The American Chestnut tree was once common in the Appalachian region. It was decimated by a blight in the early 20th century. Efforts are being made to resurrect the tree, and REI in Maryland is offering classes on the subject. The classes are being held at 7:00 PM in the Rockville store on 3/5/08 and the College Park store on 3/11/08. The class is free, and no registration is required.