Scientists and engineers envision ways to grow small unmanned aerial vehicles (UAVs) in labs through chemistry, in a matter of weeks, rather than years. A new machine called a Chemputer could enable advanced chemical processes to grow aircraft and some of their complex electronic systems, as well as produce multifunctional parts for large manned aircraft. Engineers and scientists at BAE Systems and the University of Glasgow are working on this organic approach to manned and unmanned aircraft design.