a former vice premiere of sexual assault. and we begin with the chaos at atlanta's airport this weekend. things are now getting back to normal, but this was the scene on saturday after gunfire erupted inside the airport. now, travelers as you can see there, started hitting the floor in the security screenin g area. clearly you can see people are terrified there. that was the scene inside. outside, crowds of people began rushing away from the terminal. according to investigators a passenger was trying to get through airport security with a gun in his bag, but when tsa agents stopped him, he lunged and grabbed the gun and ended up firing it. that setoff the panic we just saw and sent other travelers running for cover. here's how one woman described the scene. >> people just came flying through and just were like, run, run, run. and then people were just running. and we all just ran outside this door right here and made our way across to the side of the airport and just -- it was organized chaos. >> so thankfully, officials say no one was shot, but at least three people were hurt in that rush you just saw to get out. and amid that chaos they say the passenger managed to escape with the weapon. on saturday atlanta police identified him as kenny wells, a convicted felon. they say officers are now actively searching for wells and several warrants have been issued for his arrest. the situation also unfolded, of course, during one of the busiest weekends of the year as americans travel ahead of the thanksgiving holiday on thursday. >> reporter: we're getting back to a sense of normalcy here at atlanta's hartsfield-jackson airport after the security incident that happened about 1:30 on saturday. so we know there was a passenger who had a gun that was in his bags, and at some point during the security checkpoint with tsa it was an accidental discharge. we're still trying to figure out the details as it remains under investigation, but we do know that passenger during the confusion, the chaos that ensued thereafter fled the airport. investigators are trying to track him down to investigate and speak with him. now, that created a domino effect of confusion and at some points chaos in the airport as people learned there was an active shooter. later they found out it was an accidentt discharge but that rumor spread very quickly throughout the airport and social media. and it stopped everything in its tracks. there was a temporary ground stop here at the airport, and now that caused some flights to be delayed and an impact on travel, which is why delta airlines is offering a waiver to passengers whose flight plans w were interrupted. this was supposed to be already a busy travel weekend ahead of the thanksgiving holiday. now you add in this accidental discharge and really disrupted awhat was happening this weekend. tsa reported they're seeing an alarming rate of guns trying to go through different checkpoints. in the first ten months of this year some 4,650 firearms were spotted at checkpoints by tsa. and in the first ten months of the year waefbl already surpassed the record number of more than 4,400 back in 2019. that's a concern not here just in atlanta but all across the country. but, again, things seem to be getting back to normal as the investigation continues as to how this happened on saturday afternoon. nadia romero, cnn, atlanta. >> as nadiy was just telling us, a record number of guns have been confiscated at airports across the united states this year. >> 450 firearms have been confiscated in the last year at the atlanta airport alone. people bring or try to bring or forget they have in their bag a gun. you are not allowed to have a gun unless you're law enforcement on an airplane. it has to be checked. it has to be in a special box. it has to be disclosed to the airplane line there are guns, so none of this is lawful behavior. >> now, as you mentioned earlier the chaos at atlanta's airport came amid that busy thanksgiving travel period, according to the tsa. friday broke pandemic air travel records in the united states. more than 2.2 million people went through security screenings. in all the tsa expects more than 20 million people to pass through u.s. airports during this holiday rush. and there could be more trouble on the way for those travelers with a significant storm system threatening to disrupt flights in the coming days. we want to bring in our meteorologist derek van dam. derek, there may be people getting up right now getting up to have that coffee at the airport. what should they know? >> tune in. it looks like the weather will steal the show to that holiday week of travel leading up to wednesday being one of the busiest travel days of the year, people heading home to see friends, family as well. again, it's really the wind. we aren't going to see much snow out of the storm system, but the wind could steal the show. here's a look at the delays today. people heading out the door, perhaps. some minor delays from d.c. to new york as well as boston. and you can see some of the moderate delays anticipated for chicago, o'hare down to atlanta. that's thank tuesday the approach of this developing storm and the winds picking up ahead of it. this is all thanks to a cold front going to progress eastward. you can see some of the precipitation associated with it at the moment. this is live radar from st. louis to chicago, some showery weather and even some of that weather tex ending to the east coast as well. looks a little more ominous than it will turn out to be. again, the winds will be the factor here. about 75% of delayed or canceled flights within the united states occur from low ceilings or