easy. awesome. xfinity. the future of awesome. ♪ this is "nightline." tonight, the children of auschwitz. 75 years after the liberation of the concentration camp. survivors of the nazis. >> i was 5 1/2 when i arrived to auschwitz. >> returning with david muir to make sure the world never forgets the holocaust. >> the world needs to know. plus, cbd craze. the front lines of the booming business. the biggest trend in wellness. a wounded warrior says it broke him back from the brink of

opioid addiction. and a soccer star hopes to make it part of athletes' training routines. but is it a cure-all? and the rare behind the scenes access from private jets to massive sets with the globe trotting headliner. starting with some sexual healing. here now, byron pitts. good evening. thank you for joining us. the survivors of auschwitz, sharing their painful memories and stories of survival with david muir. returning to the camp, and promising to keep the stories alive forever. here's david muir.

75 years later, the stories from inside this gate are no less haunting. the electric fences still standing from one of the world's darkest times, when families and children were lined up, brought here by the nazis, in this piece of video, some of the youngest faces, the survivors, and we wanted to find them. >> my name is tova freedman. i was 5 1/2 when i arrived to auschwitz. >> my name is michael. i was 4 years old. >> i was 13 years old when my family and i arrived in auschwitz. >> i was 11 when i arrived in auschwitz. >> i'm claire hymann. i was 18 years old. >> my name is david. i was 16. >> my name is lois. i was 16 when we came to auschwitz. >> reporter: for 75 years, they have quietly made new lives all over america. devoted to their jobs, to their families, to their history. more than 1.1 million people were killed by the nazis in

auschwitz. nearly a million were jews. >> this is me. i'm 6 1/2. >> reporter: tova is on the far left. you're pointing to your number here. >> yes. >> reporter: tova's mother tried to protect her daughter in the face of such evil. your mother never lied to you. >> never lied to me. from the very moment i could understand, maybe i was 3 or 4 years old, she told me what was going on. >> reporter: she was doing it to protect you. >> in fact, when i see a german moving towards me, move to the side. never, never, she said to me, face a soldier. and no eye contact. don't look into his eyes. that's what she told me. >> reporter: she remembers the day, what her parents said. >> we're going to auschwitz. the trains were waiting. the kennel cars were waiting.

the noise was incredible. the screaming of the people, crying. people knew where they were going. >> reporter: and when they arrive at auschwitz, they are told to undress. her mother then telling the truth. >> she pointed to the crematory. if we're not perfect -- i knew what she meant. i got undressed, and i'm saying to her, how am i? how do i look? she said, you look great. you'll be okay. i'll be okay. >> reporter: tova and her mother are separated. so few children survive. but the ones who did describe the same crushing moment, the separation. irene on the far left with a scarf around her head. her family brought in on a cattle car, too. >> all of a sudden the crowd moved and we went up. >> reporter: her family was next. >> separation was in ten seconds. my mother and two little boys were immediately sent one way. and i suddenly realized something very terrible happened

to our family. >> reporter: she would never see her mother again. and she watched as women and children were sent to the gas chamber. >> the horrible, blood-curdling screaming and praying, and i blocked my ears with my fingers because of the incredible anguish. and soon, it was quiet. and within a very short time i could hear the train, the next train and the next train. >> we want to see, when are we going to see our mothers? we want to see our mothers. >> reporter: lois pleaded for her mother, too. >> she says, oh, you want to see your mothers? you see the smoke over there? that's where your mothers are. >> they all went to the right. and they sent me to the left. and i never saw the family again. it was everything in a rush. each officer had a cane in his

hand, and he said, "make it fast." it was shocking that all of a sudden you see that you are alone. and just before, you were with your parents. i never cried. there was nobody to cry to. >> reporter: tova's tears were silent, too. and she remembers getting the tattoo. >> what's your name? i gave them my name. she says, that's not your name anymore. your name is 27,633. and she said you have to memorize it. if you don't answer to this, you'll be shot. >> reporter: and to this day you remember the number. 27,000 -- >> yes. >> this is my number. >> reporter: peter remembers arriving, too. he's on the left. he was a twin, which meant there was a new kind of horror. dr. joseph mengele conducting experiments on the children. they would ask for twins.

