roadside bomb in ghazni province, afghanistan. he was 39 years old. >> it's later that night when i had told them that i just wanted to get it through to them that daddy -- like daddy's dead. something really bad happened. and finally my oldest had said -- had looked at me and said, he said he was coming home. >> reporter: ali and her three daughters, ages 7, 4 and 1, were now a gold-star family. for military spouses and children, it is a distinction they never hope to bear. for the emonds, it is also painfully ironic. back in 2009 eric suffered a traumatic brain injury after an rpg attack in afghanistan. while he was recovering, he and others, including his friend dan

mcgoon started an organization called mass fallen heros to help gold-star families. >> it angered eric that those families were forgotten about when all the pomp and circumstances dies down and the flag is presented. families go on. then a year passes and it's on to the next story. it's on to the next issue. >> i'd like to begin by thanking each and every one of you for attending our second annual fallen heros memorial gala. >> reporter: for the next eight years, eric devoted so much of his life to his country and gold-star families. his death leaves behind a new one. >> this was their last photo when we brought him to the airport. right before we said good-bye. >> did eric ever consider that he might be in the position of the people he was trying to help? >> no, i never thought it. >> no. >> it was something that i think we took for granted. >> reporter: mass fallen heros has supported alli and the girl

every step of the way. in may, eric's name will appear on the first memorial for u.s. troops killed in iraq and afghanistan located in his home state, it's in downtown boston. eric helped build it. >> what do you want people to know about eric? >> every choice he made was for other people. it was for the betterment of others, whether it be his family or his country. i was able to meet marines that he served with and they would say to me, he made be the person i am, and all i could say back was me too. he was an incredible person. he couldn't have been a better man. and i guess i just want people to know that. >> and we want to thank ali for sharing eric's story with us. you can learn more about mass fallen heros and their work with gold-star families at cbs disaster news.com. i'll have more in my interview with ali emond on "cbs this morning."

still ahead, he turned 18 and went against his mother to get vaccinated. and later, the moment of truth in the search for a sunken u.s. aircraft carrier.

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new degree stay fresh with motionsense. degree, it won't let you down. fierce battles continue tonight as u.s.-backed forces move into the last isis stronghold in eastern syria. civilians are pouring out. charlie d'agata met some of them. >> reporter: they're the latest surge in an overwhelming flood of civilians. human shields trapped inside the last remaining isis village and the single biggest obstacle slowing down the u.s.-led offensive. 500 more today alone who say they escaped in the early hours of this morning, defying isis death threats. so isis tried to make you stay? yes, they wouldn't let us go, this woman, a mother of five told us. we had to risk our lives to get here.

every day they've been streaming out of the village. many more than troops here had anticipated. and what's striking is the number of children we're finding. children who have only ever known life under isis. but there is a positive note about the mass exodus, is that the people here now say there are very few civilians left inside, just 500 to 600 isis fighters facing inevitable defeat. for hala's whose husband has already been killed in an air strike, there is no love lost. >> what does it mean to you to see the end of isis? >> they mean nothing to me, she said. they're trash. with fewer civilians left, the u.s.-led defeat of the last isis holdouts in syria may be imminent, and each person, every child who escapes that village, is one less civilian to worry about inside it. charlie d'agata, cbs news, syria. up next here tonight, a

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across the country, and tonight dr. daren rula tells us about one ohio teenager who has defied his mother's wishes. >> i question her judgement but not her care. >> reporter: for most of his life, ethan linerger thought it wasid not to get immunized but two years ago he began to see how the posts about vaccines his own mother was sharing on social media were dangerous. >> you have something like measles that is a preventible disease. i believe is coming back because of opinions like the ones that have influenced my mom. >> reporter: in november, lindenberger asked strangers on reddit where he could go to get up to date with his shots. my parents are kind of stupid, he wrote. god knows how i'm still alive. >> i was like, what? i was just blown away. >> reporter: jill wheeler is his mother. >> there is a degree of feeling like, you know, he doesn't trust what i say as a parent.