low cloud tops and blustery conditions near and around the airports. so that's what we're going to monitor from the storm system that will press through for monday and tuesday leading up to thanksgiving day. you can see the weather will clear out quite nicely. and then we focus on thursday for the nation's midsection. some travel delays possible from chicago to dallas. here's a look at the wind gusts. you can see that will pick up today near chicago o'hare. and as we head into the day on tuesday and wednesday, significant winds forming across the upper midwest and towards the plain states. we could see gusts over 40 to 50 miles per hour, that will certainly delay the flights. and you start compiling all these factors on top of each other, the longer waiting lines with the screenings taking place at the u.s. airports, and this could obviously cause some delays. here's a look at the precipitation across the eastern half of the country. more rain than snow. that's the good news, but look out for those delays for many of the east coast cities. paula? >> yeah, i'm glad you mentioned it. many time it is the wind, so we all still have to be patient at the airports. still to come on cnn, new video apparently of a top tennis player not seen for weeks since accusing a chinese official of sexual harassment. plus, new rules to keep unvaccinated people out of public places leads to a second night of unrest in the netherlands. that story ahead right here on newsroom. no mess. just the soothing vicks' vapor for the whole family. introducing new vicks vapostick. have you ever sat here and wondered: "couldn't i do this from home?" with letsgetchecked, you can. it's virtual care with home health testing and more. all from the comfort of... here. letsgetchecked. care can be this good. my plaque psoriasis... ...the itching ...the burning. the stinging. my skin was no longer mine. my psoriatic arthritis, made my joints stiff, swollen... painful. emerge tremfyant™. with tremfya®, adults with moderate to severe plaque psoriasis... ...can uncover clearer skin and improve symptoms at 16 weeks. tremfya® is the only medication of its kind also approved for adults with active psoriatic arthritis. serious allergic reactions may occur. tremfya® may increase your risk of infections and lower your ability to fight them. tell your doctor if you have an infection or symptoms or if you had a vaccine or plan to. tremfya®. emerge tremfyant™. janssen can help you explore cost support options. now, we're following dramatic new developments in the case of missing chinese tennis star peng shuai. on sunday several members of chinese state media published several photos on social media apparently trying to show peng is alive, safe and well. remember peng hasn't been seen since she accused one of china's most powerful former leaders of sexual harassment nearly three weeks ago. you're going to see one video just published to social media. apparently it shows peng reading young tennis fans and signing autographs on oversized tennis balls. you see her there at the junior tennis finals on sunday. and this video is said to show peng having casual dinner with her coach and friends at a beijing restaurant on sunday. cnn has not been able to independently verify when any of those videos were taken. here's the thing, by putting out this video perhaps whoever thought this would put the controversy to rest, it hasn't done that. >> it's not. it's just raising more questions. in fact, here's more context about this fresh video that come out over the weekend. several individuals with links to chinese state run media have been sending out fresh footage of the iwhich these tennis star, peng shuai, on twitter, which of course is not available inside mainland china. so this is aimed scarily at an international audience in a series of clips that were released earlier today you see peng at what appears to be some sort of youth tennis tournament in beijing. and in some footage released last night we see peng shuai at a sichuan government restaurant, a popular one in beijing. she's seen sitting next to a popular chinese tennis director. and she isn't saying anything, but the people sitting next to her at the table go out of their way to emphasize a date, november 21st, which is of course today. cnn has not been able to independently verify the footage. it was november 2nd, over two weeks ago when peng accused a very powerful man, a former vice premiere of china of forcing her to have sex with him. she made this accusation on a social media platform in china. and within half an hour it was taken down. she has not been able to speak directly publicly since. and there is no coverage of her allegations on chinese social media let alone state run media. the womens tennis association has expressed concern about peng. they've been trying to reach out to peng shuai. they also have said they're willing to put their business, a very lucrative business in china on the line unless her allegations are properly investigated. just want to quickly show you. this is a statement from the wta in which they say in regards to the new video while it's positive to see her, it remains unclear if she's free and able to make decisions and actions on her own without coercion or in interference. this video alone is insufficient, unquote. back to you. >> we have some video and she wasn't speaking for herself in that video at all. in terms of the censorship here, it is fascinating. she has been completely scrubbed from the chinese internet, and yet this shows up on social media. >> yes, she's been completely scrubbed on the internet. in china there's no reporting again of these allegations of