Discover the Wonders of Our Earth and the forces and life forms that shape our world with the Physical Geography Series. This program explores how the surface of the earth is in constant struggle with the elements. Wind, running water, gravity and temperature changes break down rock formations and carry away material to build up deltas, beaches, geosynclines and dunes. This program was filmed all over America. Subjects covered include: The difference between weathering and erosion, How wind, water and gravity work to destroy and carry away eroded material to change the surface of the earth, How running water acts to carry away all rock materials and deposit in the world's oceans, Visit Bryce Canyon National Park in Utah to see a living laboratory of weathering and erosion, How the forces of nature work to level the surface of the land.