The Traubman family lives in San Mateo, California. Len is a pediatric dentist, retired after 35 years in his practice of dentistry for children in San Francisco. Libby and he helped launch the Foundation for Global Community (formerly Beyond War). Libby, a retired clinical social worker, is a full-time volunteer at the Foundation's Center for the Evolution of Culture in Palo Alto. Their children, Eleanor and Adam, in their mid 30s, have left the nest.