Environmental Science is a multidisciplinary science comprising various branches of studies such as chemistry, physics, medical science, life science, agriculture, public health, sanitary engineering etc. Environmental science analyses causes and effects of climate and global warming and includes study of recycling and reuse of resource. It encompasses the air, water and soil etc. and the impact of human activities on them and addresses the approach towards sustainable development. Fast growth in urbanization and industrialization during last few decades have resulted in depletion of natural resources, degradation of environmental and pollution of air, soil and water. Therefore, it is necessary to think about the problems related our environment and their solutions for its betterment. This book is divided into two Sections: section I includes research papers by various scientists and research scholars and Section II reviewes papers/articles by various academicians. We hope that this book would be able to motivate the students, academicians and scientists about different issues related to environmental science and technology.