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Search Results (305)

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38 pages, 28889 KiB  
Article
Holding Sustainability Promises in Politics: Trends in Ecosystem and Resource Management in Electoral Party Manifestos
by Gonçalo Rodrigues Brás, Ana Isabel Lillebø and Helena Vieira
Sustainability 2025, 17(15), 6749; https://doi.org/10.3390/su17156749 - 24 Jul 2025
Viewed by 334
Abstract
Achieving Sustainable Development Goals (SDGs) remains a critical global challenge. This study analyses the environmental priorities related to SDGs 12, 14, and 15—interlinked and focused on responsible production and consumption, life below water, and life on land respectively—reflected in political party manifestos from [...] Read more.
Achieving Sustainable Development Goals (SDGs) remains a critical global challenge. This study analyses the environmental priorities related to SDGs 12, 14, and 15—interlinked and focused on responsible production and consumption, life below water, and life on land respectively—reflected in political party manifestos from the 2019, 2022, and 2024 Portuguese general elections, assessing their alignment with the SDGs and broader European political ideologies. A content analysis reveals significant disparities in attention across these goals, with SDG 15 receiving greater prominence than SDGs 12 and 14. Findings highlight the influence of political ideology, showing left-wing parties emphasize all three SDGs more consistently than their right-wing counterparts. These results underscore the need for a more balanced and comprehensive political commitment to sustainability. By exploring the interplay between national and European political agendas, this research provides valuable insights for aligning environmental policies with the UN 2030 Agenda and fostering transformative change in sustainability governance. Full article
(This article belongs to the Special Issue Sustainability in Environmental Policy and Green Economics)
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16 pages, 722 KiB  
Article
From Desalination to Governance: A Comparative Study of Water Reuse Strategies in Southern European Hospitality
by Eleonora Santos
Sustainability 2025, 17(15), 6725; https://doi.org/10.3390/su17156725 - 24 Jul 2025
Viewed by 224
Abstract
As climate change intensified water scarcity in Southern Europe, tourism-dependent regions such as Portugal’s Algarve faced growing pressure to adapt their water management systems. This study investigated how hotel groups in the Algarve have adopted and communicated water reuse technologies—specifically desalination and greywater [...] Read more.
As climate change intensified water scarcity in Southern Europe, tourism-dependent regions such as Portugal’s Algarve faced growing pressure to adapt their water management systems. This study investigated how hotel groups in the Algarve have adopted and communicated water reuse technologies—specifically desalination and greywater recycling—under environmental, institutional, and reputational constraints. A comparative qualitative case study was conducted involving three hotel groups—Vila Vita Parc, Pestana Group, and Vila Galé—selected through purposive sampling based on organizational capacity and technology adoption stage. The analysis was supported by a supplementary mini-case from Mallorca, Spain. Publicly accessible documents, including sustainability reports, media coverage, and policy frameworks, were thematically coded using organizational environmental behavior theory and the OECD Principles on Water Governance. The results demonstrated that (1) higher organizational capacity was associated with greater maturity in water reuse implementation; (2) communication transparency increased alongside technological advancement; and (3) early-stage adopters encountered stronger financial, regulatory, and operational barriers. These findings culminated in the development of the Maturity–Communication–Governance (MCG) Framework, which elucidates how internal resources, stakeholder signaling, and institutional alignment influence sustainable infrastructure uptake. This research offered policy recommendations to scale water reuse in tourism through financial incentives, regulatory simplification, and public–private partnerships. The study contributed to the literature on sustainable tourism and decentralized climate adaptation, aligning with UN Sustainable Development Goals 6.4, 12.6, and 13. Full article
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30 pages, 416 KiB  
Article
Foresight for Sustainable Last-Mile Delivery: A Delphi-Based Scenario Study for Smart Cities in 2030
by Ibrahim Mutambik
Sustainability 2025, 17(15), 6660; https://doi.org/10.3390/su17156660 - 22 Jul 2025
Viewed by 267
Abstract
This study aimed to investigate the future trajectories of last-mile delivery (LMD), and their implications for sustainable urban logistics and smart city planning. Through a Delphi-based scenario analysis targeting the year 2030, this research draws on inputs from a two-round Delphi study with [...] Read more.
