A mess of plastic It is not clear what strategies will be most effective in mitigating harm from the global problem of plastic pollution. Borrelle et al. and Lau et al. discuss possible solutions and their impacts. Both groups found that substantial reductions in plastic-waste generation can be made in the coming decades with immediate, concerted, and vigorous action, but even in the best case scenario, huge quantities of plastic will still accumulate in the environment. Science, this issue p. 1515, p. 1455 Even the most optimistic scenario projects huge amounts of plastic pollution in the coming decades. Plastic pollution is a planetary threat, affecting nearly every marine and freshwater ecosystem globally. In response, multilevel mitigation strategies are being adopted but with a lack of quantitative assessment of how such strategies reduce plastic emissions. We assessed the impact of three broad management strategies, plastic waste reduction, waste management, and environmental recovery, at different levels of effort to estimate plastic emissions to 2030 for 173 countries. We estimate that 19 to 23 million metric tons, or 11%, of plastic waste generated globally in 2016 entered aquatic ecosystems. Considering the ambitious commitments currently set by governments, annual emissions may reach up to 53 million metric tons per year by 2030. To reduce emissions to a level well below this prediction, extraordinary efforts to transform the global plastics economy are needed.
The term ‘occupational and environmental health’ includes any act of emission of any substance, likely to be hazardous in nature, which is either not originally present or is present in a higher concentration than normal in the natural atmosphere. Most air pollutants are generated from human activities (e.g. energy, transportation, industry, agriculture), but natural events in the living (e.g. methane emissions in wetlands) and non-living environment (e.g. volcanic eruptions) also contribute to atmospheric air pollution, although their relative importance has declined since the Industrial Revolution and the advent of modern fossil fuel-based economies. Pollutants may be classified as (1) primary (emitted directly into the atmosphere) or secondary (formed in the air through chemical reactions with other pollutants and gases); (2) indoor or outdoor; (3) gaseous or particulate.
Fossil-fuel combustion by-products are the world’s most significant threat to children’s health and future and are major contributors to global inequality and environmental injustice. The emissions include a myriad of toxic air pollutants and carbon dioxide (CO2), which is the most important human-produced climate-altering greenhouse gas. Synergies between air pollution and climate change can magnify the harm to children. Impacts include impairment of cognitive and behavioral development, respiratory illness, and other chronic diseases—all of which may be “seeded“ in utero and affect health and functioning immediately and over the life course. By impairing children’s health, ability to learn, and potential to contribute to society, pollution and climate change cause children to become less resilient and the communities they live in to become less equitable. The developing fetus and young child are disproportionately affected by these exposures because of their immature defense mechanisms and rapid development, especially those in low- and middle-income countries where poverty and lack of resources compound the effects. No country is spared, however: even high-income countries, especially low-income communities and communities of color within them, are experiencing impacts of fossil fuel-related pollution, climate change and resultant widening inequality and environmental injustice. Global pediatric health is at a tipping point, with catastrophic consequences in the absence of bold action. Fortunately, technologies and interventions are at hand to reduce and prevent pollution and climate change, with large economic benefits documented or predicted. All cultures and communities share a concern for the health and well-being of present and future children: this shared value provides a politically powerful lever for action. The purpose of this commentary is to briefly review the data on the health impacts of fossil-fuel pollution, highlighting the neurodevelopmental impacts, and to briefly describe available means to achieve a low-carbon economy, and some examples of interventions that have benefited health and the economy.
