Soil formation and landscape evolution are closely related, but they have generally been considered separately by scientists. Now Vanwalleghem et al. have created the first model to fully integrate the two. The model, called MILESD, looks at soil formation processes, including physical and chemical weathering, formation of clays, and biological mixing. It also includes vertical and horizontal soil redistribution processes. The model allows the researchers to look at the effect of erosion on soil profile depth and layering as well as soil properties such as texture, stoniness, and organic carbon content. It also enables them to study the effect of soil dynamics on sediment dynamics.