sexual assault on state media or social media in china. and the censorship has gotten to a point where even just tenuously linked comments about the case of peng shuai have been censored as well. last week you had naomi osaka go to twitter where is peng shuai. a number of commentators in china went to her webo and told her thank you. all her thank you were censored, and that was taken down. >> absolutely. a story we'll continue to cover obviously. thanks for staying on top of it with us from hong hong. meantime as international concern intensifies around the fate of peng and the beijing olympics are now 75 days away, the international olympic committee says it will not comment on the matter. in a quote to reuters the ioc says experience shows diplomacy is the best solution for kbegzs of such nature. this explains why the ioc will not comment any further at this stage. joining me now is a long time advisor to chinese leaders and multinational corporations and the author of the book "how china's leaders think." and good to see you again on what is a disturbing story for so many people. as much as many people have applauded the womens tennis association and their stand and obviously for good reason, here's the point that i think perhaps people miss. the key thing is how china will interpret what the wta is saying. >> this is certainly unprecedented. it's a moving story. we don't know all the facts. i assume the facts will eventually come out, but certainly this is unprecedented in china, for an ordinary citizen to level this kind of accusation against a senior leader albeit retired, but nonetheless a senior leader much revered in china. that said, the whole approach of china will be to protect the system because china believes that its system is responsible for all the success. china's second largest economy bringing 800 plus million people out of poverty, now moving toward what they call common prosperity. all those things they say are completely dependent upon the leadership of the party, which has been strengthened recently at the sixth plan in their political meeting where the party's in charge, xi jinping is the core of the party. xi jinping's thought will lead the party's ideology. so all of that and we're ledding toward the winter olympics which is very important in china, and suddenly this comes on the scene. so china will do everything possible to lower the heat on this story but will not compromise its core point about the absolute leadership of the party, which means that it will not be subject to pressure or make compromises with the so-called independents, what they say is western values. i think that is the one thing we can be sure of. >> and the other thing i want to get your take on, i mean whether it's the nba, other professional sports, tennis, businesses, you're saying the chinese stand firm. but also how do the chinese people usually interpret what's happened here? >> in past situations such as with the nba tweet about hong kong or about concerns about sheng jang and the uyghurs and cotton and all different issues, the great majority of the chinese people, i mean very large percentage support the government and support the actions of the government in hong kong, in tibet regarding taiwan, all of that because it is based on nationalism. nationalism is a very powerful human emotion. we see it all over. in china it has a special potency because of their sense of a sense of humiliation after china was the greatest nation and the most advanced in science technology and the greatest economy for a millennium before they went into this abject poverty. for past situations nationalism has trumped -- pardon that pun -- all other issues. this potentially is different because this is not a nationalistic kind of view. it involves the olympics in some way. it may transform into a nationalism. but right now it's not a nationalistic point of view. it's maybe a purian point of view, kind of soap opera. i hate to say that in that way. so it's different from the chinese people's point of view than the past situations which we think is the same. >> you know, there was talk this week in washington, president biden saying he's still considering perhaps a diplomatic boycott of the olympics. how do you think china will interpret that? >> the olympics are really important. other than the leadership of the party, the olympics is high there because it represents the pride of china, which is an important characteristic and showing china to the world. president xi has this concept of a human community with a shared future. that's his vision for the world. and the olympics are an exemplification of that. so highest level of importance to it. and so the calls for a potential boycott, a diplomatic boycott as the u.s. was -- it would be looked at as a horrendous affront to china. where this incident now comes in is it puts additional pressure on biden and other people to consider more seriously what they were considering anyway. there's a lot of pressure on biden to have a diplomatic boycott, not an athletic boycott but a diplomatic boycott, which is symbolic. but the symbolism is important. perception is reality sometimes. and my sense is that biden would like to listen to that but recognizes that in terms of his recent, you know, 3 1/2 hour conversation, this virtual summit with president xi which went well, which put guardrails is the favorite word now around u.s.