The ESRI Knowledge Base contains technical documents, downloads, and user discussions to help you find the answers you need. It delivers easy to use, map-like views of America's natural and sociocultural landscapes. National Geographic Map Machine - Lets you create and save your own customized maps including Degree of Ecosystem Threats, Annual Precipitation, Recent Earthquakes, Mineral Resources and of course, political maps. This is a compilation of web sites related to Remote Sensing. It contains links to useful remote sensing resources in the Internet, including lecture notes, tutorials, application notes, and FAQs on remote sensing, remote sensing missions, data sources as well as applications.
Membership includes the journal Wetlands.