CIESIN’s mission is to provide access to and enhance the use of information worldwide, advancing understanding of human interactions in the environment and serving the needs of science and public a...

The China Historical Geographic Information System (CHGIS) project was launched in January 2001 to establish a database of populated places and historical administrative units for the period of Chi...

Historical map collection including rare 16th through 21st century maps.

The Digital Atlas of Roman and Medieval Civilization (DARMC) makes freely available on the internet the best available materials for a Geographic Information Systems (GIS) approach to mapping and s...

Empire Online spans five centuries, charting the rise and fall of empires around the world. It provides exploration of colonial history, politics, culture, and society. Key features include: tens o...

GeoGratis is a portal provided by the Earth Sciences Sector (ESS) of Natural Resources Canada (NRCan) which provides geospatial data at no cost and without restrictions via your Web browser. The da...

GeoScience Australia's spatial information activities focus on providing key spatial information of Australia with an emphasis on response to rapid and slow onset hazards, the detection of change, ...

LandScan is a global population database that shows geographical distribution of population at one-kilometer resolution over an average 24 hour period. The LandScan algorithm uses spatial data and ...

Use The National Map Viewer and Download Platform to visualize, inspect, and download the most current topographic base map data and products for free. Managed by the United States Geological Surve...

The Geospatial Data Gateway is a service made available through a close partnership between the three Service Center Agencies (SCA); Natural Resources Conservation Service (NRCS), Farm Service Agen...

The Perry Casteñeda Library Map Collection provides online access to digital versions of all Central Intelligence Agency (CIA) reference and thematic maps. Army Map Service (AMS) topographic map se...

Web-based mapping application that lets users create professional-quality thematic maps and reports using demographic, business, and marketing data.

Since 2004, WisconsinView has made aerial photography and satellite imagery of Wisconsin available to the public for free over the web. As part of the AmericaView consortium, WisconsinView supports...

This encyclopedia includes 360 articles that cover the field of quaternary sciences. Quaternary science is an inter-disciplinary field of study focusing on the Quaternary period, which encompasses ...

The ESRI GIS Bibliography covers the literature of geographic information systems, science, and technology from the origins of GIS to the present. It references thousands of sources, including jour...

The Food and Agriculture Organization for the United Nations and its 187 members highlight information as one of the priority areas in fighting hunger and achieving food security. The FAO Country P...

Geology database (ProQuest) that covers earth sciences literature. In addition to journal articles, includes conference papers, guidebooks, maps, reports, theses, and selected books.

The International Encyclopedia of the Social & Behavioral Sciences is a fully revised and updated second edition of the 2001 publication. It includes nearly 4000 articles curated by 71 section edit...

Archive of scholarly journals and ebooks in the humanities, social sciences, sciences and mathematics. Journal coverage is volume 1 of each title until 3-5 years ago (embargo period varies by title).

Journal articles, conference proceedings, books, and technical reports in the fields of meteorology, climatology, physical oceanography, hydrology, glaciology, and atmospheric chemistry and physics.

Within NCEI, there is access to various data holdings from the Center for Weather and Climate, Coasts, Oceans, and Geophysics. Land-based, marine, model, radar, weather balloon, satellite, paleocli...

Large, multidisciplinary database that covers science, technology, medicine, social sciences, and arts and humanities. Includes tools to track, analyze, and visualize research.

Water Resources Abstracts is now part of the Agricultural and Environmental Science Database. This database provides summaries of the world's technical and scientific literature on water-related t...

Collection of databases that index scholarly literature in the sciences, social sciences, arts, and humanities from journals, conference proceedings, symposia, seminars, colloquia, and workshops.