Of the many climate crises we face, soil erosion isn’t usually on the top of people’s lists. But it should be. Without topsoil, we can’t grow food. Without food, civilizations collapse.
The U.S. Department of Agriculture estimates that our agricultural soil erodes at an average rate of almost 5 tons of topsoil per acre, per year. In contrast, soil regenerates at less than one-tenth of that rate. Farming practices contribute to the loss, as does global warming. But Dr. Jo Handelsman says we can fix it.