Water is a precious element. It can provide us with what we need to survive, but it can also cause massive destruction. Some areas of the world are experiencing a depletion of water due to drought, whereas some areas have too much water caused by flooding, both of which can be very dangerous. Readers explore these facts and more with this engaging look at Earth's many sources of water. Insightful main text, informative diagrams, graphic organizers, fact boxes, and full-color photographs provide readers with an exciting voyage into Earth science.