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1.
Microb Biotechnol ; 17(3): e14434, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38465780

RESUMO

Our planet, which operates as a closed system, is facing increasing entropy due to human activities such as the overexploitation of natural resources and fossil fuel use. The COP28 in Dubai emphasized the urgency to abandon fossil fuels, recognizing them as the primary cause of human-induced environmental changes, while highlighting the need to transition to renewable energies. We promote the crucial role of microbes for sustaining biogenic cycles to combat climate change and the economic potential of synthetic biology tools for producing diverse non-fossil fuels and chemicals, thus contributing to emission reduction in transport and industry. The shift to 'green chemistry' encounters challenges, derived from the availability of non-food residues and waste (mainly lignocellulosic) as raw material, the construction of cost-effective bioprocessing plants, product recovery from fermentation broths and the utilization of leftover lignin residues for synthesizing new chemicals, aligning with circular economy and sustainable development goals. To meet the Paris Agreement goals, an urgent global shift to low-carbon, renewable sources is imperative, ultimately leading to the cessation of our reliance on fossil fuels.


Assuntos
Combustíveis Fósseis , Desenvolvimento Sustentável , Humanos , Energia Renovável , Recursos Naturais , Biotecnologia
2.
PLoS One ; 19(3): e0298545, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38507420

RESUMO

Advances in financial inclusions have contributed to economic growth and poverty alleviation, addressing environmental implications and implementing measures to mitigate climate change. Financial inclusions force advanced countries to progress their policies in a manner that does not hinder developing countries' current and future development. Consequently, this research examined the asymmetric effects of information and communication technology (ICT), financial inclusion, consumption of primary energy, employment to population ratio, and human development index on CO2 emissions in oil-producing countries (UAE, Nigeria, Russia, Saudi Arabia, Norway, Kazakhstan, Kuwait, Iraq, USA, and Canada). The study utilizes annual panel data spanning from 1990 to 2021. In addition, this study investigates the validity of the Environmental Kuznets Curve (EKC) trend on the entire sample, taking into account the effects of energy consumption and population to investigate the impact of financial inclusion on environmental degradation. The study used quantile regression, FMOLS, and FE-OLS techniques. Preliminary outcomes revealed that the data did not follow a normal distribution, emphasizing the need to use quantile regression (QR). This technique can effectively detect outliers, data non-normality, and structural changes. The outcomes from the quantile regression analysis indicate that ICT consistently reduces CO2 emissions in all quantiles (ranging from the 1st to the 9th quantile). In the same way, financial inclusion, and employment to population ratio constrains CO2 emissions across each quantile. On the other side, primary energy consumption and Human development index were found to increase CO2 emissions in each quantile (1st to 9th). The findings of this research have implications for both the academic and policy domains. By unraveling the intricate interplay between financial inclusion, ICT, and environmental degradation in oil-producing nations, the study contributes to a nuanced understanding of sustainable development challenges. Ultimately, the research aims to guide the formulation of targeted policies that leverage financial inclusion and technology to foster environmentally responsible economic growth in oil-dependent economies.


Assuntos
Dióxido de Carbono , Tecnologia da Informação , Humanos , Dióxido de Carbono/análise , Comunicação , Desenvolvimento Econômico , Tecnologia , Energia Renovável
3.
PLoS One ; 19(2): e0292892, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38330055

RESUMO

Where local resources for renewable electricity are scarce or insufficient, long-distance electricity imports will be required in the future. Even across long distances, the variable availability of renewable energy sources needs to be managed for which dedicated storage options are usually considered. Other alternatives could be demand-side flexibility and concentrated solar power with integrated thermal energy storage. Here their influence on the cost of imported electricity is explored. Using a techno-economic linear capacity optimization, exports of renewable electricity from Morocco and Tunisia to CERN in Geneva, Switzerland in the context of large research facilities are modeled. Two different energy supply chains are considered, direct imports of electricity by HVDC transmission lines, and indirect imports using H2 pipelines subsequent electricity generation. The results show that direct electricity exports ranging from 58 EUR/MWh to 106 EUR/MWh are the more economical option compared to indirect H2-based exports ranging from 157 EUR/MWh to 201 EUR/MWh. Both demand-side flexibility and CSP with TES offer significant opportunities to reduce the costs of imports, with demand-side flexibility able to reduce costs for imported electricity by up to 45%. Research institutions in Central Europe could initiate and strengthen electricity export-import partnerships with North Africa to take on a leading role in Europe's energy transition and to secure for themselves a long-term, sustainable electricity supply at plannable costs.


