and then evaluates them with real world data, so as to verify their applicability. A number of his papers in applied economics are co-written with his Harvard colleague, Andrei Shleifer. In 2006, Glaeser began writing a regular column for the New York Sun. He writes a monthly column for The Boston Globe. He blogs frequently for The New York Times at Economix, and he has written essays for The New Republic. Although his most recent book, Triumph of the City (2011), celebrates the city, he moved with his wife and children to the suburbs around 2006 because of "home interest deduction, highway infrastructure and local school systems". He explained that this move is further "evidence of how public policy stacks the deck against cities. [B]ecause of all the good that comes out of city life—both personal and municipal—people should take a hard look at the policies that are driving residents into the suburbs. Contribution to urban economics and political economy Glaeser has published in leading economic journals on many topics in the field of urban economics. In early work, he found that over decades, industrial diversity contributes more to economic growth than specialization, which contrasts with work by other urban economists like Vernon Henderson of Brown University. He has published influential studies on inequality. His work with David Cutler of Harvard identified harmful effects of segregation on black youth in terms of wages, joblessness, education attainment, and likelihood of teen pregnancy. They found that the effect of segregation was so harmful to blacks that if black youth lived in perfectly integrated metropolitan areas, their success would be no different from white youth on three of four measures and only slightly different on the fourth. In 2000 Glaeser, Kahn and Rappaport challenged the 1960s urban land use theory that claimed the poor live disproportionately in cities because richer consumers who wanted more land chose to live in the suburbs where available land was less expensive. They found that the reasons for the higher rate of poverty in cities (17% in 1990) compared to suburbs (7.4%) in the United States were the accessibility of public transportation and pro-poor central cities' policies which encouraged more poor people to choose to move to and live in central cities. He reiterated this in an interview in 2011, "The fact that there is urban poverty is not something cities should be ashamed of. Because cities don't