This Web site brings together scientific content on Earth and space sciences with interdisciplinary content on the arts and humanities. Three levels of content are provided: students (K-12 through undergraduate), teachers, and browsing adults. The site includes documents, images, movies, animations, sounds, games, and data. Full description.

The Natural Resources Conservation Service (NRCS) installs, operates and maintains an extensive, automated system to collect snowpack and related climatic data in the western United States called SNOTEL (for SNOwpack TELemetry). SNOTEL sensors collect hourly data on temperature, precipitation and snow water equivalent. Data can be displayed as tables or graphs for individual stations, drainage basins ... Full description.

From space, we can understand fires in ways that are impossible from the ground. New Earth-observing satellites capture the significant impact of fires on our planet. In this animation of fires around the globe in 2002, each red dot marks a new fire. Dots change color to yellow after a few days and to black when fires burn out. From brush fires in Africa to forest fires in North America, satellites ... Full description.

As part of the GLOBE program's 2003 Teacher's Guide, this site provides information and activities related to understanding hydrology. Sections featuring protocols and activities cover collecting water samples, conducting tests such as dissolved oxygen, conductivity and salinity, modeling a local watershed, comparing local water to global data, modeling water balance and looking at how water chemistry ... Full description.

Visitors can access information on a variety of water issues in Arizona, including the Colorado River, riparian areas, water conservation, water rights, and recreation. The Arizona Water Resources Research Center (WRRC) provides a glossary of water terms, a stream gauge map and a directory of water-related agencies and organizations, especially Arizona Project WET (Water Education for Teachers). Other ... Full description.

This United States Geological Survey (USGS) general interest publication presents a description of ground water in the U.S. This includes what ground water is, how it occurs, aquifers and wells, ground water quality and what affects it, and the state of U.S. ground water resources. Full description.

This site houses a module on Water Quality. The module is designed to be informative and interactive. Students are presented with a simulated situation where their newest client, who owns a catch and release fishing guide service, is upset over the fact that the fish in a stretch of "Bear Creek" have been dying. The client has called on the student's firm to figure out what is killing the fish in ... Full description.

This on-line expedition focuses on the flow of ocean water along with its climatic impact and environmental consequences. Learning objectives include an awareness that ocean waters are constantly on the move, that ocean currents influence climate and living conditions for plants and animals, even on land, and that currents flow in complex patterns affected by wind, the water's salinity and heat content, ... Full description.

This resource gives an impression of how immense our Universe is by employing a method used many times in "Power of 10" films - that is, starting with an image of the Earth and then zooming out towards the furthest visible reaches of our Universe. This is not, however, an exercise in "powers of 10" - on the contrary, the goal is to show astronomical distances without scientific notation. It focuses ... Full description.

This website complements the book "Dr. Art's Guide to Planet Earth" written by Dr. Art Sussman. The website includes animations, lesson plans and experiments that can be used in conjunction with the book. The number of items are continually being increased as a result of collaboration with K-12 teachers and field testing. It also includes the complete text of the first chapter which introduces systems ... Full description.