The present book provides consolidated information on each and every aspect of the environment. The book comprises 12 chapters opening with the introduction and importance of environmental sciences, then physics of natural resources, structure and functions of ecosystem, biodiversity and conservation, environmental pollution, environmental impact assessment, human population and environment, waste pollution and management, environmental laws, social issues, global warming and concludes with the carbon credits. The book provides in-depth information on types of natural resources and associated problems, biogeographical classification of India, sources and effects of different kinds of pollution, methodology of environmental impact assessment, environmental and human health, hazardous waste management and treatment technologies.