We are experiencing rapid growth rate of urbanization, motorization and industrialization. Our overwhelming dependence on fossil fuel to drive our daily life and economic activities has led to releasing of various green house gases and air pollutants into the atmosphere resulting in degrading of the quality of air in the urban areas and global problem of climate change. Degrading of the quality of air in the urban areas has put at risk the lives of millions of people under direct threat due to health impacts associated with air pollution. According to estimation by the World Health Organization (WHO), about 530,000.
