Soils are truly wonderful! They are the major support systems of human life and welfare. They provide anchorage for roots and hold water and nutrients, long enough for plants and micro-organisms to make use of them. In fact, most of the land’s biodiversity lives in the soil, not above ground. This audio tour guides you along the beautiful soils of our planet. From the red soils of the African Savanna to the black soils of the Russian grass steppes.