From Local Pollution to Planetary Boundaries: Reframing Environmental Contamination through Multi-Scale Systems Reviews

INTRODUCTION

The Anthropocene epoch denotes a transformative period in Earth’s history in which human activities have emerged as a dominant force shaping planetary systems, rivaling or exceeding natural processes in scale and intensity (Zhou et al., 2022). Industrialization, urbanization, and intensified resource extraction have profoundly altered atmospheric composition, biogeochemical cycles, land use patterns, and biodiversity. These changes have rendered environmental disturbances increasingly complex, nonlinear, and trans-scalar, such that localized human actions now propagate through interconnected Earth systems to generate regional and global consequences. In this context, environmental contamination can no longer be understood as a series of isolated incidents; rather, it represents a systemic phenomenon embedded within coupled socio-ecological systems.

Historically, scientific inquiry and environmental governance have addressed contamination primarily through localized lenses, focusing on discrete sources such as industrial effluents, mining operations, agricultural runoff, or accidental chemical spills (Lu et al., 2025). Regulatory frameworks and remediation strategies have accordingly been designed around site-specific risk assessments, emission thresholds, and jurisdictional boundaries. While these approaches have achieved notable successes in reducing acute exposures and improving local environmental quality, they often fail to account for the mobility, persistence, and cumulative effects of contaminants once released into the environment. Pollutants frequently transcend spatial and temporal boundaries via atmospheric circulation, riverine transport, ocean currents, and food webs, thereby linking local emissions to distant ecological and human health impacts (González-Pleiter et al., 2021). This disconnect between the scale of environmental management and the scale of environmental processes—commonly described as a scalar mismatch—has become increasingly apparent as global environmental change accelerates.

The limitations of localized contamination frameworks are particularly evident when viewed through the lens of planetary boundaries, a conceptual framework developed to define a safe operating space for humanity within Earth’s biophysical limits (Richardson et al., 2023). Planetary boundaries emphasize that Earth system processes operate within threshold ranges, beyond which abrupt and potentially irreversible changes may occur. Recent assessments reveal that humanity has already exceeded six of the nine proposed boundaries, including those associated with climate change, biosphere integrity, land-system change, and the proliferation of novel entities such as synthetic chemicals and plastics (Rockström et al., 2023). These transgressions highlight how cumulative local activities—each seemingly manageable in isolation—aggregate to destabilize global systems. Environmental contamination, therefore, must be reconceptualized not merely as a local or regional concern, but as a key driver of planetary-scale risk.

Against this backdrop, there is a growing need for integrative, multi-scale perspectives that explicitly connect local pollution dynamics to global Earth system thresholds. This review seeks to address this gap by synthesizing literature published between 2019 and 2025 to examine how environmental contaminants move across spatial and organizational scales, interact with biogeochemical cycles, and contribute to the transgression of planetary boundaries. By reframing contamination as a systemic, cross-scale phenomenon, this work aims to advance a more holistic understanding of environmental risk and to inform governance strategies capable of operating effectively in the Anthropocene.

Systems thinking has emerged as a critical analytical framework for reframing environmental contamination in the context of complex, interconnected Earth systems. Rather than treating environmental components as discrete or linear entities, systems thinking conceptualizes ecosystems, socio-economic structures, and technological processes as dynamic networks characterized by interdependence, nonlinearity, and feedbacks across spatial and temporal scales (Voulvoulis et al., 2022). Within such systems, contamination is not merely the result of isolated emissions but an emergent property arising from interactions among multiple drivers, including land-use change, industrial metabolism, governance structures, and consumption patterns. This perspective enables a more comprehensive understanding of how small-scale perturbations may cascade through environmental systems, producing disproportionate and sometimes irreversible outcomes at regional or global levels.

Recent syntheses in global environmental health and sustainability science increasingly advocate for systemic interventions that target underlying structures rather than symptomatic outcomes (Mahaffy et al., 2019). These reviews emphasize the importance of identifying feedback mechanisms, tipping points, and leverage points—strategic nodes within a system where targeted interventions can yield transformative change. For instance, nutrient pollution management has evolved from localized mitigation efforts toward integrated, multi-scale modeling approaches that link catchment-level nutrient loading with regional hydrological processes and global biogeochemical cycles (Strokal et al., 2019). Such models enable the anticipation of downstream effects, including coastal eutrophication and hypoxic zones, illustrating how agricultural practices in one region may influence distant marine ecosystems. Similarly, studies of urban expansion within megaregions demonstrate that localized land-use decisions, when aggregated across rapidly urbanizing landscapes, drive broader environmental impacts such as altered climate patterns, biodiversity loss, and increased resource demand (Yang et al., 2022). These examples underscore the value of systems-based approaches in capturing cross-scale linkages that conventional analytical frameworks often overlook.

