blog postsStudy produces staggering estimate of soil depletion from Midwest farmingFeb 25, 2021 9:00 am by National Public RadioIllinois in the NewsShare on FacebookTweetEmailImagesNPR (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 FacebookTweetEmail