Scientists literally reinvented the wheel with this new shape-shifting, all-terrain wheel design

For most people, “reinventing the wheel” is a silly idiom. For a team of South Korean scientists, it is their job. According to a new peer-reviewed research paper from the journal Science Robotics, the classic rubber circle could someday be a thing of the past. Scientists are experimenting with a new shape-shifting device that’s capable of being as hard—and fast—as regular tires, or as malleable as liquid metal, depending on the terrain they are traversing. These new wheels can change shape...