Building on this systems-oriented perspective, the objectives of this review are threefold. First, it aims to synthesize thematic insights from recent literature to elucidate how environmental contamination operates and interacts across local, regional, and global scales. Second, it seeks to examine systems-based methodologies—such as integrated assessment models, network analysis, and multi-scale monitoring frameworks—that facilitate the integration of heterogeneous data and processes across scales. Third, the review identifies key challenges and opportunities associated with applying systems thinking to environmental governance, particularly in the context of achieving sustainability within the limits defined by planetary boundaries. By drawing on peer-reviewed research, this review offers a narrative intended to inform both policy development and future scientific inquiry, advocating for a shift away from fragmented, site-specific responses toward coordinated, planetary-scale strategies. Such a reframing is increasingly essential in light of compounded pressures arising from population growth, intensifying industrialization, and climate variability, all of which heighten the risk of exceeding Earth’s safe operating spaces (MacLeod et al., 2021; Zhang et al., 2024).

Local-scale environmental contamination: sources, pathways, and immediate impacts

At the local scale, environmental contamination typically arises from discrete, identifiable sources whose impacts are most immediately experienced by adjacent ecosystems and human populations. Industrial operations—including mining, smelting, manufacturing, and waste disposal—remain among the most significant contributors, releasing heavy metals, persistent organic pollutants, and volatile organic compounds (VOCs) into surrounding environments (Arp et al., 2021). Urban areas further intensify contamination through stormwater runoff, vehicular emissions, construction activities, and inadequate waste management, while agricultural systems contribute large inputs of nutrients, pesticides, and trace metals through fertilizer application and irrigation practices. These source-specific activities result in the accumulation of contaminants in soils, surface waters, groundwater, and ambient air, creating localized pollution hotspots with elevated ecological and human health risks.

Soil contamination at the local scale has received particular attention due to its direct relevance to food security and human exposure pathways. Extensive studies document elevated concentrations of cadmium, lead, and arsenic in agricultural soils adjacent to industrial zones or intensively farmed areas, where long-term inputs exceed natural background levels (Liang et al., 2024). Remediation efforts at this scale frequently emphasize in situ stabilization techniques, such as the application of mineral amendments, organic matter, or biochar, designed to reduce contaminant mobility and bioavailability rather than complete removal. Local monitoring programs consistently reveal that, despite regulatory thresholds, contaminant concentrations in many agricultural soils remain sufficiently high to facilitate uptake by crops, leading to bioaccumulation within food chains and chronic exposure risks for nearby populations (Miao et al., 2023). These findings underscore the persistence of legacy contamination and the challenges associated with managing diffuse sources at fine spatial scales.

The pathways through which contaminants are transported locally are governed by a combination of physical, chemical, and biological processes that vary across landscapes. Within watersheds, nutrient enrichment from agricultural fertilizers is mobilized through surface runoff and subsurface flow, particularly during precipitation events, resulting in elevated nitrogen and phosphorus loads in streams and lakes (Strokal et al., 2019). These inputs often trigger algal blooms, oxygen depletion, and altered trophic dynamics in receiving waters. Urban environments amplify these processes through extensive impervious surfaces that reduce infiltration and rapidly convey pollutants—including hydrocarbons, metals, and microplastics—into stormwater systems and adjacent aquatic ecosystems (Purvis et al., 2022). Recent experimental and modeling studies highlight the effectiveness of environmentally sustainable site-level interventions, such as biochar amendments and constructed wetlands, in attenuating contaminant fluxes and enhancing local retention capacity (Liang et al., 2024). Nevertheless, these pathways remain highly sensitive to climatic variability, as changes in rainfall intensity, frequency, and seasonality can significantly enhance contaminant mobilization and episodic loading events (Xiong et al., 2021).

The immediate impacts of local-scale contamination are multifaceted, encompassing both ecological degradation and substantial public health burdens. Ecologically, contaminated soils and sediments exhibit reduced microbial diversity and altered community composition, impairing essential ecosystem functions such as nutrient cycling and organic matter decomposition (Wei et al., 2019). Faunal assemblages in polluted habitats often display decreased abundance and resilience, reflecting both direct toxicity and habitat degradation. From a human health perspective, exposure to locally elevated contaminant levels has been linked to a range of adverse outcomes, including neurological impairments associated with lead and mercury, respiratory and cardiovascular effects linked to VOCs and particulate matter, and long-term carcinogenic risks from chronic exposure (Yuan et al., 2023). Recent literature emphasizes the critical importance of high-resolution, spatially explicit data in accurately characterizing these risks, as conventional monitoring approaches frequently mask fine-scale variability and underestimate localized exposure hotspots (Huang et al., 2023).

Advances in monitoring technologies have begun to address these limitations. The integration of remote sensing, geostatistical modeling, and ground-based sampling has enabled more precise assessments of contamination patterns, particularly in agricultural systems. For example, combined approaches have revealed pronounced spatial heterogeneity in heavy metal concentrations within wheat fields, allowing for targeted remediation and management strategies that are more efficient and cost-effective than uniform interventions (Miao et al., 2023). Despite the demonstrated effectiveness of local management strategies—such as source control, phytoremediation, and soil amendments—significant challenges remain when contaminants migrate beyond their points of origin (Li et al., 2020). Atmospheric transport, hydrological connectivity, and biological vectors facilitate the export of locally released pollutants to surrounding regions, contributing to broader environmental burdens and reinforcing the need to situate local-scale contamination within an explicitly multi-scale and systems-oriented framework (Cousins et al., 2019).

