With a bend of the knees and an arch of the back, a Japanese engineer today set a world flight record for a paper plane, keeping his hand-folded construction in the air for 26.1 seconds. Using a plane specially designed for "long haul" flights, Takuo Toda narrowly failed to match his lifetime best of 27.9 seconds, a Guinness world record set in Hiroshima earlier, but achieved with a plane that was held together with cellophane tape. Today's flight, inside a Japan Airlines hangar near Haneda airport in Tokyo, was the longest by an unadulterated model. "I felt a lot of...