Depleted & Contaminated Soil and Your Food Supply (Incredibly Disgusting Environments)

On a spring day in 1935, a cloud of black, suffocating dust covered much of Kansas, Oklahoma, and Texasit wasn't the first of many such dust storms. The simple answer to how this happened is soil erosion. Readers explore the incredibly disgusting issue of soil erosion and contamination. Most importantly, they learn what can be done in the future to keep our valuable soil safe and intact.