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Pew Research Center - reports about issues, attitudes and trends shaping America. Public opinion polling, demographic reserarch and other empirical social science research.http://www.pewresearch.org/
RAND Corporation - helps to imporve policy and decisionmaking through research and analysis. Focuses on the issues that matter most such as health, education, national security, international affairs, law and business, the environment, and more.http://www.rand.org/