Introduces readers to what makes up soil, from humus and plants and animals to water and air. Learn how weathering, erosion, parent material, decay, bacteria, organic matter, climate, and time contribute to soil formation. A geology-themed project provides the opportunity for hands-on experience.

Includes index.

Darwin's field -- A closer look -- Getting your hands dirty -- Cracking up -- Getting carried away -- The circle of life -- Land and climate -- A world of soils -- Looking below the surface -- The best soil around -- Living with soil -- Standing strong.