living on me, the skeleton here was discovered by lee berger and actually the first case by his ninear-old son. this was in south africa. also in 2009, that's when they were published in the discovery in 2008. at work in the fight in the leg of the skeleton when he first started to work on it, to me that's what was i studied it the foot and ankle and leg in a just finished myst phd. unseen all of these fossils and to me there was variation but not functional meaning variation in everything was so different from anything i'd ever seen, with his heel and ankle and knee. an aspect of the pip in the lower back that we hypothesize that walked in a very different kind of way that lucy and her kind and what is needed is that this carries right up until - and even on the doorstep of homo sapiens, you have neanderthals in europe and also in asia and the islands, you of others. in the right and south africa's this brand-new species, called. [inaudible]. so there are all these different species and populations coexisting and some of them we interbred with and some of them i don't think we proba