Scaling up: regional and transboundary pollution dynamics

As contaminants extend beyond local confines, regional scales introduce a layer of complexity characterized by transboundary interactions, where pollution flows routinely disregard geopolitical and administrative borders (Cousins et al., 2019). At this scale, environmental contamination becomes embedded within atmospheric circulation patterns, river basins, trade networks, and shared ecosystems, complicating attribution and governance. Atmospheric transport is particularly influential, enabling fine particulate matter, aerosols, and gaseous precursors to travel hundreds to thousands of kilometers from their sources. Well-documented examples include transboundary haze events in Southeast Asia, where biomass burning and land-use change in one country generate severe air quality degradation across neighboring nations (Wang et al., 2019). These events are further modulated by changes in planetary boundary layer dynamics and regional climate variability, which influence pollutant dispersion, residence time, and chemical transformation, thereby amplifying regional exposure under warming and altered meteorological regimes (Wang et al., 2019).

Hydrological connectivity similarly facilitates the regional spread of contaminants. River systems act as conduits that transport nutrients, heavy metals, pharmaceuticals, and microplastics from upstream agricultural, urban, and industrial sources to downstream lakes, deltas, and coastal zones (Strokal et al., 2019; Persson et al., 2022). Such flows create cumulative impacts across entire basins, often manifesting as eutrophication, sediment contamination, and ecosystem degradation far removed from original emission points. These processes underscore the nested nature of environmental systems, in which local-scale inputs aggregate through regional hydrological networks to produce large-scale ecological consequences.

Regional pollution dynamics are frequently amplified through interactions with broader Earth system processes and socio-economic transformations. The rapid emergence of urban megaregions provides a salient example, particularly in China, where the coalescence of metropolitan areas has intensified energy demand, land conversion, and transportation emissions, resulting in elevated air pollution levels and widespread land degradation (Yang et al., 2022). Integrated assessment and regional modeling studies demonstrate how policy decisions in fossil fuel–dependent regions shape emission trajectories and environmental quality, tightly coupling patterns of economic growth with regional pollution profiles (Liu et al., 2020). Importantly, these dynamics often exacerbate environmental inequities, as downwind or downstream communities—frequently in less economically developed regions—experience disproportionate health and ecological burdens from pollution generated elsewhere (Tian et al., 2019).

Policy responses at the regional and transboundary scales have increasingly taken the form of multilateral agreements and cooperative frameworks aimed at harmonizing standards and reducing cross-border pollution. Examples include regional air quality agreements and shared river basin management institutions; however, implementation remains uneven due to disparities in governance capacity, economic priorities, and monitoring infrastructure among participating countries (Cousins et al., 2019). Recent analyses also highlight the role of international trade in reshaping regional pollution patterns, either alleviating or intensifying transgressions of planetary boundaries. Global food and resource trade, for instance, redistributes land-use pressures, water consumption, and nutrient emissions across regions, effectively outsourcing environmental impacts from consuming to producing areas (Li et al., 2019). In Europe, comparative assessments of production- and consumption-based environmental footprints relative to planetary boundaries demonstrate that coordinated regional strategies can mitigate boundary overflows, particularly when trade, energy, and agricultural policies are aligned with sustainability objectives (Zhou et al., 2019).

Table 1. Environmental contamination across scales

Advancing the understanding of regional and transboundary pollution increasingly relies on multi-scale analytical tools capable of tracing material and emission flows across administrative and ecological units. Multi-regional input–output models, when coupled with atmospheric chemistry and hydrological models, reveal hidden interdependencies, such as the contribution of localized VOC emissions to regional ozone formation and secondary aerosol production (Liu et al., 2020; Yuan et al., 2023). The integration of geospatial data and spatially explicit indicators has further enabled the mapping of ecological environment quality across watersheds and regions, identifying key driving factors—including land-use intensity, industrial structure, and climate variability—that shape pollution patterns (Kalmar et al., 2024). Together, these approaches reinforce the necessity of regional-scale analyses as a critical bridge between local contamination processes and global planetary boundary transgressions.

Global perspectives: integrating planetary boundaries

At the global scale, environmental contamination converges with the planetary boundaries framework, where the cumulative effects of local and regional pollutant releases increasingly threaten the stability and resilience of Earth system processes (Richardson et al., 2023; Rockström et al., 2023). Planetary boundaries delineate biophysical thresholds for critical processes—including climate change, biosphere integrity, biogeochemical flows, freshwater use, and the introduction of novel entities—beyond which the risk of abrupt, nonlinear, and potentially irreversible change rises sharply. Recent global assessments indicate that multiple boundaries have already been transgressed, reflecting the systemic nature of anthropogenic pressures and the insufficiency of incremental mitigation approaches (Rockström et al., 2023). Within this context, environmental contamination functions not only as a localized stressor but also as a pervasive driver of planetary-scale risk.

