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This Geographic Information System (GIS) is designed specifically for use in middle school through college classrooms. It provides a carefully selected subset of the features of a professional GIS environment, including...
This data warehouse for the Great Basin, Sierra Nevada and Lake Tahoe areas includes: LANDSAT, SPOT and ASTER data; National Elevation Datasets for Nevada; digital elevation models and raster graphics for Nevada and...
The Amazon rain forest is the largest tropical forest in the world. It stretches across South America from nearly ocean to ocean. No seasonal view of this territory existed until a NASA-university collaboration began...
Materials here focus on worldwide water issues and policy decisions, and discussions of ongoing projects involving conservation, drought mitigation, and solutions for small landholders. A set of tools and databases is...
This site offers an extensive collection of links to sites about water, life, and agriculture in the American West. Some of the articles are from the 19th century, when the arid, western United States was settled. Other...
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