Between 1990 and 2008, air pollution emissions from US manufacturing fell by 60 percent despite a substantial increase in manufacturing output. We show that these emissions reductions are primarily driven by within-product changes in emissions intensity rather than changes in output or in the composition of products produced. We then develop and estimate a quantitative model linking trade with the environment to better understand the economic forces driving these changes. Our estimates suggest that the implicit pollution tax that manufacturers face doubled between 1990 and 2008. These changes in environmental regulation, rather than changes in productivity and trade, account for most of the emissions reductions. (JEL F18, H23, L60, Q52, Q53, Q56, Q58)
Environmental regulations affects the environmental quality of not only local areas but also surrounding regions. It remains unknown whether the effect of environmental regulations on the surrounding regions is free riding or pollution shelter. Based on the data from 2006 to 2018, the spatial correlation of PM2.5 in Beijing-Tianjin-Hebei (BTH), Yangtze River Delta (YRD) and Pearl River Delta (PRD) urban agglomerations in China was examined in this study. In addition, the spatial spillover effects of environmental regulation on PM2.5 concentrations were explored while the socio-economic driving factors of the heterogeneity of pollution spillover were identified via SDM based STIRPAT framework. Results showed that the characteristics of PM2.5 concentrations spatial correlations varies from one urban agglomeration to another. This study revealed that the air pollution is affected by not only local environmental regulations, but also regulations implemented in surrounding cities. The PM2.5 concentration of BTH, YRD and PRD increased by 0.76, 0.147 and 0.109 for each unit increase in environmental regulation of surrounding cities, respectively. In fact, cities with loose regulation become the pollution shelters. The spatial spillover effects offset the improvement effects of local environmental regulations on the air quality. Furthermore, the comparison amongst three urban agglomerations showed that the spatial spillover effects of PM2.5 concentration in BTH and YRD are higher than that of PRD. This is attributed to differences in industrial structure, population density, economic development, FDI and geographical location. Therefore, the spatial spillover effects should be taken into consideration and joint regulation should be strengthened to address air pollution issues in urban aggregations.
Abstract Given the rapid industrialization and urbanization of China, environmental problems have gradually become major constraints that hinder its sustainable economic development. Moreover, China's pollution abatement and reduction of greenhouse gas emissions have been severely affected by pressures coming from domestic environmental appeals and international environmental diplomacy. By using integrated data from the Chinese Industrial Enterprise and the Chinese Enterprise Environmental Survey and Reporting databases, this study constructs comprehensive indicators of pollutant discharge intensity and carbon emissions index at the enterprise level and uses the panel fixed effect model, Kaya identity, and mediation effect model to assess the effects of environmental regulations on pollution abatement and collaborative emissions reduction from the micro-perspective. Results show that these regulations can abate the pollution emissions of Chinese industrial enterprises and verify the effectiveness of environmental policies. These regulations can also efficiently reduce the carbon dioxide emissions of enterprises through pollution abatement. In other words, environmental regulations facilitate a collaborative emissions reduction of pollutant and greenhouse gas emissions from enterprises. Such collaborative emissions reduction effect is also influenced by the energy structure and consumption of enterprises. This paper presents empirical evidence and policy basis for further improving China's environmental regulation policy system and achieving coordinated progress in China's economic development and environmental governance.
The strategic interaction of inter-regional environmental regulation is a typical feature of local government behavior in China, which can affect the green productivity growth in the local region through the Porter effect and the pollution refuge effect. Based on the panel data of 274 prefecture-level cities from 2005 to 2015 in China, this thesis constructs a comprehensive indicator of environmental regulation, accurately identifies the mode of China's inter-regional strategic interaction of environmental regulation and calculates the green total factor productivity, green technology efficiency and green technology progress in 274 cities. In addition, this thesis also conducts an empirical analysis on the effect of the strategic interaction of environmental regulation on the green productivity in China. The author of this thesis finds that: (1) the mode of strategic interaction of environmental regulation in China is complementary "race to the top", that is, the local region will strengthen its environmental regulation, if the environmental regulations in its adjacent regions are strengthened; (2) the environmental regulation in the local region promotes the green productivity in China, while the weighted environmental regulation in the adjacent regions inhibits the green productivity. What's more, environmental regulations in economic-proximity regions have greater negative spatial spillover effects on green productivity in the local region, compared with those in geographic-proximity regions; (3) environmental regulation in the local region and its adjacent regions can affect the green productivity growth in China through the channels of green innovation and pollution transfer, that is, the Porter effect and pollution refuge effect coexist in China. They mean that in the process of China's regional environmental governance, it is necessary to reduce pollution transfer, and promote green innovation so as to achieve sustainable and high-quality economic development.