Among the identified boundaries, novel entities—encompassing synthetic chemicals, plastics, and other anthropogenic materials—have emerged as particularly challenging due to their diversity, persistence, and limited reversibility once released into the environment (Rockström et al., 2023). Plastics pollution exemplifies this challenge, as its global ubiquity, resistance to degradation, and capacity for long-range transport enable interactions across nearly all planetary boundaries. Micro- and nanoplastics disrupt marine and terrestrial ecosystems, influence biogeochemical cycling, and interact synergistically with climate change, ocean acidification, and biosphere integrity, thereby amplifying systemic vulnerability (Persson et al., 2022; Stöfen-O'Brien & Ebbinghoff, 2025). Such cross-boundary interactions highlight the inadequacy of single-issue governance and reinforce the need for integrative frameworks that capture cumulative and cascading effects.

Global assessments further reveal that anthropogenic activities have intensified feedbacks among planetary boundaries, particularly between climate change and biosphere integrity (Villarrubia-Gómez et al., 2024). Rising temperatures, altered precipitation regimes, and increased extreme events modify contaminant fate and transport, while biodiversity loss reduces ecosystem capacity to buffer pollution and regulate biogeochemical cycles. Ensuring food security for a growing global population within these constraints has therefore become a central sustainability challenge. Scenario-based studies demonstrate that optimized resource use, dietary shifts, and sustainable intensification of agriculture could enable food production to remain within planetary boundaries, though such outcomes require coordinated technological, behavioral, and policy transformations (Zhang et al., 2025). Translating global boundary thresholds into actionable targets at national and subnational levels remains methodologically complex, as downscaling demands absolute sustainability metrics that account for historical responsibility, trade, and equity considerations (Rieutor et al., 2025).

The global governance of environmental contamination is further complicated by transboundary pollutants such as pesticides, persistent organic pollutants, and other recalcitrant materials whose diffuse emissions and long environmental lifetimes defy conventional containment strategies (Cousins et al., 2022; Voulvoulis et al., 2022). Climate change exacerbates these challenges by altering contaminant behavior in soil–plant–atmosphere systems, influencing volatilization, degradation rates, and bioavailability (Mahaffy et al., 2019). Existing international legal regimes often struggle to address such interacting risks, as fragmented treaties and sector-specific agreements fail to capture the integrated nature of planetary-scale threats. Consequently, scholars increasingly argue for more coherent and synergistic governance approaches capable of addressing regime interactions and cumulative impacts across environmental domains (Yang et al., 2022). Central to these efforts is the development of global monitoring networks that track the status of planetary boundaries, integrating high-frequency, real-time data with predictive modeling to anticipate emerging risks and inform timely interventions (Mahaffy et al., 2019).

Multi-scale systems approaches: methodologies and applications

Systems thinking provides a unifying foundation for analyzing environmental contamination across scales, conceptualizing pollution as an emergent property of interconnected ecological, technological, and socio-economic components (Mahaffy et al., 2019; Voulvoulis et al., 2022). By emphasizing feedbacks, nonlinearity, and cross-scale interactions, systems approaches move beyond reductionist analyses to identify leverage points where interventions can yield disproportionate benefits. In the context of global contamination challenges, such leverage points include transitions toward circular economy models, particularly for plastics and other novel entities, where redesigning material flows can substantially reduce environmental loading across multiple boundaries (Lu et al., 2025).

Methodologically, multi-scale systems analyses draw on a diverse toolkit that integrates modeling, monitoring, and data synthesis across spatial and temporal scales. Multi-scale modeling frameworks have been applied extensively to nutrient pollution, such as in Chinese river basins, where catchment-level nutrient inputs are linked to regional hydrological processes and national policy scenarios to evaluate downstream impacts and mitigation pathways (Strokal et al., 2019). Advances in remote sensing, including hyperspectral imaging, enable the estimation of contaminant concentrations across extensive agricultural landscapes by combining localized field measurements with satellite-derived indicators, thereby improving spatial resolution and scalability (Miao et al., 2023). In atmospheric studies, receptor models for VOCs facilitate source apportionment across urban, regional, and national scales, supporting targeted emission control strategies that reflect the complexity of emission sources and chemical transformations (Yuan et al., 2023).

Applications of multi-scale systems approaches extend across diverse environmental contexts (Burghate & Mundada, 2023; Ekpo et al., 2023; Belfiore et al., 2024; Sheshadri et al., 2024). In urban sustainability research, comparative multi-scale assessments evaluate environmental performance across cities, metropolitan regions, and nations, revealing structural drivers of pollution and resource inefficiency (Purvis et al., 2022). In headwater catchments, integrated monitoring and modeling strategies enable the identification of pollution sources and transport pathways, supporting more effective management of downstream water quality (Arp et al., 2021). These tools are increasingly employed in policy analysis, where systems-based evaluations assess the interactions between energy development and environmental outcomes in fossil-energy–dependent regions, illuminating trade-offs and co-benefits associated with alternative policy pathways (Yang et al., 2022).

