Their robot is packaged within a single wheel: its motor, battery and controls remain stationary in the centre of the wheel while a rubber tyre rotates around the outside. The story has additional ...

Q: I saw an electric unicycle on a city street violating various traffic laws. I looked up what I saw online, and some of these unicycles have top speeds of over 50 mph. Do you have thoughts on what ...

Editor’s Note: Since this story about University of Virginia student Mason Allen appeared in the fall, an Austrian unicyclist beat Allen’s record. But that hasn’t deterred him from continuing to ride ...