Agricultural non-point source (NPS) pollution in water source protection areas poses serious challenges for governments in developing countries. It is important to consider the environmental behavior of farmers when exploring the causes of NPS pollution as well as when establishing scientific controls and management measures. However, the poor understanding of factors influencing the environmental behavior of farmers and the lack of a suitable environmental socio-psychological model limit the application of the environmental behavior of farmers in NPS pollution management. In this study, we therefore integrated the theory of planned behavior (TPB) and the protection motivation theory (PMT) to identify the main determinants of the NPS pollution-related environmental behavior and intention of farmers in the Water Source Area of the Middle Route of the South-to-North Water Diversion Project in China. Results indicated that the integrated model provided a better understanding of the environmental behavior and intention of farmers than that provided by each component when used individually, and revealed that farmers perceived that the susceptibility and severity of threats caused by water deterioration influenced environmental intention through the mediating effects of subjective norm and attitude toward adopting pro-environmental behavior. At the same time, the perceived vulnerability of farmers was relatively high and their perceived severity was relatively low. Furthermore, the subjective norm, attitude, self-efficacy (i.e., the perceived behavioral control), and response efficacy positively and significantly influenced intention. However, response cost had a significantly negative effect on intention. Among them, subjective norm had the largest effect on intention. Intention was the key determinant for the actual environmental behavior of farmers, while self-efficacy also had a significantly positive effect on behavior. Managing and controlling agricultural NPS pollution requires a multi-disciplinary and comprehensive approach. Therefore, an integrated theoretical framework was developed in this study by integrating TPB and PMT to gain insight into the environmental behaviors and intention of farmers. The results provided a theoretical basis for NPS pollution control.
Abstract As China haze pollution has been more and more serious, the government has issued many regulations to control it. As has been demonstrated that, nowadays industrial structure is one of the main causes of haze pollution. Considering the rationalization and upgrading of industrial structure, this paper explores the direct effect and interaction between environmental regulation and industrial structure. The spatial panel model has been used to conduct empirical research based on the province-level panel data of 30 Chinese provinces from 2006 to 2016. The results show that: from the perspective of independence, the environmental regulations play a significant role in reducing haze pollution within expectations. The industrial structure can reduce haze pollution through the path of rationalization, but the role of the industrial structure upgrading has not been shown for the time being. From the perspective of linkage, the development of environmental regulation has enhanced the haze reduction effect of industrial structure upgrading, while environmental regulation has not yet affected the haze reduction effect of new industrial structure rationalization. Finally, to test of regional heterogeneity, Hu Huanyong line is introduced as the baseline which divides China into southeast and northwest sides. On the southeast side, environmental regulations have a significant mitigation effect on haze, and it can effectively reduce haze pollution through rationalization of industrial structure. In contrast, the efficiency of environmental measures is not significant on the northwest side.
Abstract The pollution associated has intensified the environmental pressure within industrial transfer between the central and the western region in China. It’s the key issue that how to use environmental regulations to promote the orderly pollution-intensive industries transfer and the optimization of industrial structure to realize the construction of ecological civilization during the transformation and upgrading of economic. By constructing the index of environmental regulation and industry transfer, this paper analyzed the spatial-temporal change of pollution-intensive industry transfer. We collected panel data of 30 provinces in China from 2004 to 2016 and studied the spatial differences of pollution-intensive industry transfer from the perspective of environmental regulation. This paper studied the path and mechanism of environmental regulation on the pollution-intensive industry transfer theoretically and empirically with System Generalized Method of Moments (GMM) model. The conclusions are as follows: Firstly, the pollution-intensive industry transfer in China shows a general trend from the east to the central and western regions. Secondly, there are obvious differences in environmental regulation between different regions. Thirdly, there are some differences in the impact of environmental regulation on industrial transfer. Therefore, the central and western regions should coordinate economic development and environmental protection when undertaking industrial transfer from the east, to optimize and upgrade industrial structure, and promote long-term economic development.