-china relations, my sense is that biden would not have done that diplomatic although he'd like to see -- have people see him as considering it. but this incident unless it's cleared up pretty quickly is going to increase the pressure on biden and others to do a diplomatic boycott. >> yeah. it certainly is at the end of the day most people are saying now what's important is peng's well-being. so we'll try and get through that and see where the rest of the issues take us. good to see you. appreciate it. >> all the best. so like so many of us the austrian people have been through lockdowns before. many of them are now furious they will have to stay home again and get vaccinated whether they like it or not. plus election day in chile. why the two leading candidates show how deeply twidivided the country is. re-entering data that employees could enter themselves? that's why i get up in the morning! i have a secret method for remembering all my hr passwords. my boss doesn't remember approving my time off. let's just... find that email. the old way of doing business slows everyone down. with paycom, employees enter and manage their own hr data in one easy-to-use software. visit paycom.com for a free demo. with directv stream, i can get live tv and on demand... together. watch: serena williams... wonder woman. serena... wonder woman... serena... wonder woman... ♪ ♪ ace. advantage! you cannot be serious! ♪ ♪ get your tv together with the best of live and on demand. introducing directv stream. welcome back to our viewers here in the united states and all around the world. i'm paula newton, and you are watching "cnn newsroom." riot police in the netherlands face another night of unrest as protests erupted over new coronavirus restrictions. this time protesters setoff fireworks and built bonfires. the night before a similar protest turned violent in a port city. european officials say stricter measures are now needed as new cases surge among the unvaccinated. in the french territory of guadeloupe health restrictions led to another night of arson and looting. france reportedly is sending about 50 special forces to help restore order. now, the strictest measures in europe right now are in australia where a nationwide lock down begins monday. tens of thousands of protesters filled central vienna on saturday. many are upset by the government's new vaccine mandate, the first of its kind in western europe. now, compounding the surge is the declining effectiveness of vaccines after several months, something many of us are worried about. even in a country like portugal which has one of the highest vaccination rates in europe, you can see it there, there are troubling upticks in new cases. cases have been going up, of course, in the united states as well. and with the northern hemisphere heading into winter and people gathering indoors for the holidays, booster shots are becoming ever more important. no one in europe is deluding themselves they're going to be able to have boosters get them out of this situation. i think it's the rage that's being expressed on the streets now with some of these restrictions about whether or not they will even work in terms of getting people to actually adhere to those strict locktop downs. >> that's absolutely right. when you look at australia, you've bought a two fold problem there, because the people who don't want to get vaccinated on february 1st they'll have to by law. and the people who are vaccinated just want their boosters and get on with their lives. you've seen incredible violence on the streets there. let's watch. it's the last weekend before a nationwide lock down in australia. tens of thousands of people in vi vienna protested new covid-19 restrictions. one protester says, i want my freedom back. one would think we live in a democracy but now this is a coronavirus dictatorship. australia is introducing some of the strictest measures in region to try to contain the virus. as of monday all residents whether they're vaccinated or not are back under a state at home order. no one is allowed to leave home except to work, shop for esedges or exercise. in february covid-19 vaccinations will be mandatory. the decisions have infuriated some in the country even though australia like many countries in europe is experiencing staggering now numbers of infections. the demonstrations in vienna by the country's far right freedom party which says it will combat the new measures, though the party head couldn't attend after testing positive for covid-19. in the netherlands city workers in rotterdom are cleaning up after a night of violent protests which would limit indoor access to public venues to people. some residents say they're appalled by how out of control the rally became. one man says, "i'm very angry about it. they renovated the center of the town and a bunch of idiots destroyed it." crowds are also filling the streets of the capital of croatia to oppose a covid past passport. as governments increasingly lose patience with vaccine resistance and take more drastic measures to try to stop the spread of the virus as people gather indoors because of colder weather. the world health organization has said another 500,000 people in europe can die by march unless urgent action is taken. the rallies for personal freedom and against the restrictions taking place in cities across europe as strained icus across the region struggle to keep up with a number of covid-19 patients, some of them just fighting to stay alive. you see it's a difficult situation and especially in australia right now. and starting opmaentd we're going to have to see what happens, how many people adhere to this or not, paula. >> and we'd be wise to keep on what's going on in europe and so have european officials. the economy is really fragile. it just started to recover. >> that's right. no one wants to go into the sort of lock down we had last year over the holiday