This unmanned vehicle from a research team at the University flies straight toward a wall and then at the last second raises its nose up 90 degrees and lands vertically on the wall. Or maybe I should say perches on the wall, sort of like a butterfly might. It's able to cling to the wall using these nifty little flexible toes and claws that remind me of a beetle's toes. While perching the drone can recharge its power source, take shelter from adverse weather or conditions and conduct surveillance.