Science: Air Cities

Crawling around on the surface of the earth, burrowing underground, seem absurd occupations for creatures that have learned to fly. Soon men will move their houses and traffic into the upper air entirely. So predicted one Frederick Kiesler, young Viennese architect exhibiting at the Decorative Arts Exposition in Paris, last week. Kiesler had invented nothing, discovered nothing; but his artist-dream seemed hardly less logical and likely than did the skyscraper, the ocean-crossing dirigible, the hovering helicopter, 25 years ago. In the Kiesler dream, enormous steel towers arise, honeycombed with elevators. Hundreds...

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