Development, in its contemporary accomplishments has acquired both ecological and technological dimensions. In place of ?development?, ?sustainable development is being vehemently emphasized now. as ozone layer depletion, green house effect, physical, chemical and nuclear pollution of environment and the like issues have threatened the human survival. These issues are of grave concern and are being debated globally. The present treaties is the collection of learned articles, contributed by eminent academics, scholars and scientists in the field. The main themes dealt herein are: Theoretical and strategical framework, developmental policy implications, contemporary directions, and sustainable development in Arunachal perspective. This work is multi-dimensional in approach and is likely to prove useful for scholars, and researchers in social sciences as well as pure sciences besides the administrators and policy-planners.