Table 2. Systems-based methodologies for multi-scale contamination analysis

Despite their demonstrated utility, the application of multi-scale systems approaches faces persistent challenges, including data incompatibility, scale mismatches, and uncertainties associated with model validation. Harmonizing heterogeneous datasets across jurisdictions and disciplines remains a significant barrier, particularly in data-poor regions. Nevertheless, emerging opportunities are rapidly expanding analytical capacity. Advances in artificial intelligence and machine learning offer powerful tools for pattern recognition, anomaly detection, and scenario exploration within complex environmental datasets, enhancing the ability to anticipate contamination dynamics and support adaptive governance (Cousins et al., 2019). Collectively, these methodological innovations reinforce the central role of systems thinking in bridging local actions and global sustainability goals within the constraints defined by planetary boundaries.

Case studies: multi-scale analyses of specific contaminants

Case studies illuminate multi-scale reframing. Microplastics, originating locally from consumer products, scale to planetary threats, interacting with boundaries like ocean acidification (Persson et al., 2022). PFAS, dubbed "forever chemicals," persist globally, with reviews calling for boundary specifications to manage their ubiquity (Cousins et al., 2022).

Air pollution in Tianjin demonstrates source apportionment across scales, linking local emissions to regional haze (Yuan et al., 2023). In watersheds like Huashan Creek, remote sensing assesses quality drivers, from local land use to climatic influences (Kalmar et al., 2024).

These examples underscore systems interactions, where local remediation must align with global strategies to prevent boundary overshoots (González-Pleiter et al., 2021; Villarrubia-Gómez et al., 2024).

Table 3. Persistent contaminants examined through a multi-scale lens

Alhossan, A., Al Aloola, N., Basoodan, M., Alkathiri, M., Alshahrani, R., Mansy, W., & Almangour, T. A. (2024). Assessment of community pharmacy services and preparedness in Saudi Arabia during the COVID-19 pandemic: A cross-sectional study. Annals of Pharmacy Education, Safety and Public Health Advocacy, 4, 43–49. doi:10.51847/C52qAb0bZW

Alkhanova, Z. K., Abueva, S. L., Kadaeva, F. I., Dadaev, K. M., Esilaeva, A. V., & Isaev, E. B. (2023). Exploring phytotherapy as a preventive approach for ischemic stroke recurrence. Special Journal of Pharmacognosy, Phytochemistry and Biotechnology, 3, 10–14. doi:10.51847/UGwxDZUZdR

Al-Thani, H., Al-Kuwari, S., & Abdulla, M. (2023). Evaluating nurse-led interventions and symptom trajectories in head and neck cancer patients undergoing radiotherapy. Asian Journal of Current Research in Clinical Cancer, 3(2), 72–83. doi:10.51847/M9vTLVc9kC

Arp, H. P. H., Kühnel, D., Rummel, C., MacLeod, M., Potthoff, A., Reichelt, S., Rojo-Nieto, E., Schmitt-Jansen, M., Sonnenberg, J., Toorman, E., et al. (2021). Weathering plastics as a planetary boundary threat: Exposure, fate, and hazards. Environmental Science & Technology, 55(11), 7246–7255.

Awasthi, A., Bigoniya, P., & Gupta, B. (2024). Phytochemical characterization and pharmacological potential of Moringa oleifera extract. Special Journal of Pharmacognosy, Phytochemistry and Biotechnology, 4, 1–8. doi:10.51847/VEJJO91vAT

Belfiore, C. I., Galofaro, V., Cotroneo, D., Lopis, A., Tringali, I., Denaro, V., & Casu, M. (2024). Studying the effect of mindfulness, dissociative experiences, and feelings of loneliness in predicting the tendency to use substances in nurses. Journal of Integrative Nursing and Palliative Care, 5, 1–7. doi:10.51847/LASijYayRi

Bunsen, J., Berger, M., & Finkbeiner, M. (2021). Planetary boundaries for water: A review. Ecological Indicators, 121, 107022.

Burghate, S., & Mundada, A. (2023). Comprehensive overview of vaccines and their types for human immunization. Bulletin of Pioneer Research in Medical and Clinical Sciences, 3(1), 9–16. doi:10.51847/R1jQ49OZBM

Cousins, I. T., Johansson, J. H., Salter, M. E., Sha, B., & Scheringer, M. (2022). Outside the safe operating space of a new planetary boundary for per- and polyfluoroalkyl substances (PFAS). Environmental Science & Technology, 56(16), 11172–11179.

Cousins, I. T., Ng, C. A., Wang, Z., & Scheringer, M. (2019). Why is high persistence alone a major cause of concern? Environmental Science: Processes & Impacts, 21(5), 781–792.

