For humans, walking and running is primarily done by ankle hence, it can be considered as the major power source. Researchers at the University of North Carolina and Carnegie Mellon University have built a device called ankle exoskeleton that could be used for stable and easier walking. The device has no batteries and is devoid of any motors and it aims towards lessening the energy cost of human walking. The weight of carbon-fiber device is around 500 grams, nearly as that of a normal loafer.
Read MoreAnkle Exoskeleton for increasing Walking Efficiency: Better Gas Mileage for Humans
