I found myself thinking about topsoil and the west so I went to the search engine. Nebraska Public Media has a piece from last April:
A few years ago, Isaac Larsen attended a wedding at a pioneer church in Minnesota. After the ceremony, he wandered around a cemetery by the church.
He noticed the cemetery, which had never been tilled, was at least a foot higher than a corn field just on the other side of a fence.
Tilling erodes soil.
… Read the restThe University of Massachusetts Amherst geosciences professor and his co-researchers have released a new study that found topsoil in the Midwest is eroding at an average rate of 1.9 millimeters per year. They measured elevation differences between native