>> the intention of that wasn't to blame my parents for anything or make them look dumb, you know, again, that came from a place of frustration and trying to deal with this issue and find common ground. >> reporter: lindenberger showed his parents scientific studies that showed that vaccines were safe and effective but his mother remained unconvinced. >> i think it was straight up fear of him getting these immunizations and having a bad reaction. i think a lot of people look at this as a straight black and white answer and i don't feel like it is. >> reporter: lindenberger is 18 and in ohio he's old enough to get shots without his parents' permission. in december he got evacuated for influenza, hepatitis and hpv. his 16-year-old brother who is also considering getting his shots will have to wait. there is no federal law mandating children be immunized. only seven states and washington, d.c. allow minors to get vaccinations without parental consent. >> i'm very proud of him for standing what he believes in,

even if it is against what i believe. he's a good boy. he's a good kid. >> ethan got some of his vaccines in december and is getting another round later this month. jeff, these anti-vaccine conspiracy theories often use pseudoscientific evidence to sound more involved. >> all right, sarah, thank you very much. up next here tonight, the final chapter of a deep sea mystery nearly eight decades old.

we end here tonight with a voyage to the bottom of the sea. mark phillips joined the crew searching for a legendary u.s. warship. >> aye yai yai yai yai. >> reporter: rob kraft, shipwreck hunter. he may have found something. >> you know, you just hate to throw it out there on the table. >> reporter: he's aboard the research vessel "petral" hundreds of miles from anything in the south pacific searching for an american war grave that had been lost for 77 years. >> hereorr: his tools, the latest technology, an underwater drone that scans the ocean floor 3 1/2 miles d plas hits on the "hornet." >> reporter: the "uss hornet" was an aircraft carrier involved

in the crucial 1942 battle for the canal. it would be her last battle. 140 of her crew were killed that day. the rest were ordered to abandon ship before she went down. but where exactly? >> this is needle in a haystack country is what you're talking about. >> yeah, absolutely. >> reporter: rob and the crew have to guess where to search using the rough positions reported by other ships at the time. >> strategiart bringing it in nd slow. >> reporter: the drone resurfaces. its hours of recorded images show mile after mile of empty seabed. until -- >> up on the top left. what does that look like? >> reporter: that looks suspiciously like a ship. to find out if it's thsh lauh a, cameras. it dives 17,000 feet down. through a dark strange world where a ghost ship emerges.

>> this is it. this is "hornet." >> this is "hornet"? >> this is "hornet." well done. >> the actual fact you can find she's ships is mind boggling to me. >> reporter: richard was an 18-year-old gunner on the "hornet" that day. he's 95 now. we set up a video link from the ship to california so he could see the "hornet" again, even the gun he was on. >> does it seem like a familiar place? >> yes, it does. i used to stand on the right side of that gun. if you go down to my locker, there's 40 bucks in it. you can have it. >> reporter: silent guns, the hangar deck, discarded clothing, a wash kit. testaments to those who had fought and died here. >> there were a lot of young guys. you realize that you can be a dead person, you know? i want to thank you for honoring me this way. >> reporter: but it is those who

found the "hornet" who are honored and a memorial, a lost grave now has a place. mark phillips, cbs news, in the south pacific. this is the "cbs overnight news." hi, everyone, and welcome to the "overnight news." i'm demarco morgan. guilty as charged. that's the verdict in the case against mexican drug kingpin joaquin "el chapo" guzman. he was convicted of running an international drug cartel that trafficked in cocaine, heroin, crystal meth and fentanyl and used payoffs and murder as the tools of his trade. el chapo faces life in prison and jericka duncan has the latest. after three months of testimony and 34 hours of jury deliberations, joaquin "el chapo" guzman showed no emotion as the verdict wasou min ago -- >> reporter: outside court u.s. attorney richard donahue claimed victory. >> this conviction is a victory

for the american people who have suffered so long and so much while guzman made billions pouring poison over our southern border. >> reporter: his nickname might be spanish for shorty, but prosecutors cast el chapo as a larger than life drug kingpin, at one time one of the world's richest men yet a cold-blooded executioner. with testimony from 56 witnesses, the government proved to the jury that drugs and weapons were el chapo's wears. el chapo's defense team called just one witness and claimed el chapo's role in the drug trade was overblown. >> we fought like hell. >> reporter: one of his attorneys jeffrey lichtman vowed to appeal. >> but the fight is not over. we'll continue to fight for joaquin guzman until our last breaths. >> reporter: but among the avalanche of evidence from the government, video shows seizures of massive shipments of narcotics, some even hidden in cans of jalapeno peppers.