This study aimed to investigate the future trajectories of last-mile delivery (LMD), and their implications for sustainable urban logistics and smart city planning. Through a Delphi-based scenario analysis targeting the year 2030, this research draws on inputs from a two-round Delphi study with 52 experts representing logistics, academia, and government. Four key thematic areas were explored: consumer demand and behavior, emerging delivery technologies, innovative delivery services, and regulatory frameworks. The projections were structured using fuzzy c-means clustering, and analyzed through the Technology Acceptance Model (TAM) and Innovation Diffusion Theory (IDT), supporting a systemic understanding of innovation adoption in urban logistics systems. The findings offer strategic insights for municipal planners, policymakers, logistics service providers, and e-commerce stakeholders, helping align infrastructure development and regulatory planning with the evolving needs of last-mile logistics. This approach contributes to advancing resilient, low-emission, and inclusive smart city ecosystems that align with global sustainability goals, particularly those outlined in the UN 2030 Agenda for Sustainable Development. Full article
30 pages, 517 KiB  
Article
‘They Say There’s More Equality…’: Women’s Perspectives on Progress and Setbacks in Gender Equality in Northern Iceland During Times of Crisis
by Marya Rozanova-Smith, Embla Eir Oddsdóttir and Andrey N. Petrov
Societies 2025, 15(7), 191; https://doi.org/10.3390/soc15070191 - 8 Jul 2025
Viewed by 557
Abstract
Enabling gender equality through the empowerment of women to fully participate in modern society is one of the most critical steps toward sustainable development. However, recent UN reports indicate that the impacts of the COVID-19 pandemic have jeopardized the achievement of Sustainable Development [...] Read more.
Enabling gender equality through the empowerment of women to fully participate in modern society is one of the most critical steps toward sustainable development. However, recent UN reports indicate that the impacts of the COVID-19 pandemic have jeopardized the achievement of Sustainable Development Goal 5 by 2030 in many countries worldwide, including Iceland, which has consistently been ranked as a global leader in gender equality. The main objective of this qualitative study is to examine the gendered impacts of the COVID-19 pandemic by exploring women’s lived experiences during the crisis and its aftermath across the primary domains of gender equality—personal and social. The study is based on 72 in-depth, semi-structured interviews conducted in the Northeastern Region of Iceland (Norðurland eystra) in 2022–2023, utilizing both strength-based and deficit analyses. The findings from the study indicate that, despite high government gender equality standards and support programs, as well as the considerable resilience demonstrated by women during the pandemic crisis, women in Iceland continue to encounter significant constraints to empowerment in achieving genuine gender equality within the personal and social domains. The study outcomes suggest that the further integration of a gender-responsive approach into policy development is crucial for the implementation of more comprehensive, nuanced, and locally adaptive gender equality measures. Advancing such policies will not only strengthen Iceland’s position as a global leader in gender equality but also contribute to its long-term social sustainability. Full article
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21 pages, 6342 KiB  
Article
Enhancing Transboundary Water Governance Using African Earth Observation Data Cubes in the Nile River Basin: Insights from the Grand Ethiopian Renaissance Dam and Roseries Dam
by Baradin Adisu Arebu, Esubalew Adem, Fahad Alzahrani, Nassir Alamri and Mohamed Elhag
Water 2025, 17(13), 1956; https://doi.org/10.3390/w17131956 - 30 Jun 2025
Viewed by 475
Abstract
The construction of the Grand Ethiopian Renaissance Dam (GERD) on the Blue Nile has heightened transboundary water tensions in the Nile River Basin, particularly affecting downstream Sudan and Egypt. This study leverages African Earth Observation Data Cubes, specifically Digital Earth Africa’s Water Observations [...] Read more.
