The term ‘urbanization’ conjures up a number of different images—growth of urban population, transformation of villages into cities, agglomeration of industries, unemployment, crime, proliferation of slums, air-pollution, concerns about the provision of civic services, ethnic diversity (sometimes leading to conflicts) and many others. One of the aspects of urbanization which has the most direct and immediate impact on people’s lives is that of physical movement of population—sometimes out of compulsion - and their subsequent resettlement. The 2009 Human Development Report, the flagship publication of the United Nations Development Program (UNDP), presents some remarkable statistics on people’s flows. Contrary to common perception, most movement in the world does not take place from developing to developed countries, or even between countries, but within the borders of their own country. According to the report, of the nearly 1 billion movers in the world, 740 million are internal migrants, mainly from rural to urban areas. Internal migration is obviously the main driving force behind the world’s population becoming more urban than rural as of 23 May 2007.