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To effectively address the sustainability crises our planet faces, decision-makers at different levels of government worldwide will have to get a handle on three key challenges: learning from Global North and South initiatives in tandem, taking stock of social innovations alongside technological fixes, and nurturing grassroots sustainable development initiatives next to, or in place of, top-down corporate and government interventions. Current scientific literature and grant-making institutions have often reinforced the compartmentalized fashion in which we learn and draw policy lessons from North/South, social/technical, and bottom-up/top-down sustainability initiatives, including local food system innovations. The strategic levers for global sustainable development lying in-between are thus left out. This paper uses exploratory, multiple case study analysis to address this omission. By concurrently drawing lessons from grassroots innovations in Brazil, New York, and Senegal—three profoundly different socioeconomic and geographic contexts—we identify common pressure points that have enabled local communities to drive system-wide transformations toward climate adaptation, resilience, and sustainability in the agri-food system. The findings of this paper would be of value to scholars, government officials, and community groups engaged in agri-food systems sustainability and interested in the processes of change that have allowed budding innovations to stabilize and scale up.

Abstract Background The place of agriculture in the economic development process has long been the subject of much criticism. If the authors are unanimous that agriculture contributes to the development of the economy, its role in the growth of other sectors remains unclear. This research examines the contribution of agriculture, industry and services sectors to Gross Domestic Product in Economic Commission of West African States from 1975 to 2014. The study identifies the sector with a greater participation, analyses the robustness of the relationship between the three sectors and discusses the bidirectional causality relationship. Moreover, the interactions between the long-run equilibrium relationships and short-run dynamics are explored through an error correction model. Taking into account climate change, this research establishes by simulation the effect or response to a change in temperature and rainfall on the production of agricultural sector under the assumption of a positive policy integration of Economic Commission of West African States. Results The causality links between the three sectors are different among countries. Agriculture causes other sectors in some countries, while it is industry or services in other countries. The long-term equilibrium shows that the contribution of agriculture is predominant in Burkina Faso, Gambia and Nigeria. Countries such as Benin, Ghana, Mali, Niger, Senegal and Guinea have a comparative advantage in industry. The simulation confirms the benefits of a positive policy integration in agriculture sector. Indeed, in the scenario of a positive policy integration, the effect of climate change through changes in temperature and rainfall is neutral and without consequences on agriculture per capita income. Conclusion The implementation of a special program is suggested for each country group based on their comparative advantage. A program between similar countries can be a coping strategy. Positive policy integration is fundamental to reduce the harmful effect of climate change.

In the last thirty years of the twentieth century we saw a resurrection of the writings of Matlhus. In their new guise we are told that instead of war, pestilence and famine, the earth has decreasing biodiversity, loss of species, loss of natural resources and water shortages, to name but a few, to look forward too. Population growth today, as it was two hundred years ago, is portrayed as Public Enemy number one. There is little doubt that the Neo-Malthusian argument has made an impact on policy, indeed, probably moreso than did its namesake. The newly clad argument shares much with its namesake, not least, its significant faults. The argument is two hundred years old, and the inaccuracies share that age. Malthus' predictions never reigned true because he made the fundamental error of not taking account of technical progress, or the ability of human ingenuity to adapt to change. This paper looks at the evolution of both sides of the population argument, and argues that this year's World Summit in Johannesburg should not fall foul to the dangerous generalisations invoked by the Neo-Malthusian school of thought. This paper is an attempt to lay the blame for environmental degradation not on the increasing population of the Third World, but on the consumption patterns and lifestyles of the First World. Affluence consumes energy and produces waste at a far higher rate than poverty. In looking at the environmental debate only an integrated approach, and not one that is concerned solely with ‘demonising’ population growth, can result in success.

Much of New South Wales and southern Queensland suffered from extreme drought from 2017 to 2019. This study models drought and bushfires impacts using VU‐TERM, a multi‐regional, dynamic CGE model. Prolonged drought pushed national real GDP to 0.7 per cent or more below base in 2018–2019 and 2019–2020. NSW’s real GDP fell relative to forecast by 1.1 per cent or $6.9 billion in 2018–2019 and 1.6 per cent or $10.2 billion in 2019–2020. These impacts reflect a severe diminution of farm output, given that agriculture accounts for around 1.6 per cent of NSW’s income. Bushfires exacerbated 2019–2020 losses. We assume that there is a full recovery in seasonal conditions in 2020. However, prolonged drought and bushfire destruction deplete farm capital through depressed investment and diminished herd numbers. Consequently, the income earning capacity of farms in recovery remains below that of a no drought base. The net present value of the national welfare loss is $63 billion, split between $53 billion in losses from drought and $10 billion from bushfires. The latter excludes any valuation of human lives lost, flora, fauna or forestry destruction. In the longer term, adaptation and policy responses will need to reflect the expectation of increased frequency of adverse climatic events.

