Robots may be one of the greatest 21st-century inventions, but up until Oct. 28, you couldn’t purchase one to help out with daily household tasks, such as emptying the dishwasher or vacuuming your ...

Late last week, Google research scientist Fei Xia sat in the center of a bright, open-plan kitchen and typed a command into a laptop connected to a one-armed, wheeled robot resembling a large floor ...