This book covers themes related to the geosphere, biosphere, sociosphere and ecosphere dealing with changing geographical, environmental and socio-economic realities to plan a sustainable future for the northeast region (NER) of India. The NER consists of eight states—Assam, Arunachal Pradesh, Tripura, Nagaland, Manipur, Mizoram, Meghalaya and Sikkim—and they carry political, economic and social importance. The book integrates the past, present and future of geospheric attributes incorporating progress towards the Sustainable Development Goals (SDGs) to meet the demands for improving...