A drop of rain is a drop of life--from steam to snow, from polluted to purified, from stratus cloud to subterranean crack--water links the world in a living flow. Traveling with Drop, readers will see the world, inside and out, from solid, liquid and vaporous viewpoints. The everlasting, ever-changing Drop earns our respect for water and its unique role on Earth. Barbara Shaw McKinney is a teacher, as well as a curriculum developer, who promotes quality education through workshops for teachers.