Provides a simple explanation of the water cycle by describing four main stages - evaporation, condensation, precipitation, and collection. Includes three project ideas and some interesting facts.

Describes the four main stages of the water cycle - evaporation, condensation, precipitation, and collection.

The 604,500 hectare marine and terrestrial property of Ningaloo Coast, on the remote western coast of Australia, includes one of the longest near-shore reefs in the world. On land the site features an extensive karst system and network...

The site includes eighteen interconnected lakes in the hyper arid Ennedi region of the Sahara desert covering an area of 62,808 ha. It constitutes an exceptional natural landscape of great beauty with striking colours and shapes. The...

Visit the U.S. Geological Survey's website for a wide variety of information on water. Content includes data on water quality, water use, acid rain, among others; publications; information on water resource programs; maps; information on...

Visit the U.S. Geological Survey's website for a wide variety of information on water. Content includes data on water quality, water use, acid rain, among others; publications; information on water resource programs; maps; information on...

A collection of video lectures from a course introducing students to the basics of engineering geology. Webpage includes forty lectures from a professor at the National Programme on Technology Enhanced Learning. Lectures vary in length...

An explanation of the water cycle.

Why have more than half of America's original wetlands been destroyed? What are the benefits of wildlife to people and the environment? Where are wetlands found? Find out the answers to these questions here.

Downloadable booklets with basic information about the U.S. water supply, e.g., where our drinking water comes from.

Table outlines the EPA's standards for safe drinking water, defining levels of contaminants and listing possible sources of these contaminants.