We went to seattle to see how the city is dealing with homelessness, and find out why so many of its citizens are on the streets. Given the work you do, i think most people would think, well, thats a job that one can live off. Yeah. I think a lot of people are shocked when they find out that i work full time. Hey, larry. ticking its not easy to get to. But for centuries, pilgrims have made their way to a place where faith, mystery and miracles coexist. The story of these 11 ethiopian churches, each carved from a single block of stone, with no brick, no mortar, nor wood, is a creation story youll need to see to believe. ticking im lesley stahl. Im bill whitaker. Im anderson cooper. Im norah odonnell. Im scott pelley. Those stories tonight, on 60 minutes. ticking nicki hi, everyone. We just passed the one Year Anniversary of our 5g launch, so lets think about it. We were the first in the world to launch 5g mobile. We flipped the switch on 14 nfl stadiums and with 5g ultra wideband, we hit over 2 gigabits per second. And were gonna be in 30 cities by the end of this year. So thank you all. Hbut Mike Bloomberg became thele clasguy whoho mdid good. After building a business that created thousands of jobs he took charge of a city still reeling from 9 11 a threeterm mayor who helped bring it back from the ashes bringing jobs and thousands of Affordable Housing units with it. After witnessing the terrible toll of gun violence. He helped create a movement to protect families across america. And stood up to the coal lobby and this administration to protect this planet from climate change. And now, hes taking on. Him. To rebuild a country and restore faith in the dream that defines us. Where the wealthy will pay more in taxes and the middle class get their fair share. Everyone without Health Insurance can get it and everyone who likes theirs keep it. And where jobs wont just help you get by, but get ahead. And on all those things Mike Blomberg intends to make good. Jobs creator. Leader. Problem solver. Mike bloomberg for president. Im Mike Bloomberg and i approve this message. Stahl to grasp the phenomenal scale of youtube, consider that people spend one billion hours watching videos on it every day. It is the most used social network in the u. S. More queries are typed into the websites search bar than anywhere online except google, which owns youtube. But the site has come under increasing scrutiny, accused of propagating white supremacy, peddling conspiracies and profiting from it all. They recently agreed to pay a record 170 million to settle allegations that they targeted children with ads. Youtube is being forced to concentrate on cleansing the site. We visited the companys headquarters in san bruno, california, to meet Susan Wojcicki, the 51yearold c. E. O. , in charge of nurturing the sites creativity, taming the hate and handling the chaos. Susan wojcicki we have 500 hours of video uploaded every single minute to youtube. Stahl fi say that again. Wojcicki so, we have 500 hours of video uploaded every minute to youtube. Stahl that is breathtaking. Wojcicki it is, it is. We have a lot of video. Stahl and a lot of influence on our lives, and how we pass our time. Over a billion people listen to music on youtube every month. Its the planets top music site. Theres a childrens channel with over 44billion views. Do you let your children watch youtube, including the young ones . Wojcicki so, i allow my younger kids to use youtube kids, but i limit the amount of time that theyre on it. I think too much of anything is not a good thing. But theres a lot you can learn on youtube. I think about how youtube in many ways is this global library. You want to see any historical speech, you could see it. You want to be able to learn a language stahl make a soufflee . Wojcicki you wanna laugh, you just wanna see something funny. You want to do a soufflee oh, yeah, cooking. Cookings a great example. Stahl so is watching people binge eat. With the subject ukraine stahl a growing number of American Adults are turning to it for their news, sports, medical information. Its now mankinds largest how to collection. How to tie a tie, tie the knot, or speak thai. The site has produced whole new pastimes where millions watch strangers open boxes, whisper, sleep. Youtubes Artificial Intelligence algorithms keep recommending new videos so users watch more and more and more. Wojcicki happy friday stahl wojcicki invited us to the weekly allstaff meeting. Shes surprisingly downtoearth for one of the most powerful people in silicon valley, wojcicki and of course we had to have fun. Stahl where her trajectory started in an unlikely way. Wojcicki i owned a garage. And i was worried about covering the mortgage. So i was willing to rent my garage to any student. But then two students appeared. One was named sergey brin. The other was named larry page. They are the founders of google. Stahl yes, they are. Wojcicki but at the time they were just students. They looked like any other students. Stahl larry and sergey ended up hiring her as their first marketing manager. She was google employee 16. As the company grew, so did her role, and so did her family. She has five children. Google bought youtube on her recommendation, for over 1. 6 billion, and eight years later she became c. E. O. With a mandate to make it grow and make it profitable. And she did. Its estimated worth is 160 billion. Youtube makes most of its money from ads. Hello, lets do this. Stahl . Splitting revenue with people who create all kinds of videos. Instead of acrylic paint youre going to be using enamel paint. Stahl from doityourself lessons, to hiphop lessons. The more popular ones can become multimillion dollar entrepreneurs. Joe biden promised ukraine a billion dollars if they fired the prosecutor investigating his sons company. Stahl youtube also makes money from political ads, a thorny issue because some of them have been used to spread lies on social media. Facebook is facing a lot of controversy because it refuses to take down a President Trump ad about biden which is not true. Would you run that ad . Wojcicki so that is an ad that, um, right now would not be a violation of our policies. Stahl is it on youtube right now . Wojcicki it