Ants Are Model for Tiny Powerful Robots Researchers have developed a team of robot that can apply tiny amounts of force in concert to move objects thousands of times their own weight. The team members are six microrobots weighing a mere 3.5 ounces together, and they can pull car that weighs more two tons.  The micro-robots, modeled after ants, are so tiny their pieces had to be put together with tweezers. The car is the one that researcher David Christensen [...]