Episode 78: Doug Weatherbee, a Soil Foodweb Advisor and owner of SoilDoctor.org, talks about the biodiversity that lies beneath our feet. One tablespoon of soil contains over six billion bacteria and countless other species that contribute to a medium teeming with life. We depend on this life to sustain us. Soil is the meeting place of atmosphere, hydrosphere, lithosphere, and biosphere. Like most places where “edges” of different worlds meet, the soil is a dynamic interface. Fertile soil is alive with the biodiversity of a thriving forest; complex ecosystems connecting, growing, living, co-existing, dying. In many places of the world topsoil, (where most soil life is found), is being lost at an unprecedented rate. Our lives depend on saving, cultivating, and regenerating soil life.