The Science Of Hamster Balls: New Rolling Robot Could Help Farmers

Wheee! We've seen robots with wheels, robots with legs, and even robots with whegs. We've seen snakebots that use a creepy combination of undulation and grip to shimmy and swim. Now one research team has come up an innovative new robot with yet another way of getting around. They've made a plastic sphere with a mechanism inside to propel it like a hamster in a ball. The robot's creators, a team of researchers from the Universidad Politécnica de Madrid in Spain, designed it to roll around in far...