From the poverty and exploding population of Bangladesh to the dazzling technology and aging population of Japan, from the largest states of India and China to the tiny state of Singapore and the emptiness of Siberia, Asia contains the greatest diversity of physical environments, cultures and levels of development of any continent. Any discussion of the geography of Asia must recognize and understand the national patterns of change which have generated this diversity. The contributors to this study address the causes and consequences of these changes, examining the problems caused by change in the environment and highlighting the areas which require more study. They discuss shifts in demography, in levels of development, and in the political structures that frame policy.