blog posts Study produces staggering estimate of soil depletion from Midwest farming Feb 25, 2021 9:00 am by National Public RadioIllinois in the News Share on Facebook Tweet Email Images NPR (Feb. 24) Other soil scientists are skeptical. Illinois professor Michelle Wander says the study relies on a series of assumptions to fill in gaps in the data, and those assumptions probably overestimate topsoil loss. Share on Facebook Tweet Email