id author title date pages extension mime words sentences flesch summary cache txt cord-005189-z92vwovw Saier, Milton H. Are Megacities Sustainable? 2006-07-28 .txt text/plain 1850 111 58 Increasing numbers of people are moving to cities, causing urban populations to expand. Moreover, the primary product produced by a particular urban population may result from the presence of a single company, and its presence in that city reflects the decisions of just a few executives. This tremendous rise results both from astronomical global birth over death rates and from the migration of rural populations to the cities. Moreover, about 1% of the world_s rural population moves from the country to the cities every two years. The sudden loss of a city_s infrastructure due to a natural or man-created disaster would be expected to promote human suffering of a magnitude that far surpasses anything that could have occurred in the past with a less centralized population living in a rural setting. Past examples of urban disasters abound: The great San Francisco earthquake and fire of 1906 caused thousands of deaths and tremendous loss of property. ./cache/cord-005189-z92vwovw.txt ./txt/cord-005189-z92vwovw.txt