This article describes a series of activities in which students investigate soil, culminating in the biomimicry of reducing landfill waste. After students learned about soil's ecosystem structure and the function of its food web with nutrient cycling and decomposition, they discovered that they know a solution to reduce the trash in landfills by 50% and turn "waste" into a useful resource. This was accomplished by imitating the soil food web through composting. (Contains 3 figures and 5 online resources.)