The film consists primarily of slow motion and time-lapse footage of cities and many natural landscapes across the United States. The visual tone poem contains neither dialogue nor a vocalized narration: its tone is set by the juxtaposition of images and music.
Reggio explained the lack of dialogue by stating "it's not for lack of love of the language that these films have no words. It's because, from my point of view, our language is in a state of vast humiliation. It no longer describes the world in which we live." In the Hopi language, the word Koyaanisqatsi means "unbalanced life".
The film is the first in the Qatsi trilogy of films: it is followed by Powaqqatsi (1988) and Naqoyqatsi (2002). The trilogy depicts different aspects of the relationship between humans, nature, and technology. Koyaanisqatsi is the best known of the trilogy and is considered a cult film.
Background:
Earth Day is an annual event, celebrated on April 22, on which day events worldwide are held to demonstrate support for environmental protection. It was first celebrated in 1970, and is now coordinated globally by the Earth Day Network, and celebrated in more than 192 countries each year.
In 1969 at a UNESCO Conference in San Francisco, peace activist John McConnell proposed a day to honor the Earth and the concept of peace, to first be celebrated on March 21, 1970, the first day of spring in the northern hemisphere. This day of nature's equipoise was later sanctioned in a Proclamation written by McConnell and signed by Secretary General U Thant at the United Nations. A month later a separate Earth Day was founded by United States Senator Gaylord Nelson as an environmental teach-in first held on April 22, 1970.