Takuo Toda
Japan
Japanese paper airplane expert Takuo Toda set the indoor paper airplane flight-duration world record on December 19, 2010, when his hand-folded plane stayed aloft for 29.2 seconds, officially recognized by Guinness. Toda is president of the Japan Paper Airplane Association and has spent decades studying the aerodynamics of paper flight. Every factor -- folding technique, paper thickness, launch angle, and throwing force -- was meticulously calculated to achieve this result.