Plowing soils and clearing forests for agriculture sent more carbon into Earth’s atmosphere than did all fossil fuel burning until the mid-1950s. Carbon-farming zealots claim putting it all back into the soil will cure our climate ills. University of California researcher Jeff Mitchell’s 20-year trial comparing no-till plus cover crops to standard tillage practice demonstrates that is easier said than done. However, other soil health metrics were profoundly affected. Join Mitchell and “Down on the Farm” host Tom Willey in conversation.