The construction of the Grand Ethiopian Renaissance Dam (GERD) on the Blue Nile has heightened transboundary water tensions in the Nile River Basin, particularly affecting downstream Sudan and Egypt. This study leverages African Earth Observation Data Cubes, specifically Digital Earth Africa’s Water Observations from Space (WOfS) platform, to quantify the hydrological impacts of GERD’s three filling phases (2019–2022) on Sudan’s Roseires Dam. Using Sentinel-2 satellite data processed through the Open Data Cube framework, we analyzed water extent changes from 2018 to 2023, capturing pre- and post-filling dynamics. Results show that GERD’s water spread area increased from 80 km2 in 2019 to 528 km2 in 2022, while Roseires Dam’s water extent decreased by 9 km2 over the same period, with a notable 5 km2 loss prior to GERD’s operation (2018–2019). These changes, validated against PERSIANN-CDR rainfall data, correlate with GERD’s filling operations, alongside climatic factors like evapotranspiration and reduced rainfall. The study highlights the potential of Earth Observation (EO) technologies to support transparent, data-driven transboundary water governance. Despite the Cooperative Framework Agreement (CFA) ratified by six upstream states in 2024, mistrust persists due to Egypt and Sudan’s non-ratification. We propose enhancing the Nile Basin Initiative’s Decision Support System with EO data and AI-driven models to optimize water allocation and foster cooperative filling strategies. Benefit-sharing mechanisms, such as energy trade from GERD, could mitigate downstream losses, aligning with the CFA’s equitable utilization principles and the UN Watercourses Convention. This research underscores the critical role of EO-driven frameworks in resolving Nile Basin conflicts and achieving Sustainable Development Goal 6 for sustainable water management. Full article
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21 pages, 759 KiB  
Article
Exploring How Corporate Maturity Moderates the Value Relevance of ESG Disclosures in Sustainable Reporting: Evidence from Bangladesh’s Developing Market
by Saleh Mohammed Mashehdul Islam
Sustainability 2025, 17(13), 5936; https://doi.org/10.3390/su17135936 - 27 Jun 2025
Viewed by 526
Abstract
This study investigated how corporate maturity—measured through firm age and lifecycle stage—moderates the value relevance of Environmental, Social, and Governance (ESG) disclosures in a frontier market context, using Bangladesh as a case study. Drawing on panel data from 2011–2012 to 2023–2024 for 86 [...] Read more.
This study investigated how corporate maturity—measured through firm age and lifecycle stage—moderates the value relevance of Environmental, Social, and Governance (ESG) disclosures in a frontier market context, using Bangladesh as a case study. Drawing on panel data from 2011–2012 to 2023–2024 for 86 publicly listed non-financial firms, the study employed a modified Ohlson valuation framework, panel regression analysis, and multiple robustness techniques (2SLS, PSM). ESG disclosure was measured using a researcher-developed index aligned with international reporting standards (GRI, SASB, TCFD, UN SDGs). ESG disclosures are positively associated with firm value, but this relationship is significantly moderated by corporate maturity. Younger firms exhibit a stronger valuation effect from ESG transparency, driven by higher signaling and legitimacy needs. In contrast, mature firms experience a diminished marginal benefit, reflecting routine compliance rather than strategic differentiation. These findings challenge the uniform application of ESG assessment models and suggest the need for lifecycle-adjusted disclosure ratings, particularly in nascent regulatory environments like Bangladesh. Investors and regulators should tailor ESG evaluation criteria by firm age and industry sustainability exposure. Younger firms, often overlooked, may carry outsized ESG signaling value in emerging markets. Enhancing ESG transparency among younger firms can foster greater stakeholder trust, support inclusive growth, and strengthen social accountability in emerging economies. This study contributes to the ESG literature by introducing corporate maturity as a key moderating variable in value relevance analysis. It provides new empirical insights from a developing economy and proposes lifecycle-based adaptations to global ESG rating methodologies. Full article
(This article belongs to the Special Issue Advances in Business Model Innovation and Corporate Sustainability)
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37 pages, 2394 KiB  
Article
Hybrid Intersection: Navigating Context and Constraint in AI for Social Good Among Thailand’s Smallholder Farmers
by Putthiphan Hirunyatrakul
Sustainability 2025, 17(13), 5792; https://doi.org/10.3390/su17135792 - 24 Jun 2025
Viewed by 767
Abstract
Artificial intelligence is increasingly deployed as a vehicle for “social good” in agriculture, ostensibly advancing the UN Sustainable Development Goals whilst uplifting smallholders. This study examines how such claims materialise through a selective case study analysis of eleven Thai Agricultural AI providers, analysing [...] Read more.
