the siberian tosle - i have been in this case, it's literally the end bone of a pinky, and we would know nothing at all about what that bone was like. it's not like we used the pinky bone as an indicator of evolution. out of that we have 3 billion base pairs of dna. we have the whole story of this individual's ancestry from this tiny bone. in the spanish specimen we have a little part of the dna. the technology evolved to the soon. >> we'll see more and more old dna because of the new methods? >> yes, basically as you die and your body degrades, so does your dna. it's broken into tiny bits over time. today's sequencing technology, not developed for us, evolution is riding the back of biomedical technology. today's, for medicine and uk genetics is built on the idea of sequencing little bits of the gee nom and reassembling them. it's called shotgun sequencing. we use them and advance them. they have done a tremendous job to make the dna from ancient machines. >> do you think we'll find more discovered? >> i anticipate we have sequenced three different groups of people and thought that it l