The World Bank collects a variety of data related to wealth distribution, poverty, and economic development across the globe. Start with these research reports and tools, then visit their website for more information.
The International Monetary Fund (IMF) website provides an excellent Introduction to Inequality, which covers the factors causing inequality; explains how it is measured; and explores the consequences of poverty. Proposals to fight inequality are discussed in these podcasts. The IMF's press conferences and other media events are available on video.
The Pew Research Center is a non-partisan fact tank that informs the public about the issues, attitudes, and trends shaping the world. The organization conducts public opinion polling, demographic research, content analysis, and other data-driven social science research, but does not take policy positions.
The Center has collected a variety of data about economic inequality in the United States. To read their reports, click the links below.