The United States Global Change Research Program (USGCRP) was created as a high-priority national research program to: address key uncertainties about changes in the Earth's global environmental system, both natural and human-induced; monitor, understand, and predict global change; and provide a sound scientific basis for national and international decision-making. Some of the global change issues ... Full description.

This glossary is a compilation of hydrologic terms previously defined in published USGS reports. Full description.

This site provides a searchable database of NASA's Earth science-related images, animations, and data visualizations. Categories include agriculture, atmosphere, biosphere, cryosphere, human dimensions, hydrosphere, land surface, oceans, and solid earth. Images may be browsed by subject, location, or satellite sensor. Each image is accompanied by a description, background information, and explanation ... Full description.

This web site provides resources to integrate math and environmental science using real environmental data. The site features many data sets which are ideally suited for use as a classroom exercise. The data sets are sorted by topics, such as ecology, energy, air pollution or water resources. The data is also sorted by type, such as linear scatterplot, histogram, or exponential. With each data set ... Full description.

The Long Term Ecological Research (LTER) Network is a collaborative effort involving more than 1100 scientists and students investigating ecological processes over long temporal and broad spatial scales. The studies include topics such as hydrology, metabolic rate of ecosystems, global change research, and climate data. Currently there are 24 LTER sites located in various ecosystems across the globe, ... Full description.

This site contains slide shows and virtual field trips of Yellowstone National Park. There are several slide shows to chose from, including wolves of Yellowstone, bear research, fire ecology, the history of Yellowstone and the influence of art on Yellowstone Park. Each program features slides containing text and photographs. There is also an orientation slide show about the National Park system. More ... Full description.