Bullfrog Films presents ; with Gwynne Dyer ; director, Josh Freed ; writer, Gwynne Dyer ; produced by Green Lion Productions, Inc. in association with the Canadian Broadcasting Corporation, with the participation of Telefilm Canada and Société générale des industries culturelles (SOGIC) [and] National Film Board of Canada ; producers, Marrin Canell, Catherine Mullins
Icarus Films ; Tecolote Movies, Piano presentan ; dirección, Eugenio Polgovsky, Mara Polgovsky ; guión, Mara Polgovsky ; productores, Mara Polgovsky, Julio Chavezmontes
The Joint Academies Committee on the Mexico City Water Supply, Water Science and Technology Board, Commission on Geosciences, Environment, and Resources, National Research Council and Academia Nacional de la Investigación Cientifica, A.C., Academia Nacional de Ingeniería, A.C