As a young geologist, it took me a while to appreciate the importance of soil and the opportunity soil restoration presents for addressing key challenges humanity now faces. Over time, studying how erosion moves rock, sediment and soil to shape landscapes, I became familiar with how soil both influences and reflects the evolution of topography. We’re all familiar with the topographic displays of bare rock in the Grand Canyon, sharp-angled mountain peaks, and the smooth, rounded profiles of soil-mantled slopes in the rolling hills of California. But I also came to notice that prosperous regions tended to have rich, fertile soil. Impoverished ones did not.