has been on youtube. Stahl can a politician lie on youtube . Wojcicki for every single video i think its really important to look at it. Politicians are always accusing their opponents of lying. That said, its not okay to have technically manipulated content that would be misleading. For example, there was a video uploaded of nancy pelosi. It was slowed down just enough that it was unclear whether or not she was in her full capacity cause she was speaking in a slower voice. Why would i work with you if youre investigating me . Wojcicki the title of the video actually said drunk, had that in the title. And we removed that video. Stahl how fast did you remove it . Wojcicki very fast. Stahl but not completely. We just did a search and there it was still available. The Company Keeps trying to erase the purported name of the impeachment whistleblower, but that, too, is still there. Which raises doubts about their systems ability to cleanse the site. In the 2016 election cycle, youtube failed to detect russian trolls, who posted over 1,100 videos, almost all meant to influence africanamericans like this video. Please dont vote for hillary clinton. Shes not our candidate. Shes a bleep old racist bitch. Stahl youtube is an open platform, meaning anyone can upload a video, and so the site has been used to spread disinformation, vile conspiracies, and hate. This past march a white supremacist livestreamed his killing of dozens of muslims in christchurch, new zealand. He used facebook, but for the next 24 hours copies of that footage were uploaded on youtube tens of thousands of times. Wojcicki this event was unique because it was really a madeforinternet type of crisis. Every second there was a new upload. And so our teams around the world were working on this to remove this content. We had just never seen such a huge volume. Stahl i can only imagine when you became c. E. O. Of youtube that you thought, oh, this is gonna be so fun. Its people are uploading wonderful things like wojcicki funny cat videos. Stahl funny. And look at what were talking about here. Are you worried that these dark things are beginning to define youtube . Wojcicki i think its incredibly important that we have a responsibility framework, and that has been my number one priority. Were removing content that violates our policies. We removed, just in the last quarter, nine million videos. Stahl you recently tightened your policy on hate speech. Wojcicki uhhuh. Stahl whyd you wait so long . Wojcicki well, we have had hate policies since the very beginning of youtube. And we stahl but pretty ineffective. Wojcicki what we really had to do was tighten our enforcement of that to make sure that we were catching everything and we use a combination of people and machines. So, google as a whole has about 10,000 people that are focused on controversial content. Stahl im told that it is very stressful to be looking at these questionable videos all the time and that theres actually counselors to make sure that there arent mental problems with the people who are doing this work. Is that true . Wojcicki its a very important area for us. We try to do everything we can to make sure that this is a good work environment. Our reviewers work five hours of the eight hours reviewing videos. They have the opportunity to take a break whenever they want. Stahl i also heard that these monitors, reviewers, sometimes, theyre beginning to buy the conspiracy theories. Wojcicki ive definitely heard about that. And we work really hard with all of our reviewers to make sure that, you know, were providing the right services for them. Stahl Susan Wojcicki showed us two examples of how hard it is to determine whats too hateful or violent to stay on the site. Wojcicki so this is a really hard video to watch. Stahl really hard. Wojcicki and as you can see, these are prisoners in syria. So you could look at it and say, well, should this it be removed, because it shows violence, its graphic, but its actually uploaded by a group that is trying to expose the violence. Stahl so she left it up. Then she showed us this world war ii video. I mean, its totally historical footage that you would see on the history channel. But she took it down why . Wojcicki there is this word down here that youll see, 1418. Stahl 1418 is code used by White Supremacists to identify one another. Wojcicki for every area we work with experts, and we know all the hand signals, the messaging, the flags, the songs, and so, theres quite a lot of context that goes into every single video to be able to understand what are they really trying to say with this video. Stahl the struggle for wojcicki is policing the site while keeping youtube an open platform. Wojcicki you can go too far and that can become censorship. And so we have been working really hard to figure out whats the right way to balance responsibility with freedom of speech. Stahl but the private sector is not legally beholden to the first amendment. Youre not operating under some freedom of speech mandate. You get to pick. Wojcicki we do. But we think theres a lot of benefit from being able to hear from groups and underrepresented groups that otherwise we never would have heard from. But with name calling of nazi or propagandist stahl but that means hearing from people with odious messages about gays. Mr. Lispy queer from vox. Stahl women. Sex robots stahl and immigrants i think the easiest way for mexicans to not get shot and killed at walmart stahl wojcicki explained that videos are allowed as long as they dont cause harm. But her definition of harm can seem narrow. Wojcicki so if youre saying, dont hire somebody because of their race, thats discrimination. And so that would be an example of something that would be a violation against our policies. Stahl but if you just said, white people are superior by itself, thats okay. Wojcicki and nothing else, yes. Stahl but that is harmful in that it gives white extremists a platform to indoctrinate. We want a flourishing, healthy white race. Stahl and what about medical quackery on the site . Like tumeric can reverse cancer; bleach cures autism; vaccines cause autism. Once you watch one of these, youtubes algorithms might recommend you watch similar content. But no matter how