I think the film is part of a trilogy or something, one of the other films being that "Koyaanisqatsi" Rev. Powell mentioned. Check out the IMDB, they'll probably mention the other entries somewhere.
The other two films in the "Koyaanisqatsi trilogy" are
Powaqqatsi and
Naqoyqatsi, and there's also the related short
Anima Mundi. All of these were scored by Phillip Glass and are sometimes considered as music/film collaborations, with the composition being of equal importance to the images and not just accompaniment. "Baraka" seems to be from an unrelated director, but one certainly inluenced by "Koyaanisqatsi".