?Environmental Science? is an audit course for the first year Diploma programme in Engineering & Technology. Syllabus of this book is strictly aligned as per model curriculum of AICTE, and academic content is amalgamated with the concept of outcome- based education. Book covers four units- Ecosystem, Air and Noise Pollution, Renewable Sources of Energy and Solid waste management, ISO 14000 & Environmental Management, every unit contains as set of exercise at the end of each unit to test the student?s comprehension. Some salient features of the book: Content of the book aligned with the mapping of Course Outcomes, Programs Outcomes and Unit Outcomes. Book provides lots of recent information, interesting facts, QR Code for E-resources, QR Code for use of ICT, projects, group discussion etc. Student and teacher centric subject materials included in book with balanced and chronological manner. Figures and tables are insert to improve clarity of the topics. Objective questions, Short questions and long answer exercise given for practice of students after every unit. Table of content Foreword, Acknowledgement, Preface, Outcome Based Educations, Course Outcomes, Abbreviations and symbols, List of Figures, Guidelines for Teachers, Guidelines for Students, Unit 1: Ecosystem Unit 2: Air and Noise pollution Unit 3: Renewable sources of Energy Unit 4: Soil waste Management, ISO 14000& Environmental management. Important Day Related to Environment CO and Po Attainment Table Index.