The world is losing species and biodiversity at an unprecedented rate. The causes go deep and the losses are driven by a complex array of social, economic, political and biological factors at different levels. Environmental biotechnology is concerned both with the implications and applications of biotechnology in the wider context of environment. On the other hands, efforts are being made to use biotechnology to protect the environment from pollution and to conserve natural resources. The present book is a compendium of wide ranging topics in various fields like biotechnological applications of algae, in vitro propagation of plant, strees responses, environmental impact of pesticides, biodiversity study, ethno botany and many others. Besides a few reeview articles, it encompasses almost all chapters dealing with the experimental findings, which will enhance the scientific temper among the students as well as researchers. This book would be informative to the students, teachers, scientists and researchers in the field of applied science.'