writers/directors, Marion Gruner, Christopher Sumpton ; producers, Christopher Sumpton, Robin Benger, Marion Gruner ; produced in association with Arte France, Unité Découverte et Connaissance ; and in association with Canadian Broadcasting Corporation ; Cogent Benger Productions Inc
a NOVA production by Big House Productions for WGBH Boston ; executive producer, Chris Schmidt ; co-produced by Cara Feinberg ; written, produced and directed by Daniel McCabe
presented by Thirteen for WNET.ORG ; Distributed by American Public Television ; A ParnassusWorks Film ; produced and directed by Richard Rifkind, Carole Rifkind