2011 research from the University of Pennsylvania on the personal and community benefits of creating more green spaces in urban areas.

2009 study from the National Institute of Diabetes and Digestive and Kidney Diseases published in PLoS ONE assessing the U.S. food supply, consumption and waste.

2011 paper in The American Law and Economics Review on youth curfews and crime rates.

2011 paper by the National Bureau of Economic Research on the conditions that make special municipal tax deals likely and their association with political corruption.

2011 study by Columbia University’s Earth Engineering Center on the energy contained in discarded plastics and its economic value.

2009 metastudy from the University of Barcelona published in Clinical Psychology Review analyzing 65 research studies across 22 countries to estimate an “overall international figure” for such abuse.

2010 study in Political Behavior examines public opinion survey data on immigration rhetoric and policy preferences among Iowa caucus-goers.

2010 study in Political Behavior on why pre-election polls in contests involving female candidates often do not accurately predict actual election outcomes.

2011 article by the NYU Brennan Center for Justice on the potential impacts of voting-law changes on the 2012 election.

2011 World Bank paper on a new theory of economic development emphasizing both industrial improvements and country-specific flexibility.