Based on The judgment of the supreme court of India and syllabus framed by University Grants Commission, this book has been written to understand the importance of Environmental science to students of all disciplines and common man who have moral responsibility towards the preservation of nature.This book deals with the concepts like Natural resources, Biodiversity Ecosystems, Conservation and protection. Pollution, Consumerism and recycling, Sustainable development, Green living, social issues of environment etc. This book has been written in simple and lucid language on a self-learning Style.Eventually this book would make the reader to get convinced that "The Mother earth has to support not only the human to- day but also the infinitive kinds of life in future and man has the moral responsibility to protect and conserve our mother nature" Addition of the objective type of questions with key in each chapter would be useful to evaluate the "learning outcome" of the reader.