Assuntos
Energia Renovável , Energia Solar , Europa (Continente) , Eletricidade , Tunísia
4.
Environ Sci Pollut Res Int ; 31(13): 20033-20047, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38367115

RESUMO

Considering a vast majority of application areas, the study investigates how environmental tax (ET) affects ecological footprint. In this context, the study examines the European Union Five (EU5) countries, considers ecological footprint (EF) as the proxy of the environment, uses ET as tax-based environmental measures by making both disaggregated (i.e., energy and transport) and aggregated level analysis, and performs novel nonlinear quantile-based approaches for the period from 1995/Q1 to 2021/Q4. The outcomes show that on EF (i) energy-related ET has only a declining effect at lower and middle quantiles in Germany and at lower quantiles in Italy, whereas it does not have a curbing effect in other countries; (ii) transport-related ET is not effective on EF in any country, which means that it does not have a curbing effect; (iii) total ET has a decreasing effect in only Germany; and (iv) the alternative method validates the robustness. Thus, the study demonstrates the changing effect of ET across countries, quantiles, and ET types in curbing EF. Hence, it can be suggested that Germany can go on relying further on energy-related ET practices to decrease EF, whereas there is a long way for the remaining EU5 countries as well as transport-related ET in curbing EF.


Assuntos
Dióxido de Carbono , Desenvolvimento Econômico , União Europeia , Alemanha , Itália , Dióxido de Carbono/análise , Energia Renovável
5.
PLoS One ; 19(2): e0295448, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38354176

RESUMO

There has been a shift in focus toward environmentally and economically sustainable forms of economic growth known as High-quality economic development (HQED). However, this study analyzes the impact of tourism development (TD) and renewable energy consumption on HQED in 30 provinces of China, while covering the time period from 2007 to 2021. TD and HQED has been measured with help of Global Moran Index. This study has used dynamic spatial Durbin model (SDM) to measure the dynamic impact of TD index and renewable energy consumption on HQED along with green finance, foreign direct investment and investment in education. The findings from empirical analysis shows that TD has negative impact on HQED and in more developed regions, the relationship is positive, while in the less developed western part of China, the U-shape has been reversed. Central and northeastern China have a U-shaped connection, while it has been noticed the interaction term of TD and renewable energy endorses HQED. In addition, renewable energy consumption, green finance and increase in education investment have positive and significant impact on HQED while foreign direct investment has negative impact on HQED in China. Therefore, in the light of this study policymakers should focus on the quality of tourism industry, green finance for renewable energy supply and enhancing education investment in China to attain the goal of HQED.


Assuntos
Desenvolvimento Econômico , Turismo , Investimentos em Saúde , Escolaridade , China , Energia Renovável , Dióxido de Carbono
6.
Sci Rep ; 14(1): 4420, 2024 02 23.
Artigo em Inglês | MEDLINE | ID: mdl-38388557

RESUMO

Prior literature is substantive in highlighting the nexus between pollutant and socio-economic predictors; however, the role of human interaction has not been sufficiently explored. Thus, the present study examines the validity of the environmental Kuznets Curve (EKC) hypothesis in the presence of energy consumption, overpopulation, and human capital index in five South Asian countries. It employs fixed effects, random effects, and dynamic panel causality techniques with a set of panel data from 1972 to 2021. The baseline results validate the existence of the EKC hypothesis in the recipient panel. Nevertheless, the findings reveal that energy consumption and population density have positive effects, while human capital has negative impacts on CO2 emissions. Furthermore, the study observes that energy consumption and per capita GDP have a significant causal link with CO2 emissions, whereas CO2 emissions are evident to have causality with population density and human capital index. The results are robust and suggest that the consolidation of an effective regulatory framework and technological improvements are substantial measures to improve environmental quality in South Asia. Moreover, allocating sufficient resources to uplift contemporary educational and health status would be imperative to improving environmental quality as aspired to by the Paris Agreement.


