This Tiny Drone Uses Friction to Pull More Than Its Own Weight

WIRED 

Last week, Stanford researchers revealed that that they had built tiny drones that can open doors. I'm not sure I'm happy about this: How will we keep the robots out of our houses if they can just open the doors? But this is also pretty cool. These tiny drones (or micro air vehicles) are able to pull super heavy loads as compared to their own weight--up to a factor of 40. Well, I guess it's crazy--crazy awesome.