The human foot has 26 bones, 33 joints, and over 100 muscles, tendons and ligaments. Yet, most prosthetic feet on the market ...

Knuckle-bone shooting is a popular team-based game played in Mongolia. Teams of six to eight players flick thirty domino-like marble tablets on a smooth wooden surface towards a target of sheep ...

On the ground, chimpanzees use a characteristic gait called knuckle-walking ... side when all our weight is on one foot in mid-stride. Chimps have thigh bones that do not slope inward to the ...