To provide roads linking rural production to urban markets in the coastal zone of West Africa that represent an important exposed infrastructure asset.

To provide a global data set of average summer daytime maximum/nighttime minimum land surface temperatures (LSTs) for urban extents, as well as the LST difference between the urban area and the buffer.

To provide urban land use and informal settlements for the years 1982, 1992, 1998, and 2002 in Dar es Salaam, Tanzania.

To provide a global data set of point locations and attributes describing nuclear power plants and reactors.

To provide an easily accessible, corrected data set of polygons for hazardous waste sites in the United States which can be used to identify nearby populations and assess their potential risk.

To provide an open access, well documented global data set of roads between settlements using a consistent data model (UNSDI-T v.2) which is, to the extent possible, topologically integrated.

To provide a geographically explicit and reliable database of dams for the scientific community.

To provide a geographically explicit and reliable database of reservoirs for the scientific community.

To provide the ATSDR polygon data set of hazardous waste sites in the United States, Puerto Rico, and other territories which can be used to identify nearby populations and assess their potential risk.

To provide a set of coastlines consistent with GPWv3 raster data for cartographic purposes.

To provide a quantitative measure of the input resolution of administrative units used for GPWv3.

To provide a vector (point) version of the input administrative units used in GPWv3 for use in data integration.

To provide county-level social information of China in a series of tables from the China Provincial Economic Yearbook data for 1990 and 1991.

To provide fundamental GIS maps of China, and neighboring countries and regions.

To provide information of geographical locations, areas, administrative division codes, and names for the administrative regions of China.

To provide information on the geographical locations, areas, administrative division codes, and names of the administrative regions of China.

To provide county and state boundary data for the U.S.

To provide an authoritative boundary layer for the geographies associated with the Public Use Micro Sample (PUMS) data files.

To provide an urban place GIS coverage of Mexico.