Assuntos
Dióxido de Carbono , Desenvolvimento Econômico , Humanos , Densidade Demográfica , Dióxido de Carbono/análise , Modelos Teóricos , Ásia Meridional , Energia Renovável
7.
Environ Sci Pollut Res Int ; 31(11): 16846-16864, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38324152

RESUMO

Urban areas serve as a vital contribution to the global structural change towards renewable and sustainable energy technologies which also influence climate change. The aim of this paper is to identify the adoption roadblocks to renewable and sustainable urban energy technologies. This research has three parts: a mini-systematic literature study was conducted to identify the most prevalent roadblocks. Using total interpretive structural modeling (ISM), the relationships between the roadblocks and the source of causation were then examined. The roadblocks are classified based on their dependence and driving powers using MICMAC analysis in the third part of this research. The principal results and major conclusions demonstrate that all roadblocks are necessary for renewable and sustainable urban energy technologies. The roadblocks at level I are insufficient infrastructure, lack of coordination among authorities, lack of quality and reliable data and information, and competition with non-renewable technologies; roadblocks in level II are lack of skilled and trained personnel, limited public participation, awareness, and consumer interest, and lack of standardized technology; roadblock in level III is high initial investment cost; and lastly, roadblocks in level IV are lack of subsidies and financial support programs and absence of coherent related policies. Furthermore, as a result of the MICMAC analysis, none of the aforementioned roadblocks are classified as autonomous variables, implying that they are all required. The dependent roadblocks to renewable and sustainable energy technologies are defined as lack of coordination among authorities, lack of information, and competition with non-renewable technologies. Moreover, linkage roadblocks have high dependence and driving powers which are insufficient infrastructure, limited awareness and consumer interest, and lack of standardized technology. Lastly, high initial investment costs, lack of subsidies and financial support programs, absence of coherent related policies, and lack of skilled and trained personnel are the driving roadblocks with high driving power however not dependent.


Assuntos
Políticas , Energia Renovável , Humanos , Tecnologia , Mudança Climática , Ataxia , Dióxido de Carbono , Desenvolvimento Econômico
8.
PLoS One ; 19(2): e0296516, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38330089

RESUMO

The purpose of the study is to investigate the relationships and potential impacts of environmental pollutants, human resources, GDP, sustainable power sources, financial assets, and SAARC countries from 1995 to 2022. Board cointegration tests, D-H causality, cross-sectional reliance (CSD), Saville and Holdsworth Restricted (SHL), and the DSK Appraisal Strategy were among the logical techniques employed to discover long-term connections between these components. Results demonstrate that GDP growth, renewable energy sources (REC), and environmental pollution (ENP) all contribute to SAARC countries' progress. However, future opportunities and HR are negatively impacted by increased ecological pollution. The results of the two-way causality test demonstrate a strong correlation between HR and future possibilities. Opportunities for the SAARC countries are closely related to the growth of total national output, the use of green electricity, and public support sources. Ideas for tackling future projects are presented in the paper's conclusion. These include facilitating financial development, reducing ecological pollution, financing the progress of human resources, and promoting the use of sustainable power sources.


Assuntos
Desenvolvimento Econômico , Poluentes Ambientais , Humanos , Estudos Transversais , Dióxido de Carbono/análise , Poluição Ambiental/análise , Energia Renovável
9.
Environ Sci Pollut Res Int ; 31(11): 17140-17155, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38334924

RESUMO

Recently, countries have been making intensive efforts to alleviate the burden on the environment and to make environmental conditions sustainable. In this context, our study aims to investigate the long-term impact of renewable energy consumption (REC) and human capital (HC) by considering the load capacity factor (LCF). We also investigate the long-term impact of economic growth (Y) and non-renewable energy consumption (NREC) on the LCF. In this context, we analyze annual data for the U.S. for the period 1965-2018 using the newly developed augmented ARDL (AARDL) approach. The long-term empirical results show the following. i) Increases in Y negatively affect LCF and deteriorate environmental quality. ii) Increases in NREC negatively affect LCF and accelerate the deterioration of environmental quality. iii) REC has no significant impact on environmental quality. iv) Increases in HC support the improvement of environmental quality. The empirical results show that contrary to expectations, renewable energy consumption does not have a significant impact on environmental quality in the U.S., whereas human capital is an important factor in improving environmental quality. In this context, US policymakers should pave the way for more investment in eco-friendly renewable energy investments and human capital to establish sustainable environmental quality. Policymakers should also take steps to reduce the use of fossil fuels.