season. they need this holiday seasonch they need people to go out and buy gifts and celebrate and go to restaurants. another winter like last winter is going to be devastating if they have to lock down more countries. >> i'm glad you pointed out it wasn't just in australia the unvaccinated were angry. the vaccinated are like, look, we did our parts why do we have to stay in our homes? i appreciate the update. chile has also seen street protests, but they're focused on economic issues. after more than two years of unrest chileans head to the polls to choose a new president. raphael romo looks at the front runners and whether they can unite a divided country. >> reporter: october 2019, santiago, chile. a democratic country long known as one of the most stable democracies in latin america erupts into chaos. the government of the president declares a state of emergency in a desperate attempt to contain violent clashes between security forces and protesters as well as widespread acts of vandalism. it was not until the president asked for forgiveness for his country's inequality and promised to hold a convention to write a new constitution that protests calmed down, but by then there had been tens of deaths. am by-product of these protests was a profound polarization and a sense of turmoil that set the current stage as chileans go to the polls sunday. >> what's at stake is how these things will sort themselves in the context of a new government, new president. and of course the main candidates tend to be people who really are really quite different from what we've been used to in chilean politics up to now. >> reporter: two polar opposites stand out unless one wins more than 50% of the vote on sunday, the two will advance to the second round to be held on december 19. a candidate of the hard left describes himself as a democrat. he supports abortions rights, champions a welfare state model and leads a coalition that includes chileans communist party. >> it was a coalition party between 2014 and 2018, and it was much more of a junior partner. and in this coalition it plays a much more important role. >> reporter: in a campaign video he says his platform is based on issues like decentralization, feminism, the climate crisis and dignified jobs for everyone. cast as a candidate of the hard right who has proposed to build a ditch or moat on chile's border to stop the flow of migrants from other countries. he promises to be tough on immigration. those who are in the country illegally, he says, will be invited to return to where they came from or we will provide transportation to do so. >> he comes from the ruling party, which is the party basically intellectual and political heirs of the dictatorship, and he left that party several years ago, about three or four years ago he left that party and founded his own party, the republican party. >> reporter: and even though there may be a surprise funk says out of those two extremes voters are trying to find an answer to the original demands of the 2019 protests. they're seeking political change, better social services, a stronger fwuchlt that will deliver better pensions, education and health care in addition to a throw the bumps out attitude, a desire to get rid of the traditional parties the same way it's happened in other countries in recent years. raphael romo, cnn, atlanta. we are following breaking news out of jerusalem, where a shooting attack in the old city has left a 35-year-old man dead and four other people injured. one victim, a man in his 30s, is said to be in serious condition. three others were said to have moderate to light injuries. now, authorities, say the alleged assailant was killed. they say the shooter used an improvised automatic weapon commonly known as a carlo. it comes just days after a palestinian teenager was killed in a stabbing attack against israeli police in the old city. now, the future is uncertain to say the least for thousands of migrants stranded near the polish' belarus border. next we'll speak to an official from the international rescue committee working on aid programs for them. >> plus a new list is outranking the world's most polluted cities. when we come back who tops the list and how the government plans to fix it. one role of a lifetime...one sore throat. but she had enough. she took new mucinex instasoothe sore throat lozenges. show your sore throat who's boss. new mucinex instasoothe. works in seconds, lasts for hours. when a truck hit my car, the insurance company wasn't fair. i didn't know what my case was worth. so i called the barnes firm. i was hit by a car and needed help. i called the barnes firm, that was the best call i could've made. i'm rich barnes. it's hard for people to know how much their accident case is worth. let our injury attorneys help you get the best result possible. ♪ the barnes firm injury attorneys ♪ ♪ call one eight hundred, eight million ♪ mifwrngrants are making it clear, right, they know where they want to go from belarus. some 7,000 people are still stuck in limbo near the polish border. last week polish police used water canons to stop a flood of migrants from crossing. since then belarus has cleared makeshift camps on the border and moved migrants into a nearby warehouse. but it's still an open question where they will go next. now for more on this we are joined by stefan, a deputy regional director at the international rescue committee, the irc. and he is near the border between poland and belarus. i hope you can hear me, and i'm glad to have you here on what has been an important story. at this point in time given what you know on the ground, what you've been able to see -- and i