Synopsis The twenty first century is likely to pose before us serious environmental challenges. Our faith in modern technology has eroded the ecological foundations of our civilization. The future of the human civilization shall be rosy if natural resources are used prudently. We need growth without eco-disasters. The book contains review and research papers. Section A covers papers related to environmental scenario for 21 century. While section B deals with papers contributed on specialised aspects. This is a sincere effort to provide up-dated information so that we can marshal our resourcefulness.