Researchers at the University of Essex are using Linux and tiny embedded computer modules to build fleets of unmanned aircraft that fly in flocking formations like birds, while performing parallel, distributed computing tasks using Bluetooth-connected Linux clustering software. The Gumstick modules measure 3.1 x 0.8 x 0.3 inches (20 x 80 x 8mm), and weigh “less than a tablespoon of water,” according to Gumstix. Link.