GGRA03H3 Lecture Notes - Lecture 5: Megacity, John D. Kasarda, United Nations Department Of Economic And Social Affairs
Document Summary
In the past various definitions, including 4m (dogan and kasarda 1988), 8m (richardson. 1993, gilbert 1996), 10m (ward 1990, undesa 2008) There is no reason to think that there is a qualitative difference between cities of 8 or. There clearly is a difference between cities of 1m and 8-10m. What urban issues are likely to be impacted by very large size: congestion. As cities get larger, growth happens in the edges: travel issues, pollution, poverty and social inequalities. Exists in larger cities, or simply more: larger housing problems for the poor, water. Megacities now contain about 9% of world urban population. Rapid growth of number of megacities, 2 in 1950, by 1975 mexico city was third, by. 2007, there was 19 including 15 in developing countries. In 2025, it is projected that there will be 28, with 22 in developing countries. This is clearly an increasingly important share of total urban population.
