Biosolids are applied to soils at rates to meet the fertilizer demands of crops. To really understand what all the fuss is about - both good and bad, it helps to have a basic understanding of soils and soil processes. How do you tell if your biosolids are improving the soil? How can any constituents in the biosolids really cause harm? Learn soil basics in a 6 week class - an hour a week will give you the basics.