a presentation of the Smithsonian's National Air and Space Museum and the Motorola Foundation ; written and directed by Bayley Silleck ; produced by Jeffrey Marvin, Bayley Silleck
produced and directed by Patsy Northcutt, David Kennard ; written by Brian Thomas Swimme, Mary Evelyn Tucker ; Yale School of Forestry & Environmental Studies ; Northcutt Productions
directors, Mike Slee, Nigel Simpkiss ; producer & director, Nick Shoolingin-Jordan ; series producer, Arif Nurmohamed ; a BBC/Discovery Channel co-production