U.S. incarceration and correctional population levels: U.S. Justice Department
2011 reports from the U.S. Department of Justice with census of imprisoned and paroled persons.
guns
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Analysis of health, safety and greening vacant urban space
2011 research from the University of Pennsylvania on the personal and community benefits of creating more green spaces in urban areas.
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United Nations 2011 global study on homicide
2011 U.N. report on rates of homicide per capita in 207 countries based on data from the World Health Organization, the Global Burden of Injuries Project; and other sources.
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Sexual identity and health-risk behaviors among students in grades 9-12
Study by the Centers for Disease Control and Prevention on health risks among gay, lesbian and bisexual teens.
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U.S. Government Accountability Office: 2011 report on criminal alien statistics
2011 GAO report on criminal activity by undocumented immigrants, their nationality and the estimated costs of such criminality to the United States.
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Firearm ownership and homicide across the United States
2002 study published in the American Journal of Public Health on the relationship between firearm-ownership rates and homicide rates.
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