Faculty News

Professor Paul Romer discusses urban expansion in Colombia

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Excerpt from Portafolio -- "We tell officials in rapidly growing cities that they have to set aside now the public space in the area where the city is likely to expand. To stay ahead of rapid growth, the city needs to look far into the future. We encourage cities today to plan for the expansion that will take place between now and 2050 under a fast growth scenario. If the city is growing rapidly, this can require a plan that could accommodate a 10-fold increase in the city’s built area. The land can continue to be farmed until the expansion comes. If there is less growth and the city does not need all this land for urban expansion, there is virtually no cost to having planned for too much. In contrast, if a city does not plan for enough and it suffers from disorganized informal development, the cost is very high."

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