Assuntos
Dióxido de Carbono , Energia Renovável , Humanos , Estados Unidos , Dióxido de Carbono/análise , Desenvolvimento Econômico , Investimentos em Saúde , Combustíveis Fósseis
10.
J Environ Manage ; 354: 120392, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38387355

RESUMO

The Paris Agreement, a landmark international treaty signed in 2016 to limit global warming to 2°C, has urged researchers to explore various strategies for achieving its ambitious goals. While Renewable Energy (RE) innovation holds promise, it alone may not be sufficient as critical deadlines approach. This field of research presents numerous challenges, foremost among them being the costliness of materials involved. However, emerging advancements in Machine Learning (ML) technologies provide a glimmer of hope; these sophisticated algorithms can accurately predict the output of energy systems without relying on physical resources and instead leverage available data from diverse energy platforms that have emerged over recent decades. The primary objective of this paper is to comprehensively explore various ML techniques and algorithms in the context of Renewable Energy Systems (RES). The investigation will address several vital inquiries, including identifying and evaluating existing RE technologies, assessing their potential for further advancement, and thoroughly analyzing the challenges and limitations associated with their deployment and testing. Furthermore, this research examines how ML can effectively overcome these obstacles by enhancing RES performance. By identifying future research opportunities and outlining potential directions for improvement, this work seeks to contribute to developing environmentally sustainable energy systems.


Assuntos
Algoritmos , Aquecimento Global , Aprendizado de Máquina , Paris , Energia Renovável
11.
J Environ Manage ; 354: 120398, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38387356

RESUMO

This study investigates the relationship between economic growth, renewable energy consumption, financial openness, and environmental degradation in selected ASEAN (Association of Southeast Asian Nations) countries (Cambodia, Indonesia, Malaysia, Philippines, Singapore, Thailand, and Vietnam) from 1996 to 2018. We aim to analyze how macroeconomic situation, energy-related factors, and financial determinants contribute to environmental deprivation in selected countries whose growth has recently been substantial. To address this issue, we employ second-generation panel data regression models and quantiles with fixed-effects estimators. Initially, the cointegration analysis supports a long-run association between the variables of our interest. Empirical findings confirm the environmental Kuznets curve hypothesis, but it seems valid only for Singapore. Moreover, results highlight the ecological role of renewable energy for ASEAN countries to achieve Sustainable Development Goals, such as transitioning to a low-carbon economy and reducing air pollution. On the contrary, financial openness is a cause that positively influences CO2 emissions. This research offers practical policy recommendations for many countries, including the ASEAN economies, to attain sustainable development.


Assuntos
Desenvolvimento Econômico , Energia Renovável , Filipinas , Indonésia , Singapura , Dióxido de Carbono/análise
12.
Sci Total Environ ; 921: 171127, 2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-38387562

RESUMO

Most plastic waste generated from plastic consumption cannot be recycled and is destroyed by burning. As a result of burning plastics, microplastics spread into the atmosphere, increasing air pollution. Respiratory diseases and chronic health problems are caused by air pollution. Approximately 7 million people die each year due to pollution-related ailments. Therefore, it is crucial to provide empirical evidence rather than approximate estimates of the role of plastic consumption in air pollution-related deaths. Also, understanding the causes of air pollution-related deaths and demonstrating the policies' effectiveness will provide valuable insights for policymakers, the international community, and researchers. This study investigates the effects of plastic consumption, health expenditures, natural resources, economic complexity, and renewable energy on air pollution deaths in the USA from 1995 to 2019 using the novel Fourier Augmented ARDL method. The findings show that plastic consumption, health expenditures, natural resources, and economic complexity increase air pollution deaths, while renewable energy decreases it. Such findings imply that plastic consumption is an essential determinant of air pollution-related mortality, that health policy must be reconsidered, that efficient use of resources is important and that sophisticated economic structures do not always produce the desired results. Overall, policymakers should review health policies to reduce deaths from air pollution and take measures to support green growth using renewable energy and economic complexity tools.