Danchin, A., Ng, T. W., & Turinici, G. (2024). Transmission pathways and mitigation strategies for COVID-19. Interdisciplinary Research in Medical Sciences Special Issue, 4(1), 1–10. doi:10.51847/p0YhQPxvkW

Delcea, C., Gyorgy, M., Siserman, C., & Popa-Nedelcu, R. (2024). Impact of maladaptive cognitive schemas on suicidal behavior in adolescents during the COVID-19 pandemic: A predictive study. International Journal of Social and Psychological Aspects of Healthcare, 4, 42–46. doi:10.51847/EHCf9HzLEP

Efremov, A. (2023). Relieving psychosomatic pain and negative emotions through dehypnosis. Asian Journal of Individual and Organizational Behavior, 3, 18–24. doi:10.51847/BPFsWgpeFd

Ekpo, G. I., Victor, S. E., Eteng, O. E., Ebena, R., Ofonime, N., Umoh, E. U., Uduak, O. L., Ufot, S., & Eyong, U. (2023). Synergistic action of hesperidin and quercetin modulate the efficacy of CCl₄-induced nephrotoxicity in rat model. Bulletin of Pioneer Research in Medical and Clinical Sciences, 3(1), 49–57. doi:10.51847/EYAT8W7hWt

Elamin, S. M., Redzuan, A. M., Aziz, S. A. A., Hamdan, S., Masmuzidin, M. Z., & Shah, N. M. (2023). Educational impact on glycemic outcomes among children and adolescents diagnosed with type 1 diabetes. Journal of Medical Sciences and Interdisciplinary Research, 3(1), 41–64. doi:10.51847/s5KgRZ9e1O

Elshoubashy, H., Elkader, H. A., & Khalifa, N. (2023). Exploring the impact of gamification on brand engagement: An empirical study. Asian Journal of Individual and Organizational Behavior, 3, 59–71. doi:10.51847/v9Qc0ikIHr

Ferraz, M. P. (2024). Comparative evaluation of oral wound dressing materials: A comprehensive clinical review. Annals of Pharmacy Practice and Pharmacotherapy, 4, 51–56. doi:10.51847/pEkEpZ0DjV

González-Pleiter, M., Edo, C., Aguilera, Á., Viúdez-Moreiras, D., Pulido-Reyes, G., González-Toril, E., Osuna, S., de Diego-Castilla, G., Leganés, F., Fernández-Piñas, F., et al. (2021). Occurrence and transport of microplastics sampled within and above the planetary boundary layer. Science of the Total Environment, 758, 143213.

Grant, O., & Wallace, E. (2024). The influence of diversity-focused leadership on employee advocacy in selected Indian Fortune companies: The mediating roles of symmetrical internal communication and work engagement. Annals of Organizational Culture, Leadership and External Engagement Journal, 5, 159–173. doi:10.51847/X2YHdX2Qz7

Huang, C., Shi, Y., Yang, M., Tong, L., Dai, X., Liu, F., Huang, C., Zheng, J., Li, J., Xiao, H., et al. (2023). Spatiotemporal distribution, source apportionment and health risk assessment of atmospheric volatile organic compounds using passive air samplers in a typical coastal area, China. Journal of Cleaner Production, 425, 138899.

Iftode, C., Iurciuc, S., Marcovici, I., Macasoi, I., Coricovac, D., Dehelean, C., Ursoniu, S., Rusu, A., & Ardelean, S. (2024). Therapeutic potential of aspirin repurposing in colon cancer. Pharmaceutical Sciences and Drug Design, 4, 43–50. doi:10.51847/nyDxRaP7Au

Kalmar, A. F., Groffen, T., Vereecke, H., Teunkens, A., Dewinter, G., Mulier, H., Struys, M. M., & Rex, S. (2024). Volatile anaesthetics and PFAS forever chemicals: A critical gap in environmental impact assessments. Best Practice & Research Clinical Anaesthesiology, 38(2), 101–115.

Khashashneh, M., Ratnayake, J., Choi, J. J. E., Mei, L., Lyons, K., & Brunton, P. (2023). Comparative effectiveness and safety of low- vs high-concentration carbamide peroxide for dental bleaching: A systematic review. Annals of Pharmacy Practice and Pharmacotherapy, 3, 21–27. doi:10.51847/hE26QqCyuQ

Kim, S., Bae, H., & Kim, H. (2024). A diagnostic and therapeutic dilemma: Giant multifocal retroperitoneal dedifferentiated liposarcoma with dual heterologous components. Archives of the International Journal of Cancer and Allied Sciences, 4(2), 1–5. doi:10.51847/5JnC3jAkZz

Ku, J. K., Um, I. W., Jun, M. K., & Kim, I. H. (2023). Clinical management of external apical root resorption using amnion membrane matrix and bio-dentine. Journal of Current Research in Oral Surgery, 3, 1–5. doi:10.51847/lOSwt6Qzpv

Li, W., Han, C., Li, W., Zhou, W., & Han, L. (2020). Multi-scale effects of urban agglomeration on thermal environment: A case of the Yangtze River Delta megaregion, China. Science of the Total Environment, 722, 137824.

