Produced & directed by Jon Palfreman and Barbara Moran ; written by Jon Palfreman ; a Frontline coproduction with the Palfreman Film Group, Inc. ; WGBH Educational Foundation
a Frontline co-production with Ark Media ; produced by Rachel Dretzin, Muriel Soenens ; written by Barak Goodman ; directed by Rachel Dretzin & Barak Goodman
produced by Primitive Entertainment and Films à Trois in co-production with the National Film Board of Canada ; produced in association with Centre National de la Cinématographie ; directed by Nick de Pencier ; narration written by Elizabeth Arledge ; produced for NOVA by Elizabeth Arldege