As we enter the third millennium, humanity is faced with a huge challenge. Climate change, bio-diverstiy, desertification, threatening food security and increasing pollution are the major threats to the future. Natural resources, both on land and water, are increasingly in demand to cater to the human needs and expectations. There has been significant damage resulting through pollution from various human activites. There is an urgent need for meaningful and co-ordinated environmental management, whereby capacity building can be strengthened and a symbiotic partnership between human beings and the environment be established. This book highlights critical environmental issues, and touches upon various environmental pollution with focus on the causes, sources and remediation. The emphasis has been laid on key environmental management strategies to combat the menace caused by various pollutants, and also to be prepared in advance to tackle the effects of such pollutants as well as natural hazards. About Author : Dr. Padmanabh Dwivedi, M.Sc. (BHU GOLD MEDAL), Ph.D.(Cambridge), is a Lecturer in Botany, Arunachal University, Itanagar. He has outstanding academic career throughout. He has received several national and international scholarships and awards including Young Scientist Award of Council of Science and Technology, Govt. of U.P., Cambridge, Nehru Scholarship, UNESCO/ Czech Academy of Sciences Fellowship, Oversears Research Studentship Award of the U.K., INSA Visiting Fellowship, Downing Muller Scholarship of Cambridge. Dr. Dwivedi, has presented research papers in eight international conferences, six being abroad. He has several publications in refereed journals of national and interantional repute. Dr. Dwivedi is the Principal Investigator of teh DBT-sponsored major research project. He has wide Educational Administrative experience including Editor-in-Chief of teh Arunachal University Research Journal. Dr. Dwivedi has visited sev