article_snippet: we is unique when compared to we closest living relatives, the ape.
article_snippet: But scientists are not sure when our skeleton evolved to create this distinction, which is one of the questions driving the study of human evolution today.
article_snippet: Now, researchers believe the answer could lie in our big toes.
article_snippet: ‘The unexpected structural differences we observed are equally intriguing.
article_snippet: our are eager now to begin examining how far back in evolutionary time The unexpected structural differences we observed can be traced.
highlights_snippet: Researchers from the University of the Witwatersrand say the method could one day reveal when we skeleton evolved to make we walk differently from we closest living relatives .