An unusual new kind of social activity is taking Concord by storm. Some of the more than 50 participants drive from out-of-state. They range in age from mid-teens to mid-seventies. They meet every other Wednesday night at Saint Paul?s School. There?s no dancing or drinking involved, although there is a certain amount of denatured alcohol. The participants meet for three hours at a time ? to identify bugs. NHPR?s Doug MacPherson reports.