>> with that knowledge, then we can have complete confidence that a number of different vaccines can be rolled out and implemented in a population very quickly, very efficiently without any concern about inadvertent complication. >> you are talking about increasing capacity and flexity? >> yep. >> reporter: not just the pfizerer and astrazeneca vaccine are, but a combination of any covid vaccine. easing supply issues around the globe. not only that, professor heath said alternating vaccines could produce better overall protection against emerging variants. >> potentially with a prime boost of different vaccines, the broader response, the broader immune response that ensues will be sufficient to deal with, for example, the south african variant. >> reporter: it's like a

preemptive strike. >> perfect. >> reporter: better defense. >> yes. >> reporter: as unpredictable as the virus has been, two challenges ahead are certainties. global shortages will only worsen and the virus will continue to mutate. the results of these trials may offer the best hope yet in solving both. now, for those that have had a vaccine, it's unclear just how long that protection be llasts. the results of the trial may give us an idea of if we are better off switching it up next time. >> now, pfizer is conducting the first coronavirus vaccine trial involving pregnantwome4,0 et ane vainated to assess the safety and efficacy and see if the vaccine can transfer protective antibodies to newborns. the cdc said that vaccines should be offered to pregnant women, classifying pregnancy for more severe covid infections.

more than 51,000 pregnant women in the u.s. have been vaccinated without waiting for trial results. >> reporter: pregnant women have historicallially been exclude from initial vaccine trials due to the risk of unborn babies that results in a lack of safety data, but the coon indiv-- the pandemic made it a priority. the women in the trial do not know if they are getting the zax or a placebo. in her eighth month of pregnancy, she rolled up her sleeve for protection. not just for her, but more importantly for her unborn daughter. are you worried or happy you are doing it? >> i'm happy i'm doing this. i would be totally off base if i said i was not a little nervous. the 28-year-old from ft. worth texas who is home to a toddler,

said she and her husband discussed it extensively before signing up. >> it seemed like the best decision for me andmy family. >> they will have 4,000 healthy pregnant women from nine countries who are between 24 or 34 weeks of jegestation, half wl have a placebo, and they are asked to keep a symptom diary, recording if they have things like fevers. >> our hope is by getting the the vaccine, it transfers over the immunity to the baby. >> reporter: that seems like that's a really big deal. >> it iseses -- it is a big dealing, their immunity that they will get is from what mom passed to them. >> reporter: pregnant women are prioritized for vaccines in at least 21 states. but a recent pool in the u.s. found that more than half are reluctant to sign up. citing concerns over lack of

data. as an obgyn, were you nervous at all to administer vaccines to pregnant women? >> no, i wasn't. because i knew that the actual disease, the covid-19 infection in pregnancy was going to be worse than in the general population. >> reporter: it's recommended that covid-19 vaccines not be withheld from pregnant and nursing women. the cdc said no reports of miscarriages, still births or preterm births have been linked with the vaccines in women who became pregnant while participating in the initial vaccine trials. if you are not happy to be in a trial, don't do it. i'm just really excited that pregnant women will have this chance to be immunized for to make history with some answers. >> reporter: carpenter's daughter is helping to pave the way for future generations. as part of the trial, newborns will be monitored for the first six months of life. >> this is what soldme.

this could help my daughter and keep me safe, it seemed like a win/win. >> reporter: there's one documented case in the u.s. of a baby born with covid-19 antibodies after the mother was vaccinated when she was pregnant. pfizer told us the women in the trial who receive a placebo will get a real vaccine one month after birth. that is important because it's believed nursing mothers pass antibodies to their newborns through breast milk. pfizer expects the results from the trial in the summer of 2022. >> you are watching the "cbs overnight news." hey, i just got a text from my sister. you remember rick, her neighbor? sure, he's the 76-year-old guy who still runs marathons, right? sadly, not anymore. wow.

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now this morning we are taking the look at the future of farming from 2001 to 2016, the u.s. lost 11 million acres of farm land to development. we found a pioneering young farmer in kentucky who has utilized every ericer of land be and every bit of rain. >> this stretches for nearly half a mile and just as you start to take it all in, you realize that's only the half of

it. >> when we do something and we put our mind to it, we go massive. >> jonathan websedouiro pct for largest indoor farming operations in the world. growing row after rower after row of tomatoes. this greenhouse is the size of 58 football fields. so big you can't see where it ends. do you think of yourself as a farmer? >> yeah, this is farming. >> reporter: calling it app harvest is not clever talk. it's located in moorehead kentucky. >> we will be one of the food suppliers in the come. >> reporter: climate change is altering the weather patterns, it's changing where and how we grow our food. a lot of produce comes from california and mexico, two places now hit with frequent and

