You may not realize as you walk in a forest that the soil beneath your feet is alive and evolving.  Forest ecologist Robert Ayotte will discuss the formation of our soils since the last Ice Age and how they have generated entire forest ecosystems.  Learn about the different types of soil in our local forests and how they are threatened by invasive species and climate change.  Dress for the weather, as we will take a walk to see examples at the end of the program.  Please register in advance at 734-475-3170.