Artificial intelligence is increasingly deployed as a vehicle for “social good” in agriculture, ostensibly advancing the UN Sustainable Development Goals whilst uplifting smallholders. This study examines how such claims materialise through a selective case study analysis of eleven Thai Agricultural AI providers, analysing governance practices and impact framing. The research develops the “hybrid intersection” concept as an analytical lens for understanding how Agricultural AI simultaneously delivers genuine social benefits whilst reproducing structural constraints that limit transformative change. Findings reveal that “social good” becomes operationalised primarily through economic gains, reflecting farmers’ immediate financial predicament and market-driven innovation constraints. Governance practices prioritise functional trust over procedural safeguards, reflecting institutional pressures to demonstrate immediate value. The study reveals two systemic tensions: data commodification models enabling free farmer access whilst extracting behavioural surplus for third-party monetisation, and market optimisation approaches delivering incremental improvements whilst leaving structural challenges unaddressed. Thailand’s Agricultural AI landscape thus embodies a “hybrid intersection” where genuine social good coexists with constrained transformation, providing analytical tools for understanding similar patterns in other Southern contexts. Full article
(This article belongs to the Special Issue Sustainable Development of Agricultural Systems)
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30 pages, 4703 KiB  
Article
Governance-Centred Industrial Symbiosis for Circular Economy Transitions: A Rural Forest Biomass Hub Framework Proposal
by Joel Joaquim de Santana Filho, Pedro Dinis Gaspar, Arminda do Paço and Sara M. Marcelino
Sustainability 2025, 17(12), 5659; https://doi.org/10.3390/su17125659 - 19 Jun 2025
Viewed by 387
Abstract
This study examines the establishment of a Hub for Circular Economy and Industrial Symbiosis (HUB-CEIS) centred on a forest biomass waste plant in Fundão, Portugal, presenting an innovative model for rural industrial symbiosis, circular economy governance, and sustainable waste management. Designed as a [...] Read more.
