produced in association with Cream Productions Inc. for National Geographic Television & Film also in association with ZDF, ZDFE, France 5, BBC ; producer & director, Christopher Rowley ; writer, Michael W. Sheehan
a Gardner Films production in association with PBS and Devillier Donegan Enterprises ; produced and directed by Robert Gardner ; Jonathan Grupper, series writer
Time-Life Video & Television ; series creator and producer, Jeffrey Peisch ; executive producers, Quincy Jones, Bob Meyrowitz, David Salzman ; Andrew Solt Productions ; QDE in association with Telepictures Productions
2 Entertain ; BBC ; BBC Earth ; a BBC/Discovery Channel/France Television co-production ; series producer, Dale Templar ; executive producer, Brian Leith ; BBC Productions Bristol/Wales
series producer, Martha Holmes ; executive producers, Michael Gunton, Susan Winslow ; producer/writer, Paul Spillenger ; a BBC/Discovery Channel/SKAI co-production in association with RTI SpA