The book covers 31 major topics of environmental studies & disaster management, i.e. definition, scope and importance of environmental studies. Natural resources (Renewable and non-renewable resources) and associated problems, the role of an individual in conservation of natural resources, equitable use of resources for sustainable lifestyles. Concept of an ecosystem, structure and function of an ecosystem, energy flow in the ecosystem, ecological succession, food chains, food webs and ecological pyramids. Biodiversity and its conservation, biogeographical classification of India, the value of biodiversity, biodiversity at global, national and local levels, hot-spots of biodiversity, threats to biodiversity, in-situ and ex-situ conservation of  biodiversity. Environmental pollution- Air pollution, water pollution, soil pollution, marine pollution, noise pollution, thermal pollution, nuclear hazards - definition, cause, effects and control measures, solid waste management, the role of an individual in prevention of pollution and pollution case studies. Social issues and the environment, environmental acts and public awareness, Human population and the environment. Natural disasters- meaning, nature, their types and effects. Manmade disaster - meaning, nature, their types and effects. Disaster effect and management at national and global levels.