The monowheel—a bizarre, one-wheeled vehicle that places its rider inside the wheel itself—has captivated inventors and daredevils for over a century. Yet despite scattered fascination, this machine ...

So much for authority figures on Segways. The Portland Police Bureau is about to step it up a notch — well, in a year. For a summer. Ryno Motors created these electric vehicles with a seemingly ...

Ferdinand Porsche, it seems, was always ahead of the curve. He conceived one of the earliest electric cars back in 1900, which later added a gas engine to compensate for its primitive lead batteries.

Together with colleagues from the USA, scientists from the University of Bonn and the research institute Caesar in Bonn have used nano-structures to construct a tiny machine that constitutes a ...