Gabriel Ahlfeldt, Daniel McMillen, 04 November 2017

Cities around the world are experiencing unprecedented vertical growth, but there has been little study of the economics of tall buildings. This column summarises novel evidence on the determinants of the urban height profile and the cost of building tall, and derives implications for urban theory and policy. In contrast to standard urban economics models, there is a role for the supply side in determining horizontal land use patterns. Vertical expansion is unlikely to resolve affordability problems in growing cities.

Trevon Logan, John Parman, 09 March 2015

Racial disparities in socioeconomic conditions remain a major policy issue throughout the world. This column applies a new neighbour-based measure of residential segregation to US census data from 1880 and 1940. The authors find that existing measures understate the extent of segregation, and that segregation increased in rural as well as urban areas. The dramatic decline in opposite-race neighbours during the 20th century may help to explain the persistence of racial inequality in the US.

Edward Glaeser, 05 September 2008

Edward Glaeser of Harvard University talks to Romesh Vaitilingam about the lessons from his research on how falling costs of communication and transportation have been kind to idea-producing cities like New York, Boston and London and devastating to goods-producing cities like Cleveland, Detroit and Glasgow. The interview was recorded at the American Economic Association meetings in New Orleans in January 2008.

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