This study examines the establishment of a Hub for Circular Economy and Industrial Symbiosis (HUB-CEIS) centred on a forest biomass waste plant in Fundão, Portugal, presenting an innovative model for rural industrial symbiosis, circular economy governance, and sustainable waste management. Designed as a strategic node within a reverse supply chain, the hub facilitates the conversion of solid waste into renewable energy and high-value co-products, including green hydrogen, tailored for industrial and agricultural applications, with an estimated 120 ktCO2/year reduction and 60 direct jobs. Aligned with the United Nations (UN) Sustainable Development Goals (SDGs) and the Paris Agreement, this initiative addresses global challenges such as decarbonization, resource efficiency, and the energy transition. Employing a mixed research methodology, this study integrates a comprehensive literature review, in-depth stakeholder interviews, and comparative case study analysis to formulate a governance framework fostering regional partnerships between industry, government, and local communities. The findings highlight Fundão’s potential to become a benchmark for rural industrial symbiosis, offering a replicable model for circularity in non-urban contexts, with a projected investment of USD 60 M. Special emphasis is placed on the green hydrogen value chain, positioning it as a key enabler for regional sustainability. This research underscores the importance of cross-sectoral collaboration in achieving scalable and efficient waste recovery processes. By delivering practical insights and a robust governance structure, the study contributes to the circular economy literature, providing actionable strategies for implementing rural reverse supply chains. Beyond validating waste valorization and renewable energy production, the proposed hub establishes a blueprint for sustainable rural industrial development, promoting long-term industrial symbiosis integration. Full article
(This article belongs to the Special Issue Novel and Scalable Technologies for Sustainable Waste Management)
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26 pages, 389 KiB  
Article
From Greenwashing to Sustainability: The Mediating Effect of Green Innovation in the Agribusiness Sector on Financial Performance
by Zhongping Wang and Xiaoying Tian
Agriculture 2025, 15(12), 1316; https://doi.org/10.3390/agriculture15121316 - 19 Jun 2025
Viewed by 469
Abstract
This study analyses the impact of agricultural greenwashing on financial performance via green innovation. To this end, it employs data from Chinese A-share agribusinesses from 2012 to 2022. The study indicates the following results: (1) the practice of greenwashing (ESG disclosure–performance gap, GW) [...] Read more.
This study analyses the impact of agricultural greenwashing on financial performance via green innovation. To this end, it employs data from Chinese A-share agribusinesses from 2012 to 2022. The study indicates the following results: (1) the practice of greenwashing (ESG disclosure–performance gap, GW) has a significant negative impact on ROA, particularly in non-state firms; (2) green innovation (patents, GI) partially mediates this relationship, with a percentage of 9.09%, as GW diverts research and development resources toward image management. Robustness checks are employed to confirm the results obtained using ROE and lagged models. Property rights moderate the effects: non-state firms are more adversely affected by innovation dependency, while state firms are protected by policies. The “double-edged” mechanism elucidates GW’s short-term legitimacy gains in contrast to long-term innovation suppression and financial decline. The report calls for the establishment of standardised ESG metrics (for example, the disclosure of pesticide residue) and targeted green incentives (for example, SME R&D subsidies) to be aligned with UN SDGs 9.4 (green tech) and 12.6 (responsible production). The present study offers insights into the governance of environmental, social, and governance (ESG) matters within the context of agriculture in China. Full article
(This article belongs to the Section Agricultural Economics, Policies and Rural Management)
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36 pages, 2633 KiB  
Review
Circular Economy Transitions in Textile, Apparel, and Fashion: AI-Based Topic Modeling and Sustainable Development Goals Mapping
by Raghu Raman, Payel Das, Rimjhim Aggarwal, Rajesh Buch, Balasubramaniam Palanisamy, Tripti Basant, Urvashi Baid, Pozhamkandath Karthiayani Viswanathan, Nava Subramaniam and Prema Nedungadi
Sustainability 2025, 17(12), 5342; https://doi.org/10.3390/su17125342 - 10 Jun 2025
Viewed by 1679
Abstract
This study focuses on the shift to a circular economy (CE) in the textile, apparel, and fashion (TAF) sectors, which generate tons of waste annually. Thus, embracing CE practices is essential for contributing to UN Sustainable Development Goals. This study employs a mixed-methods [...] Read more.