>> first, my mother didn't know what to say. so she didn't say a word. second time, third time, she said, yes, i do have twins. and immediately, two soldiers grabbed us, and i had no chance, even the slightest chance to say good-bye to my mother. and that's the last time i saw her. >> reporter: so few children were spared at auschwitz. they were too young to work. and the nazis did not want young witnesses. tova remembers when it was her turn. >> i went to the crematorium. i remember. i didn't mind. because they gave us something delicious to eat in the morning. and i hear my name. and i said to myself, who knows my name? must be my mother. >> reporter: her mother, separated months before, sees tova through the fence. she asks, where are you going? >> and i said, to the crematorium. and they started screaming. and i remember turning to the little girl next to me, and i

said, why are they screaming? every jewish child goes there, so now we're going there. >> reporter: tova arrives. >> go down the steps. and then you open this door, and there's a gigantic room with a cement floor. and all around are hooks. hooks with numbers. and this is the announcement. get undressed. look at the hook, the number that you put in your clothes, because after you have the showers, you will find your clothes again. >> reporter: that's what they would tell the children before they were gassed. but suddenly, tova remembers chaos, shouting. they ordered them to get dress again. something had gone wrong in the crematorium. she would walk back. >> and i hear my mother's voice again. my name. she says, what happened? and i remember saying it in a

very loud voice. they couldn't do it this time. they'll do it next time. >> reporter: what the children did not know, the soviets were closing in. and so the nazis began sending thousands on death marches. some of the most desperate running toward the fences. >> the worst part was when you see people running to the electric fence, that was unforgettable scenery for us. >> reporter: but amid the madness and chaos, tova's mother finds her. they stay behind, hiding in a women's hospital among the bodies. >> get in. so i got in without asking anything. and she maneuvered my face so that my breath was toward the floor. i don't know how long it took, but i heard germans coming in, shooting, shooting. i could hear the boots. i always heard those german boots. i stopped breathing. they moved on. >> reporter: the nazis left, setting the place on fire. >> and then i smelled smoke.

and then my mother took off the blanket and said to me, they're gone. just those words. they're gone. >> reporter: you had survived. the survivors tell us they will never forget that day. >> i said to myself, finally, we are free. you have no idea what that feeling is for an 11-year-old kid. >> reporter: and when they find david marx, he, like so many of the children, was too weak to show any joy. >> we didn't have the strength to be happy or grieve. you could have the work. you had to work. >> reporter: january 27th, 1945. >> right, the russians liberated us. they came in. >> reporter: and from then on you considered that day your birthday. >> absolutely. >> reporter: and in that photo with tova, on the far right, michael bornstein, who was in the infirmary. he survived, too. and years later they would meet, and he's about to turn the corner again.

>> hey, tova, how are you? >> reporter: the only reason michael is here is because he was in the infirmary when the soviets arrived. you were saved by sickness. >> that's right. >> reporter: michael's mother, like tova's, always told him the truth. she would always say, this, too, shall pass. his father was killed. his mother was sent to another camp. but he and his grandmother would survive. and months later, walking through their old town, they spot his mother, who had made it back from that labor camp. >> my mother, just disbelief, because she never thought she would find me again. >> reporter: her son was alive. >> yes. >> reporter: his mother would save all of her money, and when he was a teenager she gave him a watch which he carries with him today. >> on the back it has hebrew

letters that stand for, "this, too, shall pass." >> reporter: those words from his mother again, thistoo, shall pass. and 75 years later, the children in that image, tova and michael together. do you consider yourselves lucky to have found each other? >> i think it's a miracle. >> i think it really is. >> it's a miracle. >> reporter: they are going back to auschwitz. there's lois, who waited to tell her own children. >> when my children were little, they only asked me once, how come their friends have grandparents and they don't. so i started crying. and my children never asked me another question. >> reporter: now lois on the plane, going back. >> i didn't want to go back at all. but this is something different.