Abstract Background The advancement of nanotechnology underscores the imperative need for establishing in silico predictive models to assess safety, particularly in the context of chronic respiratory afflictions such as lung fibrosis, a pathogenic transformation that is irreversible. While the compilation of predictive descriptors is pivotal for in silico model development, key features specifically tailored for predicting lung fibrosis remain elusive. This study aimed to uncover the essential predictive descriptors governing nanoparticle-induced pulmonary fibrosis. Methods We conducted a comprehensive analysis of the trajectory of metal oxide nanoparticles (MeONPs) within pulmonary systems. Two biological media (simulated lung fluid and phagolysosomal simulated fluid) and two cell lines (macrophages and epithelial cells) were meticulously chosen to scrutinize MeONP behaviors. Their interactions with MeONPs, also referred to as nano-bio interactions, can lead to alterations in the properties of the MeONPs as well as specific cellular responses. Physicochemical properties of MeONPs were assessed in biological media. The impact of MeONPs on cell membranes, lysosomes, mitochondria, and cytoplasmic components was evaluated using fluorescent probes, colorimetric enzyme substrates, and ELISA. The fibrogenic potential of MeONPs in mouse lungs was assessed by examining collagen deposition and growth factor release. Random forest classification was employed for analyzing in chemico, in vitro and in vivo data to identify predictive descriptors. Results The nano-bio interactions induced diverse changes in the 4 characteristics of MeONPs and had variable effects on the 14 cellular functions, which were quantitatively evaluated in chemico and in vitro. Among these 18 quantitative features, seven features were found to play key roles in predicting the pro-fibrogenic potential of MeONPs. Notably, IL-1β was identified as the most important feature, contributing 27.8% to the model’s prediction. Mitochondrial activity (specifically NADH levels) in macrophages followed closely with a contribution of 17.6%. The remaining five key features include TGF-β1 release and NADH levels in epithelial cells, dissolution in lysosomal simulated fluids, zeta potential, and the hydrodynamic size of MeONPs. Conclusions The pro-fibrogenic potential of MeONPs can be predicted by combination of key features at nano-bio interfaces, simulating their behavior and interactions within the lung environment. Among the 18 quantitative features, a combination of seven in chemico and in vitro descriptors could be leveraged to predict lung fibrosis in animals. Our findings offer crucial insights for developing in silico predictive models for nano-induced pulmonary fibrosis.
Claire Anderson, Lydia Niemi, Naoko Arakawa
et al.
Objectives This qualitative study explored public and prescriber awareness of pharmaceutical pollution in the water environment and eco-directed sustainable prescribing (EDSP) as a mitigation strategy to reduce the environmental impact of prescribing in Scotland.Design Focus groups explored prescriber and public perceptions of the topic. Common questions were asked through semistructured facilitation. Focus groups were digitally recorded and transcribed verbatim using an artificial intelligence system, then anonymised and thematically analysed using NVivo software. Data were iteratively analysed using the one sheet of paper technique.Setting Public focus groups were held in-person (Inverness, Scotland, April 2023), and prescriber focus groups were held virtually (MS Teams, August 2023).Participants Nine public representatives and 17 NHS Scotland prescribers participated in one of four focus groups. Purposive and opportunistic sampling approaches were used to recruit participants through social media and other channels (ie, community groups, professional emails, general practitioner and hospital flyers). Prescriber representatives registered interest through an online survey to gather information about their professional background. Responses were reviewed to ensure representation of a mixture of medical backgrounds, experience, sectors and health boards.Results There is growing awareness among the public and healthcare professionals of pharmaceutical pollution in the environment, but further education is required on the drivers, potential effects and possible interventions. Suggestions for more sustainable healthcare included public health awareness campaigns, better provision for pharmacy take-back schemes, clear medicine/packaging labelling, regular medicines reviews and more considered patient-centred care. From the prescriber perspective, EDSP resonated well with current sustainability initiatives (eg, Realistic Medicine, switching to dry-powder inhalers), but barriers to EDSP included lack of knowledge, confidence, time and resources to implement changes. Although the public representatives were generally open to the concept of EDSP, this decision required weighing pros/cons considering personal health choices, information accessibility and transparency, and trust in and time with prescribers.Conclusions This study identified new insights from prescribers and the public related to the concept of, and barriers to, EDSP in Scotland, as well as perspectives regarding knowledge support tools and information communication. Cross-sector and transdisciplinary collaborative approaches are needed to address the challenges identified here. Nonetheless, EDSP merits further exploration in developing more sustainable, appropriate and effective healthcare which contributes to improved public and planetary health.
