Geology explores why the earth looks and behaves the way it does, from the organized shapes of crystals to the ever-changing shapes of continents. Careful observation can reveal countless clues to a rock`s history: How was the rock formed? What is its composition? Have wind, water, and gravity altered its appearance? Discover Nature in the Rocks introduces you to this fascinating world through directed observations and hands-on activities that lead you to your own exciting discoveries.