. >> reporter: dario here to have his wisdom teeth pulled. one is actually growing sideways. but the 24-year-old has an even bigger challenge because a year ago he was paralyzed in a snow boarding accident. >> yes, ruined my spinal cord. it was originally severed i guess. >> reporter: but along with this anxiety, this trip to the oral surge is also giving him hope because wisdom teeth are a great source of stem cells. >> they're located in the pulp of the teeth. that's where the magic is. >> reporter: stem cells seem magical because of their ability to grow new human tissue. >> they're involved in both repair and regeneration. >> reporter: dr. klein is a stem cell researcher at ucsf and become a consultant to a company that collects and multiplies stem cells from teeth and freezes them, waiting for the day science gets them to regenerate other things like spinal cords. >> there's no promise that there will be a utility for it, but our depress -- guess and hope is that over time. >> reporter: they consider saving dario's teeth as an insurance policy. >> i'm trying to stay in s

darÍo francheskini y dijo que era necesaria 1 respuesta mucho mÁs amplia ante la escalada de la emergencia1 paro cardio respiratorio. con esto y con diabetes tipo 2, la solución aún está en mí. por eso elegí trulicity, que no es insulina. la insulina la produzco yo y trulicity ayuda a que mi cuerpo la libere, para reducir el azúcar en la sangre. uso trulicity solo una vez a la semana, funciona 24/7, empieza a actuar en mi cuerpo desde la primera dosis y podría perder un poco de peso. trulicity no es para personas con diabetes tipo 1 o cetoacidosis diabética. tampoco si eres alérgico a trulicity o si tú o tu familia padece de cáncer medular tiroideo o síndrome de neoplasia endocrina múltiple tipo 2. interrumpe su uso y llama al médico de inmediato si presentas reacción alérgica... un bulto o hinchazón en el cuello... o dolor de estómago severo. serios efectos secundarios pueden incluir pancreatitis. el uso de trulicity con una sulfonilurea o insulina aumenta... el riesgo de niveles bajos de azúcar en la sangre. efectos secundarios incluyen náusea, diarrea, vómito, dolor abdominal y pérdida

. >> reporter: dario berti is engineering androduction manager with the company building the mose project. construction began in 2003, testing, in 2013. if this is the first project of its kind, how can you be so sure that it's going to work? >> ( translated ): well, ts is thresult of years and years of planning and experiments on models, trials in tanks. it's been tested in all possible condions. so, we're certain it will work. there hasn't been technical reviews about whether they are doing the right thing. and thai do find seriously alarming. >> executive director of a nonprofit group calledre here venice, which is trying to raise awareness of the challenges facing venice. >> so there a lot of concern among venetians that the work isn't being done properly. >> it's not just amongst venetians, articles have been published in national newspapers, international journals. they have a problem about sand building into the indentations ls the lagoon floor, whether paave to lie back down again. they found that the nges, they've started corroding much sooner than they thought they would. they a

it's exploration dario our values and principles that demand so that but we have bought that book live on ted other people know about it said. the participants are seeking consensus on all the decisions the 1st vote is on the introduction to the declaration of the protocols because of the society ecosystems is on the horizon and son is married and it's what happens in the next most of the years this is the future of humankind the lead to extinction is a possible outcome a dream of this clear asian intent. those who agree wave their hands. on position. and i'm just saying this we improve this if we are able to make some just phrasing changes i think that's what we want to do just that you don't get angry with us. i don't think anybody's. but of course the word you can be changed in the whole the can be changed and you move probably change still is there any strong opposition against this proposal. good it was. the next day the students demonstrating lows on. the school strikes polarize opinion. which may well be why they've succeeded in sparking debate about climate protection in many c

doing great reporting with andrew dez dario. new polling data in the campaign from nbc news and the wall street journal. plus, she has a plan but is it a realistic one? what we could expect from national security adviser john bolton should he testify on thursday. that's up ahead. p ahead. p ahead. mended memory support brand. you can find it in the vitamin aisle in stores everywhere. prevagen. healthier brain. better life. liberty mutual customizes your car insurance, hmm. exactly. so you only pay for what you need. nice. but, uh... what's up with your... partner? not again. limu that's your reflection. only pay for what you need. ♪ liberty, liberty, liberty, liberty ♪ billions of problems. morning breath? garlic breath? stinky breath? there's a therabreath for you. therabreath fresh breath oral rinse instantly fights all types of bad breath and works for 24 hours. so you can... breathe easy. there's therabreath at walmart. some farms grow food. this one grows fuel. ♪ exxonmobil is growing algae for biofuels. that could one day