Li, W., Zhou, W., Han, L., & Qian, Y. (2019). Uneven urban-region sprawl of China’s megaregions and the spatial relevancy in a multi-scale approach. Ecological Indicators, 102, 603–614.

Liang, Q., Zhang, X., Miao, Y., & Liu, S. (2024). Multi-scale meteorological impact on PM2.5 pollution in Tangshan, northern China. Toxics, 12(9), 685.

Liu, F., Zhang, X., Murayama, Y., & Morimoto, T. (2020). Impacts of land cover/use on the urban thermal environment: A comparative study of 10 megacities in China. Remote Sensing, 12(2), 307.

Liu, H., Xie, X., & Chen, Q. (2024). Determinants of practice: Exploring healthcare providers’ beliefs and recommendations for cardiac rehabilitation in China. Annals of Pharmacy Education, Safety and Public Health Advocacy, 4, 63–74. doi:10.51847/UcQWoStr3h

Lu, G., Wang, Z., Wang, J., & Zhang, X. (2025). Transboundary impacts of microplastics within planetary boundaries: Regulation and responses of soil–plant systems under climate change. Environmental Research, 241, 118131.

MacLeod, M., Arp, H. P. H., Tekman, M. B., & Jahnke, A. (2021). The global threat from plastic pollution. Science, 373(6550), 61–65.

Mahaffy, P. G., Matlin, S. A., Holme, T. A., & MacKellar, J. (2019). Systems thinking for education about the molecular basis of sustainability. Nature Sustainability, 2(5), 362–370.

Manole, F., Mekeres, G. M., & Davidescu, L. (2023). Genetic insights into allergic rhinitis: A comprehensive review. Interdisciplinary Research in Medical Sciences Special Issue, 3(1), 39–44. doi:10.51847/GDXePBjkMJ

Miao, Y., Zhang, G., Li, X., & Xue, C. (2023). Physical and chemical processes within the planetary boundary layer and their impacts on air pollution. Frontiers in Environmental Science, 11, 1221546.

Muresan, G. C., Hedesiu, M., Lucaciu, O., Boca, S., & Petrescu, N. (2023). Evaluation of bone turnover indicators before dental implant insertion in osteoporotic patients: A case-control investigation. Journal of Current Research in Oral Surgery, 3, 27–32. doi:10.51847/P4EfMAbJVb

Nkosi, T., & Dlamini, A. (2023). Limited predictive performance of existing amisulpride PopPK models: External validation and proposal of model-based remedial regimens for non-adherence. Pharmaceutical Sciences and Drug Design, 3, 53–66. doi:10.51847/iAz1QEBpk0

Ogunseitan, O. A. (2025). Planetary boundaries for recalcitrant materials and toxic chemical pollutants: Specifications for sustainable safe operating zones. Frontiers in Environmental Science, 13, 1593947.

Oran, I. B., & Azer, O. A. (2023). The evolution of Turkey’s role in international development: A globalization perspective. Annals of Organizational Culture, Leadership and External Engagement Journal, 4, 1–8. doi:10.51847/oNOPb4T9g1

Persson, L., Carney Almroth, B. M., Collins, C. D., Cornell, S., De Wit, C. A., Diamond, M. L., Fantke, P., Hassellov, M., MacLeod, M., Ryberg, M. W., et al. (2022). Outside the safe operating space of the planetary boundary for novel entities. Environmental Science & Technology, 56(3), 1510–1521.

Purvis, B., Mao, Y., & Robinson, D. (2022). A multi-scale integrated assessment model to support urban sustainability. Sustainability Science, 17(5), 1785–1800.

Richardson, K., Steffen, W., Lucht, W., Bendtsen, J., Cornell, S. E., Donges, J. F., Drüke, M., Fetzer, I., Bala, G., Von Bloh, W., et al. (2023). Earth beyond six of nine planetary boundaries. Science Advances, 9(37), eadh2458.

Rieutor, D., De Oliveira-Neves, G., Mandil, G., & Bertozzi, C. (2025). Downscaling planetary boundaries: How does the framework’s localization hinder the concept’s operationalization? World, 6(3), 96.

Rockström, J., Donges, J. F., Fetzer, I., & Martin, M. A. (2024). Planetary boundaries guide humanity’s future on Earth. Nature Reviews Earth & Environment, 5(1), 66–77.

Rockström, J., Gupta, J., Qin, D., Lade, S. J., Abrams, J. F., Andersen, L. S., Armstrong McKay, D. I., Bai, X., Bala, G., Bunn, S. E., et al. (2023). Safe and just Earth system boundaries. Nature, 619(7968), 102–111.

