US Geological Survey
Us Geological Survey: Glaciers and Glaciations
Follow the links to learn about snow accumulation, mass, balance and flow of glaciers. Find the cause of glacial decline.
NASA
Nasa: At the Edge: Monitoring Glaciers to Watch Global Warming
Learn why scientists have been observing glaciers since before global warming came into the forefront. Learn about the different types of glaciers and the ways to monitor them. Some of the information may be dated. (April 14, 1999)