This issue's cover: Aerial view of Winnisook Watershed on Slide Mountain in the southeastern Catskill Mountain Region of New York, site of detailed studies of relationships between terrain attributes and soil chemistry. Photo courtesy of Michael McHale, U.S. Geological Survey. See "Forest Soil Chemistry and Terrain Attributes in a Catskills Watershed" by C.E. Johnson, J.J. Ruiz-Méndez, and G.B. Lawrence, p. 1804-1814.