Maintained by: The Center for International Earth Science Information Network (CIESIN), Columbia University. The WDC for Human Interactions in the Environment is collocated with the NASA EOSDIS Socio-economic Data and Applications Center (SEDAC).

Summary of Data Held: The following categories of data are maintained by or accessible through CIESIN:
Population
Administrative boundaries
Policies and institutions

In addition, CIESIN makes the following datasets available:
Gridded Population of the World
Global Population Database
World Resources 1996-97
Social Indicators of Development
China Dimensions Data Collection
Georeferenced Population Data Sets of Mexico
Archive of Census Related Products
Public Use Microdata Samples
GIS Coverage of Mexican States, Municipalities, and Islands

User Services: WDC for Human Interactions in the Environment is located at CIESIN's offices at Lamont Doherty Earth Observatory, Palisades, NY. Open to visitors during normal working hours. Advance notice is recommended. CIESIN's User Services staff (ciesin.info@ciesin.org, +1 914 365 8920) provide assistance for users of the WDC. Data are provided primarily online in digital form. Where practicable, data are made available in other media, such as floppy disks, CDROM and printed copy.