All plants need four things to survive and thrive: sunlight, air, water, and nutrients. All of these, except sunlight, the plant gets from the soil. But what exactly is going on down there? Join Lynn Cox as she takes you into the fascinating, living world that is going on in your soil. Not only will you be introduced to the living organisms, but how they interact with your plants, and what you can do to protect and support them as they support your plants.