In most parts of the world, water is a scarce resource. That might seem strange, because there is so much water on Earth. Almost all of the water on Earth, more than 97 percent of it, is seawater in the oceans. The rest is called fresh water, because it does not have a high salt content. Most of the world’s fresh water is frozen solid in large glaciers in Antarctica and Greenland. Almost all of the fresh water that is available for human use is either contained in soil and rock below the surface, called groundwater, or in rivers and lakes.
Curricula & Instruction Resources
Student investigations start with Earth in the solar system, and then focus on the dynamics of...
This area of the education resources website provides links to NOAA resources which help explore...
Water is the most important substance on Earth. Water dominates the surface of our planet,...
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Teaching Media Resources
Here is the original Virtual Cave, devoted to the astounding variety of nature's handiwork found...
Examines the role of the bottled water industry and its effects on our health, climate change,...
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Maps on Hawaii's water and geology; Location: Honolulu, Hawaii
Volunteer water monitoring, volunteer cleanups; Location: Atlanta, GA