This book focuses on the socio-economic and sustainability challenges facing megacities in dealing with the dramatic population increases of informal areas and settlements (or slums), especially when coupled with the impacts and risks of climate change. The authors examine informal urban areas globally and in developing countries utilizing strategic environmental assessment (SEA) as a tool to solve the sequence of upgrading steps concerning slums and shanty towns, and also establish essential guidelines for local governments and stakeholders to create a balance and quality of life for slums...