How green is your grass — not just green as in color, but green as in healthy and environmentally friendly? A natural lawn is safer for your growing family and for the plants, birds, mammals, and insects that rely on it for food and shelter. Healthy grass also prevents soil erosion, filters contaminants before they make their way into your waterways, and absorbs many types of air pollution like dust and soot. You don't have to be an expert to make your grass greener. This chapter will show you how it is done.