The Rock Cycle 12. The Materials of Earth Covers the origins, classifications, and uses of minerals. Volcanism Explains how volcanos are formed, and assesses the importance of volcanic activity to Earth's geology and climate. Carving the Landscape 21. Groundwater Explains how this critical resource is distributed and recycled.
Deserts cover a third of all land masses and are located in polar as well as equatorial regions.
This program shows how they form and their major features. Glaciers Responsible for such spectacular scenery as the Alps and Yosemite Valley, glaciers are important sculptors of Earth's surface. This program takes viewers to the beach, a dynamic zone where the sand is in constant motion, sensitive to variations in waves, winds, tides, currents, and human intervention. Living With Earth 25. Living With Earth, Part I Expresses human responses to the destructive forces of natural phenomena, such as earthquakes and landslides.