State police and other searchers have found a missing man in Huntington, but a search for another missing man continues in Stratton; the central political event this week in Vermont will be the special veto session of the Legislature on Wednesday; schoolteachers are helping in archeological digs in preparation of the 400th anniversary of Samuel de Champlain’s arrival in this region; biologists have discovered a new invasive algae that goes by the vivid name “rock snot.”