“…De Bruyn et al (1998) also provide evidence of the existence of the EKC hypothesis for the Netherlands, the UK, the USA, and Western Germany, and Galeotti and Lanza (1999) do so for 110 countries. More recently, several studies used more complex statistical methods to test the EKC hypothesis without finding qualitatively different results (Halkos and Tsionas, 2001;Bertinelli and Strobl, 2004;Martinez-Zarzoso and Bengochea-Morancho, 2004;Bradford et al, 2005;Liu, 2005;Vollebergh et al, 2005;Galeotti et al, 2006;Song et al, 2008;Fodha and Zaghdoud, 2010;Shahbaz et al, 2013;Bassetti et al, 2013;Aeknarajindawat, Suteerachai and Suksod, 2020;Bekun, Agboola and Joshua, 2020;Rana and Sharma, 2019;Rauf et al, 2018;Wasti andZaidi, 2020 andZambrano-Monserrate et al, 2016). On the other hand, several studies find limited evidence of the presence of EKC for CO 2 emissions (e.g., Dinda, 2004;Tol et al, 2009;He and Rickard, 2010;Wang et al, 2011;Adedoyin, Awosusi and Adeshola, 2020;Dogan and Inglesi-Lotz, 2020;Koc and Bulus, 2020;Mikayilov, Galeotti and Hasanov, 2018;Sarkodie, 2018 andWang et al, 2019).…”