About The book An environment is everything that is around us. It includes both living and non-living things. It plays a significant, decisive and critical role in the existence of life on the planet earth. The world is going through a serious environmental crisis. Human beings have much harmed to the natural environment through their actions. The most serious environmental problems of the 21st century have the potential to alter the course of life on this planet. Environmental pollution, global warming, climate change, ozone depletion, loss of biodiversity, ecological imbalance, unsustainable development, shrinking energy supplies etc. are some of the frightening challenges that may threaten our future, if we do not handle them seriously. The idea of environmental sustainability is the need of the hour to conserve the ecosystem. The book entitled ‘Environmental Sustainability in the 21st Century: Emerging Issues and the Way Forward’ represents the diverse issues, trends and challenges which are very much relevant to our environment in the 21st century. The book is divided into three sections: Natural Environment and Sustainability; Environmental Challenges in the Present Context; and Environmental Management and Practices. In this book total 24 chapters have been presented to depict the major concerns related to environment and its sustainability. About The Editor Dr. Ranjan Sarkar, M.A. (Geography & Applied Geography) Gold Medalist, B.Ed., M.Ed., N.E.T., Ph.D. (Geography & Applied Geography), is an eminent academician. He has completed his M.A. Degree in Geography & Applied Geography from the University of North Bengal, Siliguri, West Bengal, India, in the Year 2003 and secured 1st Class 1st Position. He has Successfully qualified U.G.C. (University Grants Commission)-N.E.T. in June,2004. He also obtained B.Ed. and M.Ed. degrees. He has been awarded Ph.D. Degree in Geography & Applied Geography from the University of North Bengal.