A team at Cornell University's Computational Synthesis Laboratory has developed tiny hovering Ornithopters. These machines were the first type of design for mechanical flight that people began to experiment with. The team at Cornell has been working on the project design for the past few years, but last year they were able to construct a working model using 3D printing techniques. They mimicked the principles of insect flight to design their hovering machine. These little guys flit around like mechanical lacewings.