USA, the city of Spokane. World exhibition dedicated to environmental protection, problems of interaction between man and nature. Exhibits of the pavilions of the USA, Australia, the Soviet Union. Visitors to the exhibition include the pianist Van Cliburn. Attractions on the territory of the exhibition. Newsreel of ecological disasters: dead fish on the surface of the river; oil on the ocean surface; scoop to collect oil from the surface of the water. Smoke pipes; highways filled with cars; exhaust fumes from cars.