Understanding the nature and appropriate management of soils for roads, houses, buildings, and other human-engineered artificial environments is of concern to soil scientists, land managers, environmental scientists, and biologists. Challenges include waste disposal, pest management, erosion and sediment control, construction, and minimization of radon risk. The manner in which we manage and preserve this valuable natural resource influences the stability and beauty of our communities, as well as the quality of life and the environment.