Amuka, Joseph I., Fredrick O. Asogwa, Romanus O. Ugwuanyi, Ambrose N. Omeje, and Tochukwu Onyechi. 2018. “Climate Change and Life Expectancy in a Developing Country: Evidence from Greenhouse Gas (CO2) Emission in Nigeria”. International Journal of Economics and Financial Issues 8 (4):113-19. https://www.econjournals.com/index.php/ijefi/article/view/6552.