>> reporter: and claire hymann, who always believed the only reason she and someo of the other children survived was their strength. she thought, even then, we must get out. >> i had the willpower. i had a lot of willpower. i said we have to survive to tell the world what's going on. we have to do that. otherwise nobody would believe us. >> reporter: peter is preparing to go back too. but this time he says he will not believe that famous sign over the gate which says work will set you free. >> it means work makes you free. don't ever believe it. >> reporter: peter is going back because he says with every year that goes by, there are fewer survivors to tell their story. >> i came to the realization that within 10 to 15 years, there will be no eyewitness survivors to tell the story of the holocaust as an eyewitness.

people can come around and say, hey, it never happened. and here we are to say, yes, it did happen because of me. we're eyewitnesses. >> reporter: when we come back, the children of auschwitz return, and what they find when they get there.

actions speak louder than words. she was a school teacher. my dad joined the navy and helped prosecute the nazis in nuremberg. their values are why i walked away from my business, took the giving pledge to give my money to good causes, and why i spent the last ten years fighting corporate insiders who put profits over people. i'm tom steyer, and i approve this message. because, right now, america needs

more than words. we need action. >> reporter: it is a long and painful journey, 75 years later, but the children of auschwitz, the survivors, believe they have a duty to remind the world how perilous and devastating unchecked hate can be. irene weiss, who made a new life

in america, a wife, mother, grandmother, and great grandmother, making her way back. we are with them as they board the flight. >> enjoy your flight. >> thank you, dear. >> reporter: michael bornstein with the watch his mother gave him. >> thank you. >> reporter: and lois is ready too. david marx, the carpenter from sherman, connecticut, a father, grandfather, and great grandfather, remembering the list of survivors all those years ago. >> they brought lists from each camp, and they printed it, and they put it out so you should see who survived. >> reporter: now he will see them in person. it's his first trip back. they board the bus in poland. one hour to auschwitz. 75 years later, they are back. they slowly walk through that gate, and they walk proud. survivors who have returned with a message. and we see tova. tova. >> oh, hi. >> reporter: and tova puts to words why they have all come back. >> that we didn't forget.

that i remember the little girl going into the crematorium, and she wouldn't come back, that i played with. >> reporter: you remember them. >> i will remember. that's what it is, we remember. >> reporter: and there's david marx, who has never gone back. >> but now it's -- i'm getting in the fourth quarter of my life. >> reporter: he lived in barrack 21 in auschwitz. 1,500 children in this barrack alone. years later, he did not tell his own children. they never saw the tattoo. >> they never saw the tattoo. >> reporter: at 91, he now says it's different. >> they should know what happened. they should know that never again. >> reporter: and tova, who bravely went inside the crematorium. she said it is important the next generation see this, too.

and while inside she offers a prayer for the dead. >> say a prayer for the dead. say a prayer for all these people. >> reporter: and then she asks her family to go in, too. >> go inside, go all the way. >> okay. >> until the ovens. it's not okay to destroy somebody who doesn't think like you, doesn't look like you, doesn't believe in religion like you. >> reporter: tova's daughter-in-law sarah when she comes out. why was it important for sarah? >> she's the generation that has to teach her children. she's the mother of my grandchildren. >> reporter: and lois, carrying the same message she shares with schoolchildren back home. >> do not discriminate. do not look at religion.

do not look at color. do not look at nationality. treat everybody the way you want to be treated. and if you do that, things will be okay. otherwise, it can happen the same thing as it happened to me. >> reporter: lois is proud of the new life she made in the u.s. she has three children, five grandchildren, 12 great grand children, and now a 13th on the way. >> hitler destroyed my whole family. he tried to kill me also. he is dead. and i built a beautiful family that i'm very proud of. that's it. that's my life. >> reporter: and like so many of the survivors, tova says she is

here so that the world will not forget. the world needs to know this can't happen. >> the world needs to know, and to beware of this evil, to stop the evil before it spreads. and this is the end of evil. our thanks to david. coming up, the cbd craze, the booming cannabis business, now raising questions.

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it is the biggest trend in wellness -- cbd. it's made from the cannabis plant. while lots of people swear by its therapeutic benefits, others remain skeptical. here's ashan singh. >> reporter: for sergeant ben heyhurst, this is peace. >> there's great therapy in

using your hands. a few years ago i started making knives. that's become the passion of what i do. >> reporter: the journey of one of heyhurst's knives, through the fire, cracked and beaten only to emerge stronger and with new purpose, parallel to his own. >> i was an army infantryman, deployed in 2004 to 2005 to iraq. >> reporter: his unit part of the siege of sadr city, now known at black sunday. >> it was 19 of us in 4 humvees that were hit. a large-scale ambush. i think a lot of us believed we weren't going to get out of there. i got hit. when the bullet came through the wall, it wasn't just the bullets, it was chunks of concrete and metal. i thought i would die. >> reporter: he found comfort with dependance on opiates. he became lost.

