2012 Pew Center on the States report on incarceration rates in the United States, strategies and costs they impose, from 1990 to 2009.
2012 study from Duke and Vanderbilt based on survey data to examine the effects of different recycling regimes on the recycling rates for plastic water bottles.
2012 report from the Congressional Research Bureau on the history and current severity of U.S. national and regional droughts, including policy responses.
2012 study in Political Communication on political public relations effects, journalists' response, and the press coverage that results.
2012 study by the Pew Research Center on shifts in American political values, including politics, business, immigration and religion, from 1987-2012.
2008 study in Economics & Politics on how the theory of the balance of powers plays out at the state level, and how partisan influence can change dynamics.
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2012 Pew Research survey looking at variation in citizen assessments of government at different levels, and partisan divides in the United States.
2012 study from Princeton University on the number of uninsured Americans who might participate in reform efforts.
2012 report from the federal government on the solvency and long-term forecasts of entitlement programs in the United States.
2011 paper published in Real Estate Economics on subprime and non-traditional mortgages, home prices and default rates.