This study focuses on the shift to a circular economy (CE) in the textile, apparel, and fashion (TAF) sectors, which generate tons of waste annually. Thus, embracing CE practices is essential for contributing to UN Sustainable Development Goals. This study employs a mixed-methods approach, integrating PRISMA for systematic literature selection, BERTopic modeling and AI-driven SDG mapping, and case study analysis to explore emerging CE themes, implemented circular practices, and systemic barriers. Machine-learning-based SDG mapping reveals strong linkages to SDG 9 and SDG 12, emphasizing technological advancements, industrial collaborations, and circular business models. Moderately explored SDGs, namely, SDG 8, SDG 6, and SDG 7, highlight research on labor conditions, water conservation, and clean energy integration. Reviewing 655 peer-reviewed papers, the BERTopic modeling extracted six key themes, including sustainable recycling, circular business models, and consumer engagement, whereas case studies highlighted regulatory frameworks, stakeholder collaboration, and financial incentives as critical enablers. The findings advance institutional theory by demonstrating how certifications, material standards, and regulations drive CE adoption, reinforcing SDG 12 and SDG 16. The natural resource-based view is extended by showing that technological resources alone are insufficiently aligned with SDG 9. Using the Antecedents–Decisions–Outcomes framework, this study presents a structured, AI-driven roadmap for scaling CE in the TAF industry, addressing systemic barriers, and supporting global sustainability goals, highlighting how multistakeholder collaboration, digital traceability, and inclusive governance can improve the impact of CE. The results recommend that CE strategies should be aligned with net-zero targets, carbon credit systems, and block-chain-based supply chains. Full article
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14 pages, 2017 KiB  
Article
The Simulation of Offshore Radioactive Substances Diffusion Based on MIKE21: A Case Study of Jiaozhou Bay
by Zhilin Hu, Feng Ye, Ziao Jiao, Junjun Chen and Junjun Gong
Sustainability 2025, 17(12), 5315; https://doi.org/10.3390/su17125315 - 9 Jun 2025
Viewed by 349
Abstract
Nuclear accident-derived radionuclide dispersion poses critical challenges to marine ecological sustainability and human–ocean interdependence. While existing studies focus on hydrodynamic modeling of pollutant transport, the link between nuclear safety and sustainable ocean governance remains underexplored. This study investigates radionuclide diffusion patterns in semi-enclosed [...] Read more.
Nuclear accident-derived radionuclide dispersion poses critical challenges to marine ecological sustainability and human–ocean interdependence. While existing studies focus on hydrodynamic modeling of pollutant transport, the link between nuclear safety and sustainable ocean governance remains underexplored. This study investigates radionuclide diffusion patterns in semi-enclosed bays using a high-resolution coupled hydrodynamic particle-tracking model, explicitly addressing threats to marine ecosystem stability and coastal socioeconomic resilience. Simulations revealed that tidal oscillations and topographic constraints prolong pollutant retention by 40% compared to open seas, elevating local concentration peaks by 2–3× and intensifying bioaccumulation risks in benthic organisms. These findings directly inform sustainable marine resource management: the identified high-risk zones enable targeted monitoring of fishery resources, while diffusion pathways guide coastal zoning policies to decouple economic activities from contamination hotspots. Compared to Fukushima’s open-ocean dispersion models, our framework uniquely quantifies how semi-enclosed geomorphology exacerbates localized ecological degradation, providing actionable metrics for balancing nuclear energy development with UN Sustainable Development Goals (SDGs) 14 and 3. By integrating hydrodynamic specificity with ecosystem vulnerability thresholds, this work advances science-based protocols for sustainable nuclear facility siting and marine spatial planning. Full article
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24 pages, 2758 KiB  
Review
Persistent Organic Pollutants’ Threats and Impacts on Food Safety in the Polar Regions—A Concise Review
by Dele Raheem, Marco Trovò, Constanza Carmona Mora and Clara Vassent
Pollutants 2025, 5(2), 14; https://doi.org/10.3390/pollutants5020014 - 3 Jun 2025
Viewed by 2295
Abstract
The threats posed by Persistent Organic Pollutants (POPs) impact food safety and, by implication, food security in the polar regions. POPs tend to persist in the environment and the fatty tissues of animals, thereby constituting long-term contamination. Due to the cold climate and [...] Read more.
