written, produced and directed by Mark Davis ; a NOVA production by MDTV Productions for WGBH/Boston in association with National Geographic Channel International
a co-production of Thirteen for WNET.org and Mannes Productions, Inc. in association with ARTE/France, NDR, Australian Broadcasting Corporation with the participation of YLE ; Louise Rosen Ltd. ; a film by Elena Mannes ; executive producers, Elena Mannes, Margaret Smilow ; written and directed by Elena Mannes
a FRONTLINE Co-Production with RAINmedia, Inc ; written and produced by Marcela Gaviria and Martin Smith ; co-produced by Will Cohen and Timothy Grucza ; edited by Jason Schmidt
producer/writer, Steve Drake ; produced by Termite Art Productions for the Discovery Channel (1st work) ; produced for The Discovery Channel by Advanced Medical Productions, Inc. (2nd work) ; Assignment Discovery ... produced by Tapestry International Productions, Ltd. for the Discovery Channel
produced by Barak Goodman, Rachel Dretzin ; directed by Barak Goodman ; written by Rachel Dretzin ; a Frontline co-production with 10/20 Productions, LLC ; WGBH Educational Foundation ; WGBH Boston
a BBC/WGBH Boston/ProSieben co-production [in association with France 3 ; produced and directed by John Hayes Fisher ; produced for Nova by Gary Glassman ; senior executive producer, Paula S. Apsell
series producer and reporter, Renata Simone ; a co-production of WGBH/Frontline and Paladin InVision Ltd. with Silverbridge Productions Ltd. and Channel 4 ; WGBH Educational Foundation