Dr. Judith Owens, director of sleep medicine at Boston Children’s Hospital, will be speaking at a forum in Wayland about teens and the importance of getting enough sleep. “The ABCs of ZZZs: What Every Parent Needs to Know About the Importance of Sleep in Kids and Teens” will be held at 7 p.m. Friday, Sept. 25. The Walden Forum event will be held in the Wayland High School auditorium, 264 Old Connecticut Path. The Walden Forum is a free public series that brings people together to foster discussions about ethical, religious, political, scientific, social and other topics. For more information, go to www.waldenforum.org.