Section de l'analyse et qualité de l'air, Direction de la recherche sur la qualité de l'air, Direction générale des sciences et de la technologie, Environnement Canada
director, Karen Duthie ; writers, Karen Duthie, Diana Wilson ; producer, Diana Wilson ; produced with the participation of the Canadian Television Fund ; produced in association with the Documentary Channel ; produced in association with Life Network Inc. ; an Artemis Dreams Productions/Producers on Davie Pictures production