Greg talks with one of the foremost experts on soil health Dr. Elaine Ingham and learns a lot about the world of microbiological life in the soil.  Her studies have been amazing and it is easy to see how being a student in one of her classes can be quite informative.  She tells about how she became so focused on the microbiological life in the soil and educates us on the importance of those first few dozen inches of earth our food is grown in.  This is a mini course of science in just one podcast.