"This is the pulse i Mike and Scott and were talking about comebacks. Some species make comebacks differently by way of regeneration you know when animals can regrow parts of themselves like starfish or lizards. That's what Molecular Biologist Alejandro Sanchez Alvarado Studies and his creature of choice is a flat worm. The Latin name is Schmidt Mediterrania. They're about the size of toenail clipping and they live in freshwater in southern Europe. You can take these animals and you can cut them into as many as eighteen different fragments and and the remarkable thing is that each and every one of those fragments will go on to reshape themselves and produce eighteen individual flowers. That's the equivalent of like me cutting my little finger and watching my little finger regenerate taught me completely and do we have any clue why they have this ability to regenerate. Do they get cut into eighteen pieces frequently when out in nature they do something <hes> that <hes> some of the species do something that is akin to regeneration which is they themselves will fishing. They'll actually split themselves into two fragments as a way to reproduce essentially they clone themselves in the wild so so the way it works <hes> to describe it is that <hes> they have a little head and a little tail and detail serves as an anchor the head begins to crawl forward and he stretches almost like a rubber band until he forms a very thin waist the now just snaps and when it snaps it produces a headless tail and the tail is head both of which will actually go on to regenerate complete animals in the span of approximately a week to week and a half and how do they do that att. That's amazing yeah so that's the one million dollar question that is that is really key question. We have some suspicions based on scientific evidence that <hes> a great deal of the regionality powers are based just in the existence of a population of adult stem cells that reside in a fairly random way in their body plan and we know that the cells are activated open amputation. We also know that cells are activated needed <hes> whenever some of the tissues in the animal old <hes> and die <hes> the cells will divide if we understood this process. What could that mean for us humans for our health? The hope is that by understanding the life forms that inhabit the planet with us that that will allow us to understand our biology better and <hes> we believe that this is an accurate approach to understanding life because we now no no that many of the genes that populate the genomes of these very diverse and very different species from us we have in our own genome. There's a high degree of similarity between the genes that are present in the plenary Marion genome the flat wound genome and in the human genome so I think that if we understand their biology and how they do this this will help us inform our own biology and figure out ways to perhaps reactivate those processes or modified let him in such a way in their own bodies that we might help mitigate <hes> damage to our own tissues or restore <hes> missing structures that <hes> maybe traumatic injury or degenerative diseases or something of the like they were a lot less complex than US obviously right and I'm thinking now there's certain things that we also can regrow like our fingernails and our hair and our skin so is it just that we're too complicated located to regrow like you know a human leg is a pretty complicated thing so I would imagine it would be tough to we grow that are I agree with you except that <hes> there are examples in nature where that actually happens to organism's anatomy anatomy is as complicated as ours and they'll give you a good example which is that salamanders which are vertebrates they have spinal cord. Have Limbs are not too dissimilar from your mind."