This book presents a comprehensive text for undergraduate students of engineering for their core course in Environmental Science and Engineering and for elective courses in Environmental Pollution, Environmental Health and Environmental Engineering. It introduces the reader to different areas of ecology, environmental science and engineering. Furthermore, the concept of social issues and the environment have also been discussed. It covers a wide range of topics such as energy, global environmental problems, solid waste management, air pollutants and their effects, water pollution and their effects, soil pollution and noise pollution.