The threats posed by Persistent Organic Pollutants (POPs) impact food safety and, by implication, food security in the polar regions. POPs tend to persist in the environment and the fatty tissues of animals, thereby constituting long-term contamination. Due to the cold climate and geography of these polar regions, they create a sink for these pollutants, which travel from their source of production and accumulate in food chains, resulting in health risks to the ecosystem, animals, and humans of the Arctic and Antarctica. In this paper, we draw attention to the threats posed by POPs and how they can lead to food insecurity, negatively affecting health due to unsafe traditional foods. A narrative synthesis methodology was employed, systematically analyzing historical data, activities, and research trends on POP contamination in polar ecosystems. We also highlight resilience promoted by Arctic governance, with a focus on how the issues of POPs became an international matter from the 1970s, with three United Nations (UN) conventions: the UN-Environment Stockholm Convention on Persistent Organic Pollutants, the UN Minamata Convention on mercury, and the UN-ECE Convention on Long-range Transboundary Air Pollution. These conventions led to the start of several monitoring activities in the polar regions, transforming the POPs into a global topic. We also consider the intertwined effect of climate change on POPs. Additionally, the human rights paradigm in relation to food security and sovereignty for polar communities is explored. Strengthening the resilience of communities in the polar regions requires recognition of these nutritious traditional foods as an aspect of cultural identity that must be safe and easily accessible. We focus on developments, improvements, the role of international cooperation, and frameworks to assist in research and regulations. Furthermore, establishing systems that engage local communities to consistently monitor POPs regularly will lead to a better understanding of these threats. Ultimately, this narrative provides a look into the past and current research of POPs and their monitoring in the polar regions. Full article
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22 pages, 3699 KiB  
Review
Occurrences and Perspectives of Natural Hydrogen Extraction: The Brazilian Context
by Vitória Felicio Dornelas, Andreas Nascimento, Diunay Zuliani Mantegazini, Electo Eduardo Silva Lora, Edson da Costa Bortoni and Mohd Amro
Energies 2025, 18(11), 2859; https://doi.org/10.3390/en18112859 - 30 May 2025
Viewed by 640
Abstract
The global energy matrix needs to undergo considerable changes to achieve the clean and affordable energy target as per the Sustainable Development Goals determined by the United Nations (UN) by 2030. Hydrogen has stood out worldwide as a potential substitute for current non-renewable [...] Read more.
The global energy matrix needs to undergo considerable changes to achieve the clean and affordable energy target as per the Sustainable Development Goals determined by the United Nations (UN) by 2030. Hydrogen has stood out worldwide as a potential substitute for current non-renewable sources. Once thought to be minor, if not non-existent, natural hydrogen is now becoming a more significant alternative that is being explored. Natural hydrogen can be obtained from subsurface rocks by the generation process of serpentinization, radiolysis, rock fracturing, or magma degassing, using extraction technology similar to that already used in the oil and gas industries. Thus, the goal of this research was to perform a consistent technical–scientific and bibliometric review of natural hydrogen, presenting the Brazilian context. The results showed that from 2017 onwards, there has been an increase in research publications related to the topic. France is the country with the most publications. In Brazil, the potential of natural hydrogen sources has been studied in states such as Goias, Tocantins, Minas Gerais, Roraima, Bahia, and Ceará. It is still difficult to predict the potential cost of natural hydrogen production. However, estimates through the Hydroma company show a cost of 0.5 USD/kg, and Australia and Spain target price projects at approximately 1 USD/kg of natural decarbonization could be aided by natural hydrogen, which could supply the world’s energy needs for generations. Geological processes, reserve behavior, and the efficiency of extraction are among the unknowns, though. Brazil requires a strong regulatory framework and additional research. For exploration to be sustainable, cooperation between the government, businesses, and society is essential. Full article
(This article belongs to the Section B: Energy and Environment)
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23 pages, 36340 KiB  
Article
Understanding Unsustainable Irrigation Practices in a Regionally Contested Large River Basin in Peninsular India Through the Lens of the Water–Energy–Food–Environment (WEFE) Nexus
by Bhawana Gupta and John S. Rowan
Water 2025, 17(11), 1644; https://doi.org/10.3390/w17111644 - 29 May 2025
Viewed by 736
Abstract
Water management is a long-standing source of dispute between the riparian states of Karnataka and Tamil Nadu. Recently, these disputes have intensified due to impacts from climate change and Bangalore’s rapid growth to megacity status. Despite well-defined national water governance instruments, competition between [...] Read more.
