing so, we argue that any meaningful shift toward sustainability and a just transition must recognize social and environmental challenges as interconnected, addressing structural inequalities.

Urban transformative capacities can be strengthened through the role of intermediaries, who are individuals or organisations that work between agencies and identify ways to form coalitions and broker knowledge, drive reforms across scales, and address power disparities. There is limited research to date to understand the factors that enable or limit the role of intermediaries in urban sustainability transformations. Through comparing the roles of intermediaries and their evolution in two case studies cities of urban Cambodia – Battambang and Sihanoukville – through the lens of the urban transformative capacities’ framework of Wolfram (Cities 51: 121–130, 2016), we have identified key factors that impact the effectiveness of these intermediaries. Through qualitative interviews and focus groups, we have found that long-term, place-based, and networked engagement, with political trust and support, is important, alongside the need to demonstrate results and build momentum for transformation through pilots and collaboration. Underpinning these factors are the local power dynamics and structural conditions, as well as the capabilities and attributes of the intermediary actors. Science highlights • A socio-political enabling environment is needed for intermediaries to play an active and trusted role in strengthening transformative capacities through knowledge brokering, forming coalitions, driving reforms and addressing power disparities. • The effectiveness of intermediaries in strengthening transformative capacities depends on their independent and long-term engagement, as well as their placed-based knowledge and networks that enable them to build trust and relationships. • Once intermediaries are established in a city, their successful delivery of capacity-strengthening projects can build momentum and sustain transformations .

Battambang has been identified as an exemplar for sustainability city development in Cambodia due to its success with the introduction of new programs and planning initiatives, which have led to recognition of its clean and green city status by the Cambodian Government and the Association of Southeast Asian Nations (ASEAN). Limited research has been done to date to investigate how Battambang has achieved these results, compared with other rapidly urbanising cities of Cambodia and Southeast Asia. Through the lens of urban sustainability transformations, our research identifies the capacity strengths and gaps of Battambang city in preparing for and initiating the city’s urban transformation of its waste sector, applying the transformative capacities framework of Wolfram (Cities 51:121-130, 2016). Through qualitative coding of semi-structured interviews and document analysis we found that (a) particular transformative capacities provided building blocks for the development of other capacities, (b) award and recognition processes can play a role in developing transformative capacities, and (c) that the city’s culture of innovation and relatively stable population and political-economy contributed to strengthening its capacities. This research contributes knowledge for policy and practice on urban transformative capacity strengthening, as it supports a phased ‘building blocks’ approach in resource-constrained contexts. Highlights • ‘Inclusive and open governance’ and ‘transformative leadership’ were building block capacities that enabled the initiation of Battambang’s transformation processes. • Committed and trusted intermediaries with long-term and place-based expertise played critical roles in the city’s development of these early capacities. • Capacities for experimentation and learning, and institutionalisation of a multi-stakeholder approach to governing its waste reform, were the next developed. • Organisation of Wolfram’s capacities framework into 'building blocks' more relevant in specific transformation phases – preparation, initiation, navigation and stabilisation – enables tailoring of learning and reflection to the context and phase of the city’s transformation.

Lead and zinc are used extensively in the construction and automotive industries, and require sustainable supply. In order to understand the future availability of lead and zinc, we have projected global supplies on a country-by-country basis from a detailed global assessment of mineral resources for 2013. The model GeRS-DeMo was used to create projections of lead and zinc production from ores, as well as recycling for lead. Our modelling suggests that lead and zinc production from known resources is set to peak within 15 years (lead 2025, zinc 2031). For lead, the total supply declines relatively slowly post peak due to recycling. If additional resources are found, these peaks would shift further into the future. These results suggest that lead and zinc consumers will need to plan for the future, potentially by: seeking alternative supplies (e.g., mine tailings, smelter/refinery slags); obtaining additional value from critical metals contained in lead-zinc ore deposits to counter lower grade ores; identifying potential substitutes; redesigning their products; or by contributing to the development of recycling industries.

