An airplane with no propeller and wings that go ... which is just one reason we love [Hobi Cerdas]’s build of the Pterothopter, a rubber band-powered ornithopter modeled after a pterodactyl.

Just a few strips of balsa wood fitted together ... to a more suitable building nearby. For years, Guillow was able to make a living by designing and producing such kits (most of which the company ...