this video shows him tormenting an associate tied to a tree. for years el chapo was highly elusive. he escaped from prison twice. here he slips away through a secret hatch in his cell. in 2017, he was extradited to the u.s. and has been ferried over the brooklyn bridge to federal court each week under heavy police guard. >> this conviction, we expect, will bring a sentence of life without the possibility of parole. it is a sentence from which there is no escape and no return. >> it looks like the government will not shut down on friday. congression congressional negotiators reached agreement an a deal to fund federal agencies without any money for president trump's long-promised border wall. will the president sign the final bill? that's the question. paw paula reid has the latest. >> i don't think you're going to see another shutdown. >> reporter: with another government shutdown looming on friday, president trump said he would reluctantly back the

border security deal reached last night on capitol hill. >> i'm not happy about it. it's not doing the trick. >> reporter: the deal provides $1.4 billion for 55 miles of new fencing along the border, far short of the $5.7 billion and 200 miles of wall construction the president has demanded. though democrats did drop a demand to cap detention slots for immigrants captured in the u.s. senate majority leader mitch mcconnell and other top republicans anxious to avoid another costly shutdown said they were moving forward with the plan. >> it's not everything the president hoped to get, but i think it's a good step in the right direction. >> reporter: senate democratic leader chuck schumer concurred. >> i agree with leader mcconnell. he ought to sign the bill. >> reporter: but conservative pundits who have the president's ear trashed the deal. >> any republican that supports this garbage compromise, you will have to explain -- >> reporter: today senator lindsey graham urged the president to sign it and find another way to build the wall. >> i think the president's going to go it alone on the border.

that whether it's 1.375 or whatever the number is, i don't mind him taking that as a downpayment and finding the rest through executive action. >> reporter: the president could try to free up some money for a border wall through executive action, but many republicans oppose this option, believing it would likely get tied up in the courts and they previously vilified president obama for pursuing immigration policy through executive power. it is day three of the teachers strike in denver. both sides sat down with a federal mediator yesterday but no real progress is reported. as shannon shamlyan reports, the strike is about more than pay scales. >> reporter: thousands of denver teachers made theirtate capitol. >> shut it down. >> reporter: the educators walked out of more than 160 denver schools monday, a months of negotiations. >> i have gone into massive debt just trying to pay basic bills.

>> reporter: the dispute is largely over the district's incentive-based pay system which gives yearly bonuses as high as $3,000 a year to some teachers, like those working with students from low-income families or in special education. the union wants to lower or eliminate some of those bonuses, freeing up money for overall teacher pay. >> i have a master's degree. i have 11 years of experience. i didn't expect to still be in this place in life. >> reporter: denver public schools says it's already made a substantial offer to teachers, a pay raise of almost 11%. >> the goal of negotiations is for us to get closer to the middle. we're way past the middle in terms of what we've offered at this point. >> reporter: the district is trying to keep the schools open, staffed by administrators and substitutes, at least for now. >> reporter: cameras were allowed inside one class where it appeared to be a normal day, but students posting on social media saw something very different.

th free-for-all in the hallways. outside, many students and teache parents supported the teachers and walked the picket lines with them. >> many of these teachers have second, third jobs. it's ridiculous. dangerous weather is gripping much of the nation. >> reporter: the wall of wintery mix was a wallop. highways from the midwest to the northeast were littered with cars that just couldn't hold up to the icy roads. from the great lakes to times square, the front of ice and snow made for a frozen blanket. in new york, a semi truck overturned on slippery roads. >> we're now north of albany, new york, on interstate 87, and this part has not been plowed. so traffic's moving at about 50 miles per hour. but otherwise today we've seen it all. sleet, snow and ice. >> reporter: ice covered street signs in chicago while forcing

some pedestrians to watch out for ice falling from the sky scrapers. for many people caught in it, the most basic of tasks, like walking to school, was difficult. >> it's crazier than i've ever seen. it's incredibly slippery. if you're not having proper traction on your shoes, you're definitely going to slip and fall. >> reporter: as the road conditions were tested and beaten, so was air travel. 2,400 flights were cancelled today, another ha00 were delayed. before it's all over, the storm will have dropped as much as 5 inches of snow in parts of new england, but for people who are used to it, it's nothing that weren't ready for. >> i wasn't very surprised by the storm. it seemed like we were going to get a decent amount of snow. we got a reae snows a couple of weeks ago. so i'm not really surprised. i trust the weather people. >> reporter: it is miserable in terms of how cold it is out here. you should know that major

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this is the "cbs overnight news." on