appreciate you haven't been on the ground a long time -- how is everyone doing? are their needs being met, their immediate needs? >> this is probably our biggest pro problem. on the polish side the immediate needs of people are not being met, at least not adequately. there's an exclusion zone about 3 to 5 kilometers wide all along the border with belarus. and aide workers and journalists cannot go in there. we know there's people in there able to cross the border maybe a week or two ago, maybe longer. there's also people able to cross at this time. and when they're in this exclusion zone they have to hide because they know they'll be pushed back into belarus where they'll be at risk of violence as well. they're not able to access supplies and service and food and that's puts them at risk where and there's people dying as you know. >> can you clarify for us who's holding up the access at this point? >> right now in this exclusion zone we have polish border guards, military and police operating in that area and beyond. but any assist sns that asylum seekers would be able to access in this zone and exiting it would only come from local residents, the only people allowed to enter the zone who just out of their good hearts will try to save lives. and then at the perimeter of the exclusion zone our partners are present waiting for emergency calls that asylum seekers would place, and then they'd rush and try to find, geolocate those asylum seekers and provide them assistance. sometimes we come too late. >> it is an incredibly difficult situation especially as we can see in some of the video there, there are families and young children. what do you want europe and belarus to do? as you know they've been unable, really, to can come to any kind of solution on this. what do you think they need to do in the coming days? >> the most immediate thing that needs to change right now is that aide workers need to get access to this exclusion zone. we need to be able to reach asylum seekers whose lives are at risk. if we got access and nothing else would change, it would be very hard to provide this assistance because people are in hiding. we would need to be able to save people and not be tracked and followed by border guards who had then immediately detain these asylum seekers and push them back. if that is the case and some organizations have been collaborating with border guards, then people will not even place their emergency calls. so there's this combination of access and peoples individual right to asylum, which is an international right that every human being has. it doesn't mean every person is entitled to asylum, but it means every person's case needs to be heard in a fair procedure. and these are things that are not happening consistently right now. >> yeah, and i have to say the cat and mouse game you're describing there is incredibly disturbing. these are families, people, and people who want a better future, which they all have a right to have. i have to ask you the irc has been quite active ipsaying, look, these policies have to change in general, writ large, with europe. and it seems to stem what you had said due process -- for all these people to actually get due process even if that happens quickly, do you think anything like that could be put in place right now if both sides -- i'll say both the eu and belarus -- could cooperate on getting these people processed? >> absolutely. i have no doubt this is possible. if you look at the numbers we do not know exactly how many asylum seekers are in belarus now. we do not even know how many are in different parts of poland. but let us assume we're looking at anywhere between 10 and 20,000 people in this area who are interested in claiming asylum. this is a number that can be handled easily, especially if you look at the european union as a whole. the european union has been struggling for years and years now to come to an agreement on how to collaborate and provide asylum to people who need it and have not have come very far. the one thing that seems to be working with the european union in terms of agreement is sealing the border and pushing people back. this is happening all along the eu's external border. but solidarity and collaboration when it comes to providing asylum, providing protection, that's the part that isn't working at all. particularly here with the numbers you're seeing, this is feasible. no doubt. >> and that is a very good point in relation to everything going on. the few thousand that are there who are in desperate need right now at this hour as the temperatures get colder and their plight more desperate. they could process those people. thanks so much for your insights especially now you're on the ground. we'll continue to follow it. >> thank you. now, another desperation for migrants going through mexico. authorities there report finding 600 migrants hidden in two trailer trucks on friday. among those crammed inside were pregnant women and children. authorities say they located the trucks traveling through the southern state of vera cruz headed north toward the u.s. border. the migrants come from a dozen countries mainly from central and south america. and more than 75 migrants have drowned trying to reach europe from libya. and that's according to this tweet from the u.n. migration agency, which attributed the information to survivors. the tragedy happened after they departed from libya wednesday. this is so tragic, though. the migration agency says more than 1,300 people have died in a similar situation this year alone. now, more than 20 people are dead as heavy rains wreak havoc in south eastern india. the air force conducted this