until he says a plant and three letters, cbd, helped him live his life again. do you think all this would have been possible if you never got off those pain meds and on to cbd? >> i was in a bad place on pain meds. on and off suicidal, and without that change, i don't know that i would be here. >> reporter: heyhurst now lives with his family in elk, washington. he takes cbd oil with his coffee every morning. >> i notice it throughout my whole body. the pain level just drops. >> reporter: cbd. you might say it's marijuana's friendly cousin and the "it" product of 2019. the cbd market is predicted to reach $20 billion by 2024. we are taking you inside the cbd craze, from the fields to the facilities. meeting some of the pioneers of the booming industry along the way.

skeptics are calling it snake oil while believers are calling it a cure-all. there's one big question to start with -- what is it? >> it's cannabadiol, 1 of over 140 cannabinoids in cannabis plants. >> reporter: the jury is still out on what exactly cbd does, but according to this doctor we do know, it can affect transmitters in the brain. >> for example, it modulates serotonin. it also impacts on inflammatory process processes. >> reporter: cbd is in both marijuana and hemp, both forms of cannabis. the difference, hemp has less than 0.3% thc and doesn't get you high. just over a year ago, president trump signed the 2018 farm bill which legalized hemp, opening the door for the cbd boom. >> really revolutionized the u.s. >> reporter: but where does cbd

come from? heyhurst uses the brand war fighter, a company geared towards veterans. we traveled to colorado to meet an agronomist. >> it works for veterans that have had ptsd or are trying to get off opiates. >> reporter: harris runs colorado cultivars, a commercial hemp company. when we come back, we join damien for a tour of one of the largest hemp farms in the country to see how cbd goes from this to this.

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>> reporter: we're in

wellington, colorado, and i'm surrounded by 600 acres of industrial hemp. this is where cbd comes from and it's where colorado cultivars supplies over 40 brands with their products. it's late in the season. the bright green flowers are dried and ready for harvest. so damien let us take a ride. i got it, i got it. sweet. >> the green rush. not the gold rush, the green rush. >> reporter: we just got out of the combine where they finished harvesting a bunch of the hemp. now it will be sent to processing where the cbd will be extracted. >> the hemp flowers and buds come in wet here.

we're doing about 2000 pounds an hour. >> reporter: as far as processing facilities go, how large is this one? >> we are probably in the top three in the united states. this whole facility was not even here a year ago. >> reporter: and the fact of the matter is, most cbd products even from hemp have trace amounts of thc, which could beltway major turnoff for some, especially those drug tested for work. it's something u.s. soccer star megan rapinoe struggles with. >> there's certain periods where thc is banned but cbd is legal. anything you put in your body is your responsibility. that's the blanket disclaimer. >> that's why megan joined her twin sister rachel to start mendi, what they say is a line of thc free cbd products. megan uses it as part of her recovery process.

you're taking cbd for more than just pain. >> yeah, i think so. i look at it as an overall approach to health in my life. >> reporter: for her sister rachel it's a chance to change the game and how athletes manage their pain. >> it became very clear to me after using cbd for three years, that this stuff works and we need to do a better job of taking care of our athletes so my solution was a the start a company. >> reporter: the industry is the wild, wild west. how do you navigate this? >> some of us are trying to do it the right way. as the fda comes out with regulations we hope it's going to wean a lot of the bad eggs out. >> reporter: companies like mendi and war fighter are taking it upon themselves to insure quality, sending to third-party labs like this one for testing. >> i think that unfortunately the public has to do their own due diligence because the regulations have not been strong enough. >> reporter: as it stands, the

fda has only approved cbd in a form which treats two severe and rare forms of childhood epilepsy. >> other than that, the fda doesn't approve it. why? research is needed. >> reporter: the fda issuing notices that cbd could have risks. >> there's never been a wonder drug, but can cbd help certain conditions for certain disorders? absolutely. but we need more clinical trials to be able to give the fda evidence for them to make this decision about that. >> reporter: what do you have to say to people who say, this isn't real? it doesn't work. >> i would say, like, try it first. not going to do every single thing, but i think that there are a lot of tangible benefits. >> reporter: there's such little medical research done on cbd. does that concern you? >> i think about it. it doesn't bother me as much. all i see is the positive benefits. >> reporter: it's almost 15 years since you were discharged. how is sergeant ben hayhurst doing now?