Water management is a long-standing source of dispute between the riparian states of Karnataka and Tamil Nadu. Recently, these disputes have intensified due to impacts from climate change and Bangalore’s rapid growth to megacity status. Despite well-defined national water governance instruments, competition between state actors and limited access to reliable hydrometric data have led to a fragmented regulatory regime, allowing unchecked exploitation of surface and groundwater resources. Meanwhile, subsidised energy for groundwater pumping incentivises the unsustainable irrigation of high-value, water-intensive crops, resulting in overextraction and harm to aquatic ecosystems. Here, we employ a water–energy–food–environment (WEFE) nexus approach to examine the socio-political, economic, and environmental factors driving unsustainable irrigation practices in the Cauvery River Basin (CRB) of Southern India. Our methodology integrates spatially explicit analysis using digitised irrigation census data, theoretical energy modelling, and crop water demand simulations to assess groundwater use patterns and energy consumption for irrigation and their links with governance and economic growth. We analyse spatio-temporal irrigation patterns across the whole basin (about 85,000 km2) and reveal the correlation between energy access and groundwater extraction. Our study highlights four key findings. First, groundwater pumping during the Rabi (short-rain) season consumes 24 times more energy than during the Kharif (long-rain) season, despite irrigating 40% less land. Second, the increasing depth of borewells, driven by falling water table levels, is a major factor in rising energy consumption. Third, energy input is highest in regions dominated by paddy cultivation. Fourth, water pumping in the Cauvery region accounts for about 16% of India’s agricultural energy use, despite covering only 4% of the country’s net irrigated area. Our study reinforces the existing literature advocating for holistic, catchment-wide planning, aligned with all UN Sustainable Development Goals. Full article
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54 pages, 4231 KiB  
Article
Environmental Social Governance (ESG) Reporting for Large US Airports
by Sarah Hubbard
Sustainability 2025, 17(11), 4832; https://doi.org/10.3390/su17114832 - 24 May 2025
Viewed by 927
Abstract
This paper provides a novel approach to airport sustainability with a comparative analysis of frameworks presented by Airports Council International (ACI) and the World Economic Forum (WEF), a case study on environmental social governance (ESG) reporting for large US airports, a historical perspective [...] Read more.
This paper provides a novel approach to airport sustainability with a comparative analysis of frameworks presented by Airports Council International (ACI) and the World Economic Forum (WEF), a case study on environmental social governance (ESG) reporting for large US airports, a historical perspective and discussion regarding legal considerations, and sustainability metrics. Airport sustainability reporting provides numerous advantages, including enhanced transparency and accountability, and it also supports risk management, regulatory compliance, operational efficiency, risk management, community engagement, and investor relations. There are 30 large hub airports in the US, and each one of these publishes information on sustainability, which may consist of a sustainability report, reports on sustainability related topics, or website information. Eight of these large US airports publish an ESG report. ESG reports are of increasing interest due to their use internationally and due to the role of ESG reports in investment decisions. This paper presents an analysis of the information contained in ESG reports published by US airports and compares the frame of reference used by airports that utilize UN Sustainable Development Goals (SDGs) in their reporting. Case studies of ESG reports for Salt Lake City and Dallas Fort Worth Airports are presented to illustrate ESG reports, and the use of the SDG identified in these reports is compared the framework identified by Airports Council International (ACI) and the World Economic Forum (WEF). The discussion of airport ESG reporting provides a thorough and contextual review of the topic and examines how this framework may evolve to address the increasing interest in ESG reporting for US airports. The information provided may be used by airports to improve their sustainability reporting. Full article
(This article belongs to the Section Sustainable Transportation)
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