devastating drauts. kentucky is getting wetter and has location on its side. >> we can get to 70% of the u.s. in a one-day drive. whereas right now, you are importing product from mexico, coming two weeks on a truck. >> reporter: app harvest plans to build a dozen of the indoor grow facilities. they use rain water collected on the roof and stored in the pond, the size of 11 olympic swim withing pools. water is delivered to the plants in precise amounts so it's not wasted. >> once that rain water is in here, it only leaves as a tomato. >> reporter: it can grow year round and all night. when the greenhouse shows it's more colorful side. thanks to special grow lights that keep the 720,000 plants inside reaching for the sky. the company said that farming this way, uses 90% less water no, soil and results in 30 times more yield per acre than a regular outdoor farm. >> so you may be thinking, well

that's great for tomatoes, i would like to eat more than tomatoes. they said they can do it for any sort of vine crop, including cucumbers, bell peppers and berries. there's down side, building structures of steel and glass creates their own planet warming emissions and it takes energy to run the nighttime lights and the tomatoes cost more than the ones in mexico. but creating a new way to farm, is crucial. because the u.n. said that we need 60% more food grown, that will support the 9.3 billion people living on the planet. >> it's like 30 years away. we need to figure this out. >> webb has big backers and sitting on his board of directors is a legend the food world knows by just one name. >> and i was terrified. is martha going to like this tomato? so, martha stewart.

we got her a box, she calls, they are fabulous, and wonderful, and posted them on instagram and that was the moment we knew we had a winner. how are we doing? >> for webb, this hits home. he is from central appalachia, an area hit hard by the collapse of tobacco and coal. where 1 in 3 people live below the poverty line. >> you know, we shut down the coal mines and no one said what is next. >> reporter: app harvest has created 500 jobs in the one facility. the company has given stock options to its employees. >> we have people in tears. people had that never owned a car. never owned house. >> reporter: at the top of the vines we met up with sam smith, who used to harvest a different crop. tobacco. >> that came to the halt, and so did the money. so, it's hard to find, you know, good consistent work like this. you know, it's a blessing. >> reporter: webb believes he and his orange army are building a new future for appalachia. >> it's a run away freight

train. now it's a matter how big is it going to be? how fast are we going to go? >>

when you humble yourself under the mighty hand of god, in due time he will exalt you. hi, i'm joel osteen. i'm excited about being with you every week. i hope you'll tune in. you'll be inspired, you'll be encouraged. i'm looking forward to seeing you right here. you are fully loaded and completely equipped for the race that's been designed for you.

luck can change in two years are, steve hartman is back on the road with a story that keeps getting better. >> it was aurora, colorado, summer break, 2019, when we met middle school math teacher, and the student he just could not shake. >> you know how many pencils i went through this year. >> like way more than you should have? >> yeah. >> damian said that mr. lanning was one of his better teachers. th er.l, a o a oveain. >> reporter:ayav wbar. >> yeah, like leave me alone, i will leave you alone. i will get my work done. gl >> he is smart and funny and he stood out and one day he came to me and he said, i'm not coming epasr: wleard damian

was in foster care. that he kidney disease and because social services could not find a poster family willing and able to meet his medical needs, damian had to leave school and move in to a hospital. but here's the real kicker, the kid needs a transplant. desperately. and a lot of times you can't get a transplant if you don't have a stable home to return to after surgery. >> you cannot sit across from someone that you care about and know you have room to help. >> reporter: and that's how fin became a foster parent. he took in damian, dialysis neds and all. even though prior to the hallway meeting he was a confirmed bachelor who delighted in his child alsoness. >> i did not think i could take them with me and still survive. >> reporter:damian said, right back at you bro. >> i said, yeah, i get out of

the hospital. and i was like, my math teacher out of all people. >> reporter: they got along famously, but damian refused to get too excited he saw fairytales fall apatfobe but some team actually do that.t they will like just kick you out. they will be happy with you one day and then just kick you out the next. >> reporter: i suppose only time will let you trust. >> yeah. >> reporter: it's been nearly two years since we first told the story. damian was able to get that transplant and he is now a much healthier, very typical 15-yeaold. >> even though it's been absolutely the hardest t thing have done. nuli otdra t will keep him. >> reporter: a few months ago, fin adopted damian. teacher and student, now father and son. >> to be accepted. feels like a dream come true. >> proof that sometimes fairytales do end happily. ever after. >> steve hardman.

cbs news. on the road. >> and had that is the overnight news for this wednesday. reporting from the nation's it's wednesday, march 24th, 2021. this is the "cbs morning news." boulder mass shooting. new details emerge about the victims and the suspect's history of rage. the other side. a smuggler talks about how he sneaks migrants into the u.s. paying it forward. $900,000 is raised for an elderly chinese woman brutally attacked in san francisco, but she has other plans on how to she has other plans on how to use the money. captioning funded by cbs good morning. good to be with you. i'm anne-marie green. this morning, we are learning new details about the alleged gunman who opened fire at a