Abstract

CO2 emissions and climate change have become a topic of global importance for the international community which should have led to immediate action to remedy this dangerous situation The main objective of this work is to identify the causes and factors that can contribute to the reduction of CO2 emissions in the transportation sector The estimation method based on Panel data for 25 countries around the world has shown that the density of the urban population and the heavy use of private vehicles in many metropolitans are the main causes of CO2 emissions We have demonstrated that the development of renewable energies the development of collective transport systems and sustainable forest management practices are concrete and practical solutions to fight against CO2 emissions in megalopolises