flight

Engineering students and teachers at the University of Toronto Institute for Aerospace Studies have finally fulfilled Leonardo da Vinci's vision of an ornithopter, an aircraft, powered by a human pilot's muscles, which flies by flapping its wings. Unmanned ornithopters have already been used for practical reasons and by hobbyists, but having a person power the whole contraption was a much higher level of difficulty. The wing span of this ornithopter is said to rival that of a 747.