AbstractIncreasing resource scarcity and what has been called “the end of cheap nature” are prompting policymakers and scholars to foster more circular economies to reduce waste and lengthen the lifespan of material goods. Our essay critically examines the political and economic relationships between urban and rural geographies in the context of secondhand economies. Practices of bartering, swapping, selling, and repairing used goods have long been important to rural people and places, but the increasing commodification of discards risks upending rural livelihoods and ways of being as goods move toward urban centers. We explore the relationship between rural and urban reuse economies and suggest how future scholars of rural North America might contribute to strengthening and supporting localized reuse practices.

We are living in a new human-dominated geological epoch, the Anthropocene. Human activity is the dominant cause of most contemporary environment change. At the same time, digital transformation is changing our societies. The intersection of both processes compels us to harness the potential of new technological systems to transform how humanity manages its environmental footprint. However, our interaction with the environment is not the only interaction we have to change. New technologies can automatically monitor animal welfare. These management processes will increase stakeholder confidence and therefore the reputation of food companies. Since corporate governance is key for corporate sustainability, new monitoring processes should begin to be included in the animal welfare questionnaires. This research highlights the disruptive potential of Fourth Industrial Revolution technologies applied on farms. Like the sustainability questionnaires, the Business Benchmark on Farm Animal Welfare (BBFAW) have shortcomings. However, animal welfare indices are very useful tools to measure the performance of companies and can be easily improved by following the recommendations of this research. The importance of a formalised system of responsibilities and the advances offered by audio-visual and smart technologies, that provide real-time data, will be a key dimension for the farm of the future and therefore should be part of the BBFAW questionnaires

The ability to quickly and non-destructively monitor the cadmium (Cd) content in agricultural crops is the basic premise of effective prevention and control of Cd contamination in agricultural products. Hyperspectral technology provides a solution for this issue. The potential capability for the spectral prediction of the Cd content in the leaves of pepper and eggplant in the field was explored, and a spectral prediction model of the Cd content in these leaves was established. In this study, based on the indoor spectrum, the sensitive wavebands for predicting the Cd content in leaves were determined preliminarily by correlation analysis. Partial least squares regression (PLSR) and support vector machine regression (SVMR) were used to establish spectral prediction models, and the final sensitive wavebands were determined by the size of the model index. The results show that the SVMR model exhibited higher prediction accuracy than the PLSR model. The RPDp (relative percent different of prediction set) values of the best SVMR prediction models for the pepper leaves and the eggplant leaves were 1.82 and 1.49, respectively. The values of Rp2 (coefficient of determination of prediction set), which can quantitatively estimate the Cd content in leaves, were 0.897 (p < 0.01) and 0.726 (p < 0.01), respectively. This study demonstrated that the leaf spectra of pepper and eggplant in the field can be used to predict the Cd content in leaves, providing a reference for monitoring the Cd content in the fruits of pepper and eggplant in the future.

Despite strong interest and conflict research spanning multiple disciplines, connections between water flows and conflicts remain unclear, due to incomplete datasets on water-related conflict-cooperation events and poor understanding of socioeconomic and biophysical causes of such conflicts. The dataset on water-related conflict-cooperation events compiled in this study extends to 2019, updating previous datasets that covered only up to 2008, yielding important new insights on cooperation-conflict trends. Global and regional trends were analyzed using the new events dataset, together with changes in hydroclimatic variables and population density. The analysis revealed that water-related cooperation was far more common than conflicts across all regions, in both drier and wetter climates, indicating that abundance and lack of water can both promote cooperation. However, conflict events were more common in drier climates where water is scarcer. This cooperation-conflict balance shifted in the 2000s, with conflict events increasing, to outnumber cooperation events in 2017. The main shift occurred in Africa and Asia, where increased conflicts in Africa coincided with a prolonged period of below-average precipitation and severe drought, while the shift in Asia coincided with increased evapotranspiration caused by human activities and increased population density. Differences between regions were confirmed by event descriptions, with events in Africa relating to water access and farmer-herder conflicts, and events in Asia relating to irrigation and dam construction. These differences highlight the need for regional-scale analysis of water-related conflict-cooperation trends and pathways. With climate change and human activities expected to increase, the increasing trend in conflict events could persist, with water resources becoming a more frequent cause of future conflict. Identifying these complex cooperation-conflict changes is vital in determining future actions required to reduce conflict events and promote cooperation on water.