The NAV, or nano air vehicle, operates by using two flapping wings, which also function as the rudder, elevators, ailerons and engine. With its two wings, the NAV is able to hover, move forward ...

An international team of scientists has taken this approach to produce a bird-inspired drone with flapping wings that can hover, dart, glide and dive, all while weighing the same as two ...

Quadcopters? Please, those are so 2012. This ultralight ornithopter uses four flapping wings to get off the ground. The best part? Most of it can be fabricated using consumer 3-D printers.