Databases A-to-Z: U

compiles and disseminates global statistical information, develops standards and norms for statistical activities, and supports countries’ efforts to strengthen their national statistical systems; publications include the UN Demographic Yearbook and the UN Statistical Yearbook

leading source of quality data about the nation's people and economy

a consolidation and codification by subject matter of the general and permanent laws of the United States

provides impartial information on the health of our ecosystems and environment, the natural hazards that threaten us, the natural resources we rely on, the impacts of climate and land-use change, and the core science systems that help us provide timely, relevant, and useable information

electronic information resources on a wide range of topics including several useful databases such as Medline / PubMed

Supreme Court opinions

U.S. government's official guide to government information and services