>> better every day, i would say. whatever happened in my past, the memories will never go away. i still deal with daily pain, but the main thing that hurts me is just anxiety. i feel like that will always somewhat be there, but i feel like i'm learning to deal with it through cbd and therapy and just learning to accept myself for who i am. up next, emily is making a splash with her modeling. and now her sexy message with a feminist twist.

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emily ratajkowski, a super model known for baring it all. now on a fast track to be the next fashion mogul.

with her own feminist message. here's rebecca jarvis. >> reporter: she's a supermodel, actress, and businesswoman. emily ratajkowski, one of today's biggest celebrities and among the most influential women on social media. and on this night she's receiving an award for fashion entrepreneur of the year. taking selfies and catching up with stars like zendaya with her husband sebastian by her side. it's just one of the many highlights in what's been a whirlwind of a career for 28-year-old ratajkowski, known to her fans as emrata. >> please join me in celebrating the amazing emily ratajkowski. >> reporter: so who is emily ratajkowski? >> she's pretty sassy, i would say. i think she really represents confidence.

>> reporter: with almost 25 million instagram followers, emily ratajkowski isn't just a social media star. she's influencing the culture with her own distinct message of body positivity and feminism. what is your brand of feminism? >> it's just about the ability to choose, to be whatever kind of woman you want to be. to dress however you want, whether it be in a burqa or a bikini. >> reporter: she's turning heads and raising eyebrows with her skin-baring posts. why do you think of nudity as expressing yourself as a feminist? there are definitely people who would say that is not the case. >> i don't actually believe that nudity is expressing yourself. i think choosing to represent your body however you choose is an empowering thing. but i don't think that every woman needs to be naked. it's about choice. >> reporter: you came to kim kardashian's defense when piers morgan was making derogatory comments about her posting a

nude selfie. how important is it to you to really own the narrative? >> we shouldn't be taking women for how they represent themselves or their body or even their sexual past and judging them for those things because that's just not something we do with men. for me it's not even about taking the narrative into my own hands. it's about calling out moments where there is inequality and unfairness. >> reporter: ratajkowski burst onto the scene in 2013, starring in robin thicke's "blurred lines," which sparked controversy for its hypersexualized music video and lyrics. what did you think when the controversy started around that video? >> i wasn't surprised, but the director and the dp were women. i felt very comfortable with the sort of things that maybe some people deemed controversial. i understood what the idea was, and i liked it. >> reporter: what did you like about it? >> i liked that these women in this video were depicted as not taking themselves too seriously,

not taking these men at all seriously, and that there was a lot of humor behind it. it was about having fun and women sort of embracing their bodies. >> and emily ratajkowski joins us now. >> reporter: her career quickly catapulted from there. she started booking acting gigs. her first major movie -- >> oh, my god. >> reporter: "gone girl" starring as ben affleck's character's girlfriend. and as amy schumer's friend in "i feel pretty." >> you were dumped? >> can you stop saying dumped? >> of course. i'm sorry. i just assumed that you wouldn't have to deal with stuff like that. >> because of my body? >> reporter: all the while gracing cover after magazine cover. and now running her own clothing company. inamorata. the brand does 96% of its business via instagram. you post things and they sell out within minutes. >> yeah. it's wild. it's really crazy. >> reporter: what ended up leading you to create your own company?

>> it was sort of a long road with many different elements. definitely always been drawn to fashion. also i think doing a couple licensing deals, and seeing sort of, like, wow, they are able to really use my name and my image in a way that's super beneficial to their brand, why shouldn't i do that myself? >> reporter: ratajkowski self-funded the business and teamed up with her best friend, cat mendenhall, who has a background in fashion sales. >> we met in high school. she was a freshman. i was a senior. >> reporter: ratajkowski handles creative. mendenhall, the business side. >> this is the start of inamorata. where it all begins. all the magic happens. it's her brand. no one else is telling us or dictating how things should be done. >> reporter: ratajkowski sketches her ideas. they become reality. and her followers can't get enough.

