Bats are the only mammals that truly fly. And the way they do it is very different from other flying things. The way they fly has only recently been understood and there are still questions. Scientist and engineers are trying to use what they do know to create bat-inspired flying machines, but things like bats self-cambering stretching wings skin, skeleton muscles and tiny hair sensors are proving difficult to replicate.  Thanks to our guests in this episode: Dr. Sharon Swartz-Brown University Dr. Nancy Simmons-American Museum of Natural History  Find the transcript here. AirSpace is created by the Smithsonian's National Air and Space Museum with generous support from Lockheed Martin.