Although Ben Saks works in the architecture department at Carnegie Mellon University, his passion is building something much smaller than a skyscraper.
He builds and competes with small rubber band-powered planes that are so light they must be flown indoors. A single twisted band can keep the craft alight for more than 30 minutes.
Mr. Saks is working on "FLOAT: The Art of Flying," a documentary chronicling the two-year cycle from one international championship to the next. His aim is to increase the number of indoor model plane enthusiasts, both at amateur and competitive levels.