harmful or untruthful, youtube cant be held liable for any content, due to a Legal Protection called section 230. The law under 230 does not hold you responsible for user generated content. But in that you recommend things, sometimes 1,000 times, sometimes 5,000 times. Shouldnt you be held responsible for that material, because you recommend it . Wojcicki well, our systems wouldnt work without recommending. And so if stahl im not saying dont recommend. Im just saying be responsible for when you recommend so many times. Wojcicki if we were held liable for every single piece of content that we recommended, we would have to review it. That would mean thered be a much smaller set of information that people would be finding. Much, much smaller. Stahl she told us that earlier this year youtube started reprogramming its algorithms in the u. S. To recommend questionable videos much less, and point users who search for that kind of material to authoritative sources, like news clips. With these changes wojcicki says they have cut down the amount of time americans watch controversial content by 70 . Would you be able to say to the public we are confident we can police our site . Wojcicki youtube is always going to be different than Something Like traditional media where every single piece of content is produced and reviewed. We have an open platform. But i know i can make it better. And thats why im here. ticking the debate over section 230, the law that protects Tech Companies like youtube at 60minutesovertime. Com i knew about the tremors. But when i started seeing things, i didnt know what was happening. So i kept it in. He started believing things that werent true. I knew something was wrong. But i didnt say a word. During the course of their disease around 50 of people with parkinsons may experience hallucinations or delusions. But now, doctors are prescribing nuplazid. The only fda approved medicine. Proven to significantly reduce hallucinations and delusions related to parkinsons. Dont take nuplazid if you are allergic to its ingredients. Nuplazid can increase the risk of death in elderly people with dementiarelated psychosis and is not for treating symptoms unrelated to parkinsons disease. Nuplazid can cause changes in heart rhythm and should not be taken if you have certain abnormal heart rhythms or take other drugs that are known to cause changes in heart rhythm. Tell your doctor about any changes in medicines youre taking. The most common side effects are swelling of the arms and legs and confusion. We spoke up and it made all the difference. Ask your parkinsons specialist about nuplazid. Its the sleep number 360 smart bed on sale now. Can it help me fall asleep faster . Yes, by gently warming your feet. Can it help keep me asleep . Absolutely, it intelligently senses your movements and automatically adjusts to keep you effortlessly comfortable. Will it help me raise my game . Yup so, you can really promise better sleep . Not promise, prove. So i can be my best for these guys . Yes, and those guys. Sleep number. This is not a bed its proven quality sleep. Cooper with the days getting shorter and the temperatures colder, its sobering to think that on any given night more than half a million americans are homeless. In the last three years, according to government reports, cities on the west coast have seen a dramatic rise in the number of people who are unsheltered. Thats the term used to refer to anyone whos homeless, but not sleeping in a shelter. Theyre the people you see sleeping on streets or in parks, in tent encampments, or in vehicles. Why has the unsheltered population been going up at a time of economic expansion and low unemployment . One answer is rising rents in hot real estate markets. Take seattle and surrounding king county, which are booming thanks to highTech Companies, but now have the third highest number of Homeless People in the country. The seattle area is home to amazon and microsoft, but also to a homeless encampment called tent city three. In the shadow of interstate 5 in seattle, on a vacant strip of public land, this is tent city three. There are about 50 People Living here, without heat or running water. Thats ethan wood. Hes celebrating his third birthday. Hes lived in a tent for the past year and a half. His parents, tricia and josiah, told us ethan has an enlarged heart and suffers from bouts of asthma and croup so severe, theyve had to take him to the emergency room several times. Last winter, one of seattles coldest in recent memory, ethan was sleeping in a tent, covered with blankets, sandwiched between his parents for warmth. Did you ever think, well, this is not the place we should have our child . Josiah woods we dont want our son here. We dont want to be here. But as of right now, this is the safest place for us. Tricia woods absolutely. Josiah because we know the people, we know the rules, and tricia our family gets to stay together. Josiah and our family stays together. Cooper drug addiction is what led the woods to become homeless. For josiah it was meth. For tricia, heroin. They were living in alaska at the time. Josiahs parents took care of ethan while they both got treatment. Tricia came to seattle for rehab, and afterwards decided it was a good city for a fresh start. They say they havent used drugs in nearly two years. But its been hard to find housing. In may 2018, they tried to get a spot in one of seattles family shelters, but there was no room. They didnt want to split up into separate shelters one for men, and another for women with children so they found their way to tent city three, and decided to stay. Ethan woods oh, boy. Right there. Tricia oh, boy. This is our new home. Cooper this is one of several makeshift encampments in seattle that are allowed by the city. Decisions are made by camp residents, who are also required to do chores and take turns guarding the tents. But about every three months, all the residents in tent city three agree to pack up and move to a new location. Its an arrangement they make with the landowners who let them pitch their tents. No one wants a camp of Homeless People in their neighborhood for very long. Ethan here go. Cooper when we visited ethan and his parents in september, they ha