dramatic rescue lifting people stranded in a swollen river after a flash flood. heavy rains have swamped the state since thursday. and new delhi is still dealing with air pollution that's been so bad officials are considering restricting the use of private vehicles on alternate days. schools in the indian capital have been closed this week, and just over the border in pakistan that just topped the list of the most polluted city in the world. thick, acrid air is taking a toll on living conditions. >> reporter: smog so dense you can only see a silhouette of this building that's just a few yards away. on the streets people are wading through the thick smog. one resident says it's so bad people are covering their eyes and walking right into traffic. this is lahore, pakistan, which regularly ranks among the most polluted cities in the world. >> translator: now this city which we call the city of flowers, the city of gardens is gripped by smog. it is engulfed in smog. >> reporter: on saturday it topped the daily ranking of the world's most polluted cities again, a rank often challenged by new delhi. residents cough, everything smells of smoke. according to a paramedic at a local hospital patients are coming in with sore throats because of the smog not covid. as the haze grips the city in a choke hold, residents are getting desperate. >> translator: when we will leave the house in the morning the pollution causes irritation to the eyes. it is hard to breathe. the government should find a solution for this smog. >> reporter: a local report says anti-smog squads have been deployed across lahore. they're identifying and sealing factories aren't meeting city standards. smog towers are sucking pollutants from the air in new delhi. residents are asking the government to install more as the smog is affecting people and livelihoods. >> translator: there's passengers that prefer cab. i ask them where are you going? they say no, there's too much pollution. we'll take a cab. >> reporter: despite some measures to fight smog, the increasing pollution makes the sight of a clear sky still a distant dream. okay, still to come here for us, saving the earth from armageddon. i'm not kidding. nasa is trying out some new technology to try and protect the earth from potentially devastating asteroid impacts. you'll want to see this. are you a christian author with a book that you're ready to share with the world? get published now, call for your free publisher kit today! so nasa plans to launch a spacecraft this week with an unusual goal, crashing it directly into a near earth asteroid. michael holmes explains. >> reporter: it's a space story seen several times in the movies like in the 1998 sci-fi film "armageddon." >> the united states government just asked us foosato save the . anybody want to say no? >> reporter: the military, astronauts and even oil rig drillers try to save man kind. some cities don't make it, but in the end the planet survives. a hollywood ending which nasa is hoping to make a reality with its first planetary defense test mission. scientists say they have identified the kilometer wide asteroids like those shown in the block busters, and there are no darngers of them hitting earh in the coming centuries. but nasa says it wants to study what could be done if an earth threatening asteroid is discovered. on wednesday it will launch a mission called dart, the double asteroid redirection test, that will send an unmanned spacecraft into space, and if successful, it won't be returning home. dart is set to launch aboard a spacex falcon 9 rocket and will travel through space for the next nine months. its destination a near earth asteroid named dinemus and its moon. >> they are not on a danger to the earth and not set to hit the earth in the near future. that makes them an appropriate target. >> reporter: dart will then deliberately crash into the moonlet to try to jolt if from its regular orbit. scientists will use satellite imagery and ground based telescopes to see how much the moonlet changes coarse. >> if one day an asteroid is discovered an a collision course with ether we'll have an idea how fast it's coming and when it will hit, that kind of information we'll have an idea how much momentum we'll need to make that asteroid miss the earth. >> reporter: the targeted moonlet is a little larger than one of the peer meads in egypt. nasa says there are 10 nun known asteroids gnat are just as big or bigger that could potentially cause major regional damage if they ever hit the earth, although none of them are tracking this way. dart's kamikaze mission could provide lifesaving data if anything ever does get too close. michael holmes, cnn. >> and that does it for me. i'm paula newton. i want to thank you for your company. every day in business brings something new. so get the flexibility of the new mobile service designed for your small business. introducing comcast business mobile. you get the most reliable network with nationwide 5g included. and you can get unlimited data for just $30 per line per month when you get four lines or mix and match data options. available now for comcast business internet customers with no line-activation fees or term contract required. see if you can save by switching today. comcast business. powering possibilities. live from cnn world headquarters in atlanta, welcome to all of you watching us here in the united states, canada, and around the world. i'm kim brunhuber. this is "cnn newsroom." a gunshot inside america's busiest airport triggers chaos. now atlanta police are looking for the man who fired the weapon that went off at a

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