Eroding topsoil troubles Midwest farms
A Moment of Science - Podcast autorstwa Indiana Public Media
After over 200 years of cultivating fields, topsoil has eroded in these areas. What exactly does that mean for farmland?
A Moment of Science - Podcast autorstwa Indiana Public Media
After over 200 years of cultivating fields, topsoil has eroded in these areas. What exactly does that mean for farmland?