director, Elise Swerhone ; written by Robert Lower ; producers, Merit Jensen Carr, Sandra Moore ; a Merit Motion Pictures production ; produced in association with Canadian Broadcasting Corporation ; produced in association with National Geographic Channel, and with the participation of Discovery Science
90th Parallel Productions Ltd. in association with the Canadian Broadcasting Corporation and National Geographic Channel with the participation of Discovery Science ; producer/director, Michael Allder
director, Jacqueline Corkery ; producer, Tina Verma ; produced by Canadian Broadcasting Corporation, in association with National Geographic Channel, and with the participation of Discovery Science
Bullfrog Films presents ; produced and directed by Vishnu Mathur ; researched and written by Karen Gordon ; produced by Canadian Broadcasting Corporation