• Does renewable energy consumption and health expenditures decrease carbon dioxide emissions? Evidence for sub-Saharan Africa countries.

      Apergis, Nicholas; Jebli, Mehdi Ben; Youssef, Slim Ben; University of Piraeus; University of Jendouba; University of Manouba (Elsevier, 2018-05-14)
      This paper employs panel methodological approaches to explore the link between per capita carbon dioxide (CO2) emissions, per capita real gross domestic product (GDP), renewable energy consumption, and health expenditures as health indicator for a panel of 42 sub-Saharan Africa countries, spanning the period 1995–2011. Empirical results support a long-term relationship between variables. In the short-run, Granger causality reveals the presence of unidirectional causalities running from real GDP to CO2 emissions, to renewable energy consumption, and to heath expenditures, and bidirectional causality between renewable energy consumption and CO2 emissions. In the long-run, there is a unidirectional causality running from renewable energy consumption to health expenditures, and bidirectional causality between health expenditures and CO2 emissions. Our long-run elasticity estimates document that both renewable energy consumption and health expenditures contribute to the reduction of carbon emissions, while real GDP leads to the increase of emissions. We recommend these countries to pursue their economic growth and invest in health care and renewable energy projects, which will enable them to benefit from their abundant wealth in renewable energy resources, improve the health conditions of their citizens, and fight climate change.
    • The dynamic linkage between renewable energy, tourism, CO2 emissions, economic growth, foreign direct investment, and trade.

      Apergis, Nicholas; Jebli, Mehdi Ben; Youssef, Slim Ben; University of Piraeus; University of Jendouba; University of Manouba (Springer Open, 2019-02-19)
      Because of the lack of econometric studies in relevance to the link between tourism and renewable energy, the goal of this study is to remedy this lack and to explore the causal relationship between renewable energy consumption, the number of tourist arrivals, the trade openness ratio, economic growth, and carbon dioxide (CO2) emissions for a panel of 22 Central and South American countries, spanning the period 1995-2010. The empirical findings document that the variables under investigation are cointegrated, while short-run Granger causality tests illustrate unidirectional causalities running from: i) renewable energy to CO2 emissions and trade; ii) tourism to trade; and iii) economic growth to trade and tourism. In the long-run, there is evidence of bidirectional causality between renewable energy consumption, tourism, trade openness and emissions. Thus, renewable energy and tourism are in a strong long-run causal relationship. Moreover, long-run fully modified ordinary least square (FMOLS) and dynamic ordinary least square (DOLS) estimates highlight that tourism and renewable energy contribute to the reduction of emissions, while trade and economic growth lead to higher carbon emissions. Therefore, encouraging the use of renewable energy and tourism developments, particularly green tourism, are good policies for this region to combat climate change.