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    Analyzing transport demand and environmental degradation: the case of G-7 countries
    (Springer, 2024) Erdogan, Sinan; Sarkodie, Samuel Asumadu; Adedoyin, Festus Fatai; Bekun, Festus Victor; Owusu, Phebe Asantewaa
    The debate for green development has been ongoing in the energy and environment literature-especially initiatives to mitigate climate change. On this note, we explore the effects of the air and railway transport demand, fossil-fuel energy consumption, demographic policies, economic growth, and alternative energy consumption on environmental degradation in Group of Seven (G7) economies. Using robust panel estimation techniques that account for cross-sectional dependence, empirical results affirm the presence of long-run relationships among variables. Besides, the results give credence to the environmental Kuznets curve hypothesis (EKC) in G7 countries over the sampled period. We observe that demand for air transport, energy from fossil fuel sources, and economic development dampen environmental quality by 0.12%, 0.33%, and 46.54%, respectively. Interestingly, renewable energy and rail transportation demand improve environmental quality. This outcome resonates with the need for alternative and clean energy production and consumption (Sustainable Development Goals 11 and 12) while enhancing the fight against climate change-especially the adoption of clean energy technologies in the air transport sector for sustainable growth.
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    Testing the transport-induced environmental Kuznets curve hypothesis: The role of air and railway transport
    (Elsevier Sci Ltd, 2020) Erdogan, Sinan; Adedoyin, Festus Fatai; Bekun, Festus Victor; Sarkodie, Samuel Asumadu
    The airline and railway industry contribute immensely to economic development, however, its role in environmental pollution requires attention. Here, this study builds on the theoretical pedigree of the environmental Kuznets curve (EKC) hypothesis to explore the contribution of the air and railway transportation sector and urbanization to the emission-growth argument. We utilized annual time-frequency data from 1995 to 2014 for a panel of top 10 air passenger carrier countries using robust panel estimators that control for cross-section dependence. The empirical analysis shows a positive significant relationship between emissions and economic growth, thus, economic growth is emission-embedded with limited green growth. The existence of the EKC phenomenon is affirmed for the investigated blocs - where economic growth is prioritized over environmental quality. Additional, while air transportation drives pollution, railway transportation and urbanization decline emission over the sampled period. The results underscore the need for clean and environmentally friendly energy sources for air sector operations.