Hosted by NASA's Socioeconomic Data and Applications Center (SEDAC) and Columbia University's CIESIN (Center for International Earth Sciences Information Network); provides access to data on sustainability, the environment, and human impact.
Database of social, economic, environmental, and political indicators compiled by the World Resources Institute. *This is no longer being updated but still has useful source information.*
Geospatial datasets plus many household surveys on food and nutrition, institutional surveys on pricing and production, and social accounting matrices across many countries.