Sheshadri, A., Kittiskulnam, P., & Johansen, K. L. (2024). Investigating the effects of physical activity on the amount of muscle cramp pain in hemodialysis patients. Journal of Integrative Nursing and Palliative Care, 5, 8–13. doi:10.51847/wZhaI3rJNj

Shrivastava, Y., Yuwanati, M., & Ganesh, N. (2023). Lack of combined effect of toluidine blue and cytomorphometry in differentiating dysplasia in oral exfoliative cytology. Asian Journal of Current Research in Clinical Cancer, 3(2), 25–31. doi:10.51847/sEjz14Y7qU

Sonbol, H. S. (2023). Nutritional proteomics: A pathway to understanding and optimizing human health. Journal of Medical Sciences and Interdisciplinary Research, 3(2), 45–64. doi:10.51847/SnZlWLL5go

Stöfen-O’Brien, A., & Ebbinghoff, L. (2025). Navigating the seas of contamination: Regulating forever chemicals in the ocean. Ocean Yearbook, 39(1), 290–312.

Strokal, M., Spanier, J. E., Kroeze, C., Koelmans, A., Flörke, M., Franssen, W., et al. (2019). Multi-scale modeling of nutrient pollution in the rivers of China. Environmental Science & Technology, 53(16), 9614–9625.

Su, Z., Qin, M., & Hu, D. (2024). Impact of lecture versus group discussion-based ethics training on nurses’ moral reasoning, distress, and sensitivity: A randomized clinical trial. Asian Journal of Ethics in Health and Medicine, 4, 81–96. doi:10.51847/iBvPMrJSLE

Tâlvan, E., Budișan, L., Mohor, C. I., Grecu, V., Berindan-Neagoe, I., Cristea, V., Oprinca, G., & Cristian, A. (2023). Interconnected dynamics among inflammation, immunity, and cancer: From tumor suppression to tumor onset, promotion, and progression. Archives of the International Journal of Cancer and Allied Sciences, 3(1), 25–28. doi:10.51847/nbSWsJHJMZ

Tian, L., Xu, G., Fan, C., Zhang, Y., & Gu, C. (2019). Analyzing mega city-regions through integrating urbanization and eco-environment systems: A case study of the Beijing–Tianjin–Hebei region. International Journal of Environmental Research and Public Health, 16(1), 114.

Uneno, Y., Morita, T., Watanabe, Y., Okamoto, S., Kawashima, N., & Muto, M. (2024). Assessing the supportive care needs of elderly cancer patients at Seirei Mikatahara General Hospital in 2023. International Journal of Social and Psychological Aspects of Healthcare, 4, 13–19. doi:10.51847/o4njwxvRSF

Villarrubia-Gómez, P., Almroth, B. C., Eriksen, M., Ryberg, M., & Cornell, S. E. (2024). Plastics pollution exacerbates the impacts of all planetary boundaries. One Earth, 7(8), 1125–1137.

Voulvoulis, N., Giakoumis, T., Hunt, C., & Kioupi, V. (2022). Systems thinking as a paradigm shift for sustainability transformation. Global Environmental Change, 75, 102544.

Wang, J., Zhou, W., Pickett, S. T. A., Yu, W., & Li, W. (2019). A multiscale analysis of urbanization effects on ecosystem services supply in an urban megaregion. Science of the Total Environment, 662, 199–212.

Wei, W., Ren, Y., Yang, G., Cheng, S., & Han, L. (2019). Characteristics and source apportionment of atmospheric volatile organic compounds in Beijing, China. Environmental Monitoring and Assessment, 191(12), 780.

Welman, A., & Chima, M. D. (2023). Respecting autonomy in African communities: Traditional beliefs and challenges for informed consent in South Africa. Asian Journal of Ethics in Health and Medicine, 3, 1–16. doi:10.51847/KmUs6uzoc1

Xiong, C., Wang, N., Zhou, L., Yang, F., Qiu, Y., Chen, J., Han, L., & Li, J. (2021). Component characteristics and source apportionment of volatile organic compounds during summer and winter in downtown Chengdu, southwest China. Atmospheric Environment, 251, 118306.

Yang, X., Wei, G., Liang, C., Qin, Z., Mo, L., Wei, X., et al. (2022). Beyond city expansion: Multi-scale environmental impacts of urban megaregion formation in China. National Science Review, 9(1), nwab107.

Yuan, Z., Li, X., Wang, Y., Zhao, J., Zhang, Y., Liu, H., et al. (2023). Source apportionment of consumed volatile organic compounds in the atmosphere of an urban area. Journal of Hazardous Materials, 458, 131980.

Zhang, J., Li, Y., Wu, C., et al. (2025). How does the state-led megaregion affect local environmental governance performance? Evidence from Yangtze River Delta urban agglomeration. Humanities and Social Sciences Communications, 12(1), 1–15.

Zhang, Y., Wang, Z., & Li, S. (2024). Can a new power system help maintain planetary boundaries within a safe operating space? Energy, 306, 132345.

Zhou, W., Jiao, M., Yu, W., & Wang, J. (2019). Urban sprawl in a megaregion: A multiple spatial and temporal perspective. Ecological Indicators, 96, 54–66.

Zhou, W., Yu, W., Qian, Y., Han, L., & Pickett, S. T. A. (2022). Beyond city expansion: Multi-scale environmental impacts of urban megaregion formation in China. National Science Review, 9(1), nwab107.