beth shapiro of university of california santa cruz. >> ancient dna is a technique to be used to getom animals and plants that live in the past of. >> de-extinction. do you think it's doable in the foreseeable future? >> i don't think making 100% genome of this can be possible. this is why people who are interested in deextinction of the mammoth for example, used genome editing techniques, to make specific changes in the genomes of an animal that is still alive to make it look more like the genome of the animal you want to try to deextinct. away you would need to know are the places in the genome, the elephant genome, the places in the elephant genome that differed from the mammoth genome, and you would be able to have an elephant that has some of characteristics of a mammoth, for example, tolerance to cold or longer hair. >> tell me more about that genome editing. is that possible? >> that is possible today. and the technology to do multiple changes at once is being developed as we speak. there are some people in science that say if a species has gone extinct, there is a reason for