Filed under: Robots, TransportationThe third time 'round hasn't brought any luck to the space elevator crowd. The NASA-sponsored challenge is in its third year of running, and while technology is improving at a rapid rate, it's still not quite ready to meet the Space Elevator challenge's demands. Speed requirements have been boosted to 2 meters per second, and this year's contest seems have gone off without the geeky rule disputes of last year. The U