Abstract Background SrMnO3 demonstrates high efficiency in degrading chlorinated volatile organic compounds (CVOCs). However, the accumulation of chlorine species and the loss of active sites limit the further enhancement of its catalytic performance. Purpose To improve the catalytic and chlorine poisoning resistance properties of SrMnO3-based catalyst. Methods A modified hydrothermal method was employed to synthesize a multi-metal-oxides catalyst based on SrMnO3 with Ce introduced to lattice to increase surface defect density. Influences of catalyst dosage, relative humidity, pollutant concentration and airspeed on chlorobenzene (CB) removal efficiency were systematically investigated. Results The results revealed the great removal efficiency of the multi-metal-oxides catalyst based on SrMnO3 with T90 of 247 ℃, T95 of 269 ℃, and the mineralization rate of 71%. The catalytic mechanism on the catalyst was explored through comprehensive characterizations and the potential degradation pathways of CB were inferred. Conclusion This work provides new insights into the design of metal-doped perovskite catalysts, highlighting the critical role of surface defects and oxygen vacancies in catalytic performance. Graphical Abstract
Carme Carrion, Camilla Alay Llamas, Eka Dian Safitri
et al.
Abstract Background Planetary Health studies the impact of the global environmental crisis on health. Urgent transdisciplinary, intersectoral, and holistic solutions adapted to local realities are needed. Designing training programs attuned to contextual needs of diverse groups and geographical areas is crucial. Planetary health programs are emerging worldwide, but little is known about their scope and learning outcomes. A systematic scoping review is needed to shed light on the state of planetary health education. Objectives This review aims to identify existing frameworks, competencies, content, and teaching methods in planetary health education. Methods Following PRISMA Extension for Scoping Reviews (PRISMA-ScR) guidelines, we included studies targeting undergraduate and postgraduate students, focusing on skills, knowledge, and abilities related to planetary health, published in English or Spanish. No exclusions were made based on geographic area, study design, or publication period. Databases consulted were MEDLINE via PubMed, Scopus, Web of Science, and ProQuest. Selection and data extraction processes were conducted systematically. Results We included 73 articles, with 88% from high-income countries and 49% focused on health professionals. Conceptual frameworks identified include "One Health," "Sustainable Development Goals," and the "Planetary Health Education Framework." Transversal skills (complex problem-solving, systemic thinking, collaboration, interdisciplinary) and specific competencies (understanding health interactions with climate change, pollution) were outlined in 45% of studies. Half of the studies described 23 general topics and 93 specific content areas. Teaching methods included in-person (59%), virtual (12%), and hybrid models (29%). Conclusions This review highlights the heterogeneity in conceptual frameworks, competencies, content, and teaching methods in planetary health education for health professionals. Future research should focus on developing and evaluating evidence-based educational models to address the evolving challenges of planetary health. Recommendations include enhancing collaboration among stakeholders and integrating innovative teaching methods to improve planetary health education. Trial registration The protocol has been registered in the Open Science Framework database (registration number: osf.io/h2b3j, March 2024). Clinical trial number: not applicable.
Abstract China is facing some of the worst air pollution in the world and corporate environmental information disclosure (EID) has become an increasingly popular approach for environmental regulation. However, there is a lack of evidence on the corporate EID impacts of air pollution. This study examines the correlation between air pollution and corporate EID using a panel data collected from listed Chinese firms in heavy polluting industries from 2014 to 2018. The empirical results reveal that the relationship between air pollution and corporate EID is significantly negative. The air pollution in eastern regions has greater impacts on corporate EID compared with the mid-western regions. Moreover, impacts air pollution has on corporate EID also differ in enterprises located in regions with different environmental information transparency. This study provides a snapshot of the dialogues between air pollution and EID development.
Abstract As the most populous country with huge fossil energy consumption, China's employment and environmental problems have attracted worldwide attention. This paper contributes to the existing research by measuring both employment and environmental problems using a two-layer nested dixit-Stiglitz model and taking the skill premium as a mediator to analyze the direct and indirect effects of environmental regulation on environmental pollution. It is found that: (1) the impact of environmental regulation on the skill premium is U-shaped. (2) the impact of environmental regulation on environmental pollution is inverted U-shaped, and the indirect effect through skill premium is significantly negative. (3) the environmental regulations in most parts of China have not reached the level of promoting skill premium and reducing environmental pollution for most of the time. (4) China's skill premium can play a better role in reducing emissions in places with high-coal consumption