This page from the GeoTech Center provides a link to an introductory textbook on Geographic Information Systems, or GIS. The textbook is freely available online. The text covers a general introduction to GIS, vector...

This post on the AmericaView Blog describes accessing Landsat data and using it in the ArcGIS program. The post includes a link to an instructional video which will show you how to access freely available Landsat...

Acid precipitation will be defined. At different points in the lesson students will write balanced reactions for the formation acid precipitation from atmospheric sulfur and nitrogen oxides and the neutralization of...

From 1938 to 1947, the United States Forest Service took thousands of aerial photographs of the state of Colorado. The hope was that these images would be used by agronomists, land use planners, farmers, and other groups...

Spatial data analysis is an important tool for geographers, planners, sociologists, and others, and this well-designed site by the Center for Geographic Analysis at Harvard University will be a real boon to anyone with...