Mark became a serious fan of science fiction at about age five. He has been an active in SF activities ever since. He was President of the University of Massassachusetts SF Club. At Bell Laboratories he and wife Evelyn founded a science fiction club in 1978 and have run it ever since. The fanzine/newsletter, the MT VOID, which grew out of that club, has gone past 1300 issues. Mark has been a film reviewer on the Internet continuously since 1984. (Both are probably records.) The MT VOID has grown from a club notice to an internationally-recognized fanzine. Mark also writes long trip logs. He also has a strong interest in mathematics and in origami.