More than 80 percent of films made before 1929 have been lost - damaged beyond repair, thrown out or reused. In an effort to save what remains, film maker Martin Scorsese set up the Film Foundation in the US quarter of a century ago. The foundation's free educational curriculum, The Story of Movies, teaches young people - over 10 million to date - about film language and history. Julia Wayne works for the non-profit organisation, and Lynn spoke to her on a visit to New Zealand.