Ohio State University
Osu: Beyond Weather and the Water Cycle: The Sun: Earth's Primary Energy Source
Extensive article that discusses the first principle of climate science, i.e., that the Sun is the primary energy source for the climate system of the Earth. Presents five concepts for this principle and explains each, providing...
University of Illinois
University of Illinois Urbana Champaign: A Summary of the Hydrologic Cycle
Animation and text explain the water--or hydrologic--cycle, which is the process that water undergoes in nature.
US Geological Survey
Usgs: "Thirsty? How 'Bout Seawater?"
This U.S. Geological Survey website explains the desalinization method used by some communities to change sea water into drinking water. Click Home to access the site in Spanish.
Other
Niwa: Common Hydrological Terms
A glossary of terms that describe the processes that occur in hydrology. Glossary explains evaporation, precipitation, soil moisture, groundwater, and stream flow.