even in her downtime, she says she's still thinking about her brand. we're on a walk. if i wasn't here, would you be thinking about something related to your product? >> when you're building a brand and company, you always have to be thinking about how you're building that. i'm genuinely pretty obsessed with branding and with my company. so it isn't, as much as i share him, it's the same thing as sharing inamorata. it feels natural. come on, bud. >> reporter: in this instagram-obsessed world ratajkowski seems to have mastered the art of sharing her life while still finding quiet moments like these just for herself. for "nightline," i'm rebecca jarvis in new york. next, 48 hours with kygo. a

tis better than the criminal in democrathe white house.esident we all have progressive plans to address the big challenges facing our country. what makes me different, is i've been working for ten years outside of washington, to end the corporate takeover of our democracy, and to return power to the american people. i started need to impeach to hold this lawless president accountable. i'm proposing big reforms like term limits... ...a national referendum... ...and ending corporate money in politics. as president, i'll declare climate change an emergency on day 1. and, use those powers to finally address the climate crisis. and, i've spent 30 years building a successful international business. so, i can take on donald trump on the economy - and beat him. i'm tom steyer and i approve this message -

because there is nothing more powerful than the unified voice of the american people.

you might not know his full name, but you probably know his music. kygo, one of the world's most popular djs. bringing to life fresh remixes of vintage classics. we are with the all-star for a rare glimpse of his life. here again is ashan singh. >> let's go! ♪ >> reporter: we are at a pool party in vegas and whitney houston is blasting. >> it's an amazing feeling. everybody knows the lyrics.

everybody sings along. i see the smiles on faces when i play it. that's definitely a good feeling. >> reporter: meet kygo, the man responsible for giving the late legend her most recent hit. ♪ how did that come together? >> she was signed to the same label i was, and they had this song laying around that she covered in 1990 or something. ♪ bring me a higher love >> the chorus is so powerful and whitney houston is one of the most legendary artists of all time. to me it was unreal to get the opportunity. >> reporter: it's a far cry from where it all began, a kid from norway with a passion for piano. now he's one of the most popular djs in the world. from his residency in vegas to headlining in toronto and back. he gave us a glimpse of his life over one weekend.

two countries. ♪ three shows. 48 hours with kygo. >> what's up, vegas? ♪ >> reporter: what's it like knowing that all these people are here just to see you? >> it's definitely very cool. vegas is always a fun place to play. always new people coming in every weekend. it's always a good crowd here. >> reporter: how did you actually start becoming a producer? >> i got a mini keyboard and i just used the tutorials every time i didn't know how to do something. i would just try to figure it out on youtube or just experimenting. ♪

>> reporter: about six years ago, he started remixing songs and posting them online, like marvin gaye's "sexual healing." ♪ baby i'd like for you to love me ♪ >> i was looking online for music on soundcloud and i came across kygo. i immediately hit him up on facebook. i was like, huge fan. love to work with you. he was basically like, yeah. his real name is -- that's how you say it in norwegian. kygo was his user name in high school. it's the beginning of his last name and last name. >> reporter: their partnership was a match made in heaven.

before they knew it the two landed kygo a record deal. >> i signed a deal and released "firestone." ♪ >> when they signed that deal i just felt like it was game time. >> reporter: two years later he'd release his debut album, "cloud nine." what was it like to release original music for the first time? >> it was a great thing. up until that point i was only doing remixes. some people on the internet thought my artist name was kygo remix because every song was like kygo remix. >> reporter: now he's collaborated with some of the biggest names in music. rita ora. ♪ you found me >> reporter: selena gomez. ♪ the dark side of the morning ♪ we were high and we were sober ♪ >> reporter: and ellie goulding.

♪ but i'd do it all again >> reporter: it's just over 24 hours after his show in vegas and kygo is headlining at toronto's music festival. about 40,000 fans are waiting for him to take the stage. >> just trying to get into the zone. i can't wait to show everybody what we got. ♪ ♪ >> reporter: who are some of your influences? >> in the electric world,

electronic music, avicii was the recent one. when i heard his songs i just connected with them in a different way. ♪ all this time i was finding myself and i didn't know i was gone ♪ >> "wake me up" was the biggest song ever. ♪ wake me up when it's all over when i'm wiser and i'm older ♪ >> i just knew that this is what i want to do. >> reporter: our weekend with kygo ends after 3:00 at a club in vegas. he's still going strong. just another day in the life. ♪ the "nightline" documentary short on kygo is streaming now on hulu. thanks for joining us on this special edition of "nightline." you can watch us every weeknight after "jimmy kimmel live" and on hulu

breaking news. the first american has tied of kroep virus in