This book will provide the fundamental knowledge of environmental crises in megacities. Different anthropogenic activities cause diverse types of pollution in the environment. Various forms of pollution like water, air, soil and plastic pollution will be part of this proposed book. Solid waste management in megacities is also a big challenge due to the production of an enormous amount of soil waste. This book will provide information about the various types of solid waste and their management in megacities. The energy crisis is also a big challenge in megacities. This book deals with the energy crisis in megacities and their green alternatives. Climatic driven disasters also are part of this book. This book also deals with the health hazards due to the changing climatic condition in megacities. Graduate, undergraduate students, researchers working on environmental issues are the primary audience of this book. Scholars working in solid waste management and energy management also be the primary audience of this book. NGOs working in disaster management will also be beneficial to this proposed book. Acamedecians and policymakers will also get benefit from this book.