Textbook of Environmental Science and Technology has become an essential branch from primary education to higher education. Both economic and social development are vital for over all development of any country. This type of sustainable development involves environmental protection in terms of saving forest life, guarding biodiversity, adopting water resources management, arresting pollution, controlling world population and developing eco-friendly technologies. This book focuses on natural resources, eco-systems, biodiversity, environmental pollution, solid waste management and watershed management in addition to the social issues. This book is mainly intended as a textbook for students of science and engineering. Features: Review questions are provided at the end of each chapter. A chapter on regional and sectorial issues is added. A new chapter on geoinformatics for solving environmental problems is covered.