Metal resources are essential materials for many consumer products, including vehicles and a wide array of electrical and electronic goods. These metal resources often cause adverse social and environmental impacts from their extraction, supply and disposal, and it is therefore important to increase the sustainability of their production and use. A broad range of strategies and actions to improve the sustainability of resources are increasingly being discussed within the evolving concept of the circular economy. This paper uses this lens to evaluate the opportunities and barriers to improve the sustainability of metals in consumer products in Australia, with a focus on strategies that “slow” and “narrow” material flow loops. We have drawn on Allwood’s characterisation of material efficiency strategies, as they have the potential to reduce the total demand for metals. These strategies target the distribution, sale, and use of products, which have received less research attention compared to the sustainability of mining, production, and recycling, yet it is vitally important for changing patterns of consumption in a circular economy. Specifically, we have considered the strategies of product longevity (life extension, intensity of use, repair, and resale), remanufacturing, component reuse, and using less material for the same product or service (digitisation, servicisation, and light-weighting). Within the Australian context, this paper identifies the strategies that have the greatest opportunity to increase material efficiency for metal-containing products (such as mobility, household appliances, and personal electronics), by evaluating current implementation of these strategies and identifying the material, economic, and social barriers to and opportunities for expanding these strategies. We find that many of these strategies have been successfully implemented for mobility, while applying these strategies to personal electronics remains the biggest challenge. Product longevity emerged as the strategy with the most significant opportunity for further implementation in Australia, as it is the most broadly applicable across product types and has significant potential for material efficiency benefits. The barriers to material efficiency strategies highlight the need for policies that broaden the focus beyond closing the loop to “slowing” and “narrowing” material loops.

The authors wish to make the following correction to this paper [...]

A variety of proposed activities to mitigate greenhouse gas emissions will impact on scarce water resources, which are coming under increasing pressure in many countries due to population growth and shifting weather patterns. However, the integrated analysis of water and carbon impacts has been given limited attention in greenhouse mitigation planning. In this Australian case study, we analyse a suite of 74 mitigation measures ranked as highest priority by one influential analysis, and we find that they have highly variable consequences for water quantity. We find: (1) The largest impacts result from land-based sequestration, which has the potential to intercept large quantities of water and reduce catchment yields, estimated to exceed 100 Mm³/MtCO₂-e of carbon mitigated (100,000 l per tonne CO₂-e). (2) Moderate impacts result from some renewable power options, including solar thermal power with a water cost estimated at nearly 4 Mm³/MtCO₂-e. However, the water impacts of solar thermal power facilities could be reduced by designing them to use existing power-related water supplies or to use air or salt-water cooling. (3) Wind power, biogas, solar photovoltaics, energy efficiency and operational improvements to existing power sources can reduce water demand through offsetting the water used to cool thermal power generation, with minor savings estimated at 2 Mm³/MtCO₂-e and amounting to nearly 100 Mm³ of water saved in Australia per annum in 2020. This integrated analysis significantly changes the attractiveness of some mitigation options, compared to the case where water impacts are not considered.

Drought and concern over climate change has led to the increased use of distributed water systems in Australia to supplement centralised supply systems. A literature review carried out by the Institute for Sustainable Futures (ISF) into the energy consumption of water infrastructure found that very little data on energy consumption exists, particularly for distributed systems. This paper reviews the findings of the literature review and presents results from a preliminary monitoring study on the energy implications of household rainwater systems. Typical household systems that are currently being installed in ouses cross Australia use approximately 1.5 kWh/kL.

The City of Sydney is working to realise its vision to be a GREEN, GLOBAL and CONNECTED city, a vision articulated in their strategy Sustainable Sydney 2030 by undertaking a bold and ambitious project. The project will showcase how inner suburban areas can be retrofitted with innovative water systems to achieve integrated, resilient and sustainable water cycle outcomes. The baselining process is a major step in the development of a suite of plans that constitute the Decentralised Water Master Plan, including: a Water Efficiency Plan, a Stormwater Infrastructure Improvement Plan, a Water Sensitive Urban Design Plan and a Decentralised Non-Potable Water Network Plan. Significant community consultation is being undertaken to ensure the community and stakeholders have opportunities to input into the project. The final plan will not be a fixed document but will be an evolving document to take into account changing contexts and additional data as it becomes available.

In peri-urban areas where infrastructure investments have not yet been made, there is a need to determine the most context-appropriate, fit for purpose and sustainable sanitation solutions. Decision makers must identify the optimal system scale (on the spectrum from centralized to community to cluster scale) and assess the long-term costs and socio-economic/environmental impacts associated with different options. Addressing both cost-effectiveness and sustainability are essential to ensure that institutions and communities are able to continue to bear the costs and management burden of infrastructure operation, maintenance and asset replacement. This paper describes an approach to sanitation planning currently being undertaken as a research study in Can Tho City in southern Vietnam, by the Institute for Sustainable Futures and Can Tho University in collaboration with Can Tho Water Supply and Sewerage Company. The aim of the study is to facilitate selection of the most context-appropriate, fit for purpose, cost effective and sustainable sanitation infrastructure solution. As such, the study compares a range of sanitation alternatives including centralized, decentralized (at household or cluster scale) and resource recovery options. This paper provides an overview of the study and considers aspects of the Can Tho and Vietnamese regulatory, development and institutional context that present drivers and challenges for comparison of options and selection of fit for purpose sanitation systems.