Boundary Layer

In atmospheric science, a boundary layer is the air layer where theground comes into contact with the air, where daily fluctuations intemperature and moisture are transferred to or from the surface of theearth. This boundary layer teems with lichens, mosses, ferns, fungi,and diminutive plants. It’s a universe in miniature, anunexplored territory that author Kem Luther calls the stegnon,the terrestrial equivalent of oceanic plankton. In BoundaryLayer, Luther takes a voyage of discovery through the stegnon,exploring the life forms that thrive there and introducing readers tothe scientists who study them.