Assuntos
Poluição do Ar , Plásticos , Humanos , Gastos em Saúde , Energia Renovável , Desenvolvimento Econômico , Recursos Naturais , Dióxido de Carbono/análise
13.
J Environ Manage ; 354: 120358, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38412728

RESUMO

The global increase in temperature and climate change signals the need for humanity to reduce greenhouse gas emissions and to adopt eco-friendly lifestyles. The 2023 United Nations Climate Change Conference (COP28) in the UAE emphasized this, urging nations to commit to the Paris Agreement and pursue a greener, carbon-free future. In recent decades, climate change has become a critical issue, primarily because of the extensive use of fossil fuels and conventional energy resources. Economic growth has led to an increase in energy consumption and widespread environmental damage. The present study empirically explores whether any changes in environmental governance, economic complexity, geopolitical risk, and the interaction term influence energy transition and environmental stability in OECD economies over the period 1990-2021. Novel econometric methods, including Westerlund co-integration and the Method of Moments Quantile Regression (MMQR), are employed to address complexities such as cross-sectional dependency and panel causality. The key findings from the MMQR technique showed a positive link between environmental governance and economic complexity in driving sustainable energy transitions, thus bolstering environmental resilience in OECD countries. However, economic complexity counterbalances environmental stability. Significantly, geopolitical risk acts as a moderating variable, enhancing the effects of governance and complexity on sustainable energy practices and environmental stability. Based on these insights, this study recommends strategic initiatives, including investment in eco-friendly technologies, to fast-track the shift to clean energy and strengthen environmental resilience in OECD countries. These strategies align with the broader objectives of global sustainable development, offering a path towards a greener and more sustainable future.


Assuntos
Conservação dos Recursos Naturais , Política Ambiental , Estudos Transversais , Organização para a Cooperação e Desenvolvimento Econômico , Desenvolvimento Econômico , Energia Renovável , Dióxido de Carbono
14.
Environ Sci Pollut Res Int ; 31(13): 19257-19273, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38355864

RESUMO

Since the beginning of the twenty-first century, the rapid development of modern technologies has brought unprecedented social prosperity to mankind as technologies penetrate every sector of the economy. These technologies have given a new dimension to the energy sector. The key purpose of this study is to investigate the crucial impact of technological revolutions, namely, smart grids, smart devices, financial innovations, and environmental innovations, on greenhouse gas emissions (GHGs). To this end, the study utilized data from European, Asian, Middle Eastern, and African countries and employed first- and second-generation methods, such as DOLS, FMOLS, and CS-ARDL models. The research shows that smart grids are the only factor in reducing GHGs, regardless of geographic division. Hence, linking smart grid resources to climate change goals requires short-term deployment strategies with a clear long-term vision and the fundamental goal of transforming the power structure into a net zero-emission system. The study also demonstrates that the emergence of ICT in electricity consumption has not yet reached a level that can promote environmental excellence. The study documented the critical role of financial innovation and environmental innovation in addressing environmental degradation.


Assuntos
Carbono , Gases de Efeito Estufa , Desenvolvimento Econômico , Tecnologia , Mudança Climática , Dióxido de Carbono/análise , Energia Renovável
15.
Environ Sci Pollut Res Int ; 31(13): 19516-19542, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38355863

RESUMO

The construction of a pumped storage hydropower plant (PSHP) in an abandoned open-pit mine is a potential alternative to green mining and energy storage, which can increase the utilization rate of renewable energy and develop residual resources of abandoned mines. Dynamic surface subsidence affected by combined underground and open-pit mining (CUOPM) seriously affects the construction and operation of the PSHP and is one of the critical scientific issues that needs to be solved immediately. The stability of the PSHP was analyzed and treatment scheme of the goafs was proposed based on on-site measurement, theoretical analysis, and numerical simulation. First, the distribution of goafs in the Haizhou open-pit mining area was investigated and surface subsidence value was obtained using InSAR technology and ground monitoring. Secondly, the surface subsidence mechanism affected by CUOPM is analyzed and indicates the subsidence maximum values and scope of influence are greater than those of single underground mining. A dynamic surface subsidence prediction model for combined mining is established based on the Knothe time function model. Thirdly, based on the CVISC model, the numerical calculation models were established by using FLAC3D, and the characteristics and laws of surface subsidence in different periods of CUOPM were studied. The comparative analysis of the observation results shows that the proposed model and numerical simulation calculation method have excellent applicability and accuracy. Finally, a stability evaluation method of PSHP was established, and the results of the evaluation show that the affected areas are the semi-ground powerhouse (SGPH) and the west side of the lower reservoir. The method of grouting filling was used to treat the goafs, and the results showed that it effectively alleviates the dynamic surface subsidence affected by CUOPM, and provides a safety guarantee for PSHP.


Assuntos
Minas de Carvão , Mineração , Energia Renovável , Minas de Carvão/métodos
16.
Environ Sci Pollut Res Int ; 31(13): 19458-19477, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38358631

RESUMO

Using the QARDL approach and data from January of 2010 to May of 2022, we explore how renewable energy consumption affects CO2 emissions in the USA. Long-term analysis reveals a negative link between these variables, while only lower quantile levels show short-term statistical significance. Integrating technical innovation (measured by patents) in our QARDL model shows substantial reduction in CO2 emissions, with varying effects over time. Interestingly, only renewable energy consumption, not technical innovation, significantly impacts CO2 emissions at lower quantile levels. These findings emphasize the crucial role of renewable energy in reducing both short-term and long-term CO2 emissions and offer policymakers valuable insights for shaping effective energy strategies to combat emissions and promote sustainability in the USA.


Assuntos
Dióxido de Carbono , Desenvolvimento Econômico , Dióxido de Carbono/análise , Energia Renovável
17.
Environ Sci Pollut Res Int ; 31(13): 19423-19438, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38358634

RESUMO

The purpose of this paper is twofold: analyzing stationarity of energy consumption by source in the United States and studying their cycles and pairwise synchronization. We study a panel of nine time series of monthly energy consumption for the period 1973-2022. Four of the series (namely coal, natural gas, petroleum, and nuclear electric power consumption) are non-renewables, whereas the remaining ones (hydroelectric power, geothermal, biomass, solar, and wind energy consumption) are renewable energy sources. We employ a nonparametric, panel stationarity testing approach. The results indicate that most of the series may be trend-stationarity, with nuclear and geothermal energy consumption being the only exceptions. Additionally, a study on potential cycles in the series of energy consumption by source is carried out, and subsequently we analyze pairwise concordance between states of different energy sources and between states of energy sources and the business cycle. Significant correlations are detected in the latter analysis, which are positive in the case of fossil fuel sources and negative for two renewable sources, namely geothermal and biomass energy consumption.


Assuntos
Fontes Geradoras de Energia , Energia Geotérmica , Estados Unidos , Vento , Gás Natural , Eletricidade , Energia Renovável , Dióxido de Carbono/análise
18.
Environ Sci Pollut Res Int ; 31(13): 19615-19634, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38363502

RESUMO

Green innovations are the most critical factor in promoting environmental sustainability worldwide. Trade can speed up the adoption of green innovations by facilitating the transfer of information, skills, and technology. However, trade policy uncertainty can create significant challenges for businesses investing in eco-innovations, leading to increased risk, reduced investment, and slower progress toward sustainable technologies. Recently, a growing number of researchers have shown their interest in finding the factors that can impact green innovations, but none have investigated the influence of trade policy uncertainty on green innovations in the USA and China. In addition, none of the past studies has relied on the nonlinear assumption. This analysis fills these gaps by examining the nonlinear impacts of trade policy uncertainty on eco-innovations in China and the USA over 2000Q1-2021Q4 by employing a nonlinear ARDL model. The finding reveals that a positive shock in trade policy uncertainty results in a decrease in green innovation in the USA and China, while a negative shock in trade policy uncertainty leads to an increase in green innovation in the USA over the long run. The nonlinear models also indicate that a positive shock in trade policy uncertainty harms green innovation in both the USA and China in the short run. The robustness of these results is confirmed by the NQARDL model, which confirms that an upsurge in trade policy uncertainty lowers green innovation in most quantiles in the USA and China in the short and long run. Conversely, negative shocks in trade policy uncertainty stimulate green innovation at most quantiles in both China and the USA, in the short and long run. Thus, policymakers need to consider the potential impact of trade policies on eco-innovations and work to create stable and predictable trade environments that support the growth of renewable technologies and other sustainable solutions.


Assuntos
Comércio , Investimentos em Saúde , Incerteza , China , Políticas , Desenvolvimento Econômico , Dióxido de Carbono , Energia Renovável
19.
Environ Sci Pollut Res Int ; 31(13): 20343-20361, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38372919

RESUMO

Sub-Saharan African nations face multifaceted environmental problems, especially those associated with carbon discharges. Hence, this study calculates a composite carbon index in the context of 39 developing nations from this region and uses it as a proxy for the carbon emission-related environmental problems they have faced during the 2000-2020 period. This index is estimated by utilizing data regarding annual carbon dioxide discharges, output-based carbon productivity rates, and energy consumption-based carbon intensity levels in the concerned countries. Hence, policy takeaways from this study have critical relevance for the selected sub-Saharan African nations to help them achieve the objectives related to the Sustainable Development Goals agenda and the Paris Accord. Overall, the findings from the econometric analyses verify that more receipt of foreign direct investment initially raises but later on reduces environmental problems. Thus, the nexus concerning these variables depicts an inverse U-shape. Besides, the results endorse that greening the energy consumption structures of the sampled sub-Saharan African countries helps to abate their environmental problems in the long run while financial development aggravates the extent of environmental adversities that take place. Lastly, improving the quality of regulatory agencies enables the Sub-Saharan African nations to further mitigate their environmental problems. Moreover, these aforementioned findings are observed to be heterogeneous across low- and middle-income categories of the selected Sub-Saharan African countries. Furthermore, the heterogeneity of the findings is also confirmed by the outcomes derived from the country-specific analyses. Nevertheless, these nations should attract clean energy-embodying foreign direct investment, make their energy consumption structures greener by amplifying renewable energy adoption rates, introduce green funds to develop their financial sectors, and make their environmental regulatory agencies more transparent with their activities.


Assuntos
Países em Desenvolvimento , Desenvolvimento Econômico , África Subsaariana , Energia Renovável , Internacionalidade , Investimentos em Saúde , Dióxido de Carbono/análise
20.
Environ Sci Pollut Res Int ; 31(12): 18797-18812, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38349497

RESUMO

The Russia-Ukraine war and other similar conflicts across the globe have heightened risks to the United States of America's (USA's) energy security. However, little is known about the severity of the effect of energy security risks on the USA's quest to attain net-zero emissions targets by 2050. To this end, we examine the effect of energy security risks on the load capacity factor (LCF) in the USA. Employing a time series dataset spinning from 1970 to 2018, the results of the Dynamic Autoregressive Distributed Lag (ARDL) simulations model suggest that energy security-related risk hampers the long-term net-zero emissions targets with its effect decreasing over time until it varnishes in about 5 years time. The results also show that foreign direct investment (FDI) inflows, renewable energy consumption, and green technology have long- and short-run positive effects on the LCF. Conversely, economic expansion and urbanization impede environmental quality by lowering the LCF both in the long run and short run. These findings are upheld by the outcomes of the multivariate quantile-on-quantile regression. Therefore, the study advocates for the consumption of renewable energy, investment in green technologies, and FDI inflows to mitigate energy security-related risks and attain the net-zero emissions targets by 2050 in the USA.


Assuntos
Dióxido de Carbono , Desenvolvimento Econômico , Internacionalidade , Investimentos em Saúde , Energia Renovável
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