a production of TLC ; in association with James Burke and the Principal Film Company, UK ; a presentation of Discovery Productions ; presented by James Burke
ABTV production for the Learning Channel in association with IBIS Films and Channel Four Television ; written and presented by John Romer ; director, Ron Johnston
produced by Partners in Motion and Single Spark Pictures for the Learning Channel and History Television ; executive producer, Mark Mori ; producer, Ron Goetz ; director, Chris Triffo
series producer, Leanne Klein ; director, Daniel Percival ; a Wall to Wall Television Ltd. production for Channel 4 Television, The Learning Channel & ITEL
TLC presents in assocation with Milojo Productions ; a Hock Films Production ; a film by Jonathan Hock ; written and directed by Jonathan Hock ; produced by Philip Aromando, Nelson Hernandez, Jim Podhoretz, David Easton
an ABTV production for the Learning Channel in association with IBIS Films and Channel Four Television ; series producer, Nicholas Barton ; written by John Romer ; co-writer, Elizabeth Romer ; series director, Derek Towers