Cities are one of the most complex creations of humanity, they are dynamic and present social and environmental challenges to their inhabitants. At the same time, megacities are financial and industrial core of several countries and provide the majority of the GDP. In megacities there is a wide diversity of individuals living together each with their own reasons, each of them belonging to different ethnic, cultural and social groups. The gap between these individuals is further expanded due to difference is economic and financial status, education, physical infrastructure and governmental systems. These high concentrations of individuals in urban areas bring the necessary risks, as they are often stricken by social inequality, environmental decline and poverty. Intensive human activities and population density increase the risk on manmade and natural disasters. Megacities in distinctive continents worldwide all demonstrate the pattern that poor representative governance, lack of urban forecast and planning to ensure the availability of sanitation and power provision all endanger the quality of life of its inhabitants. Particularly in megacities in developing world, governmental entities should stimulate active participation as individuals of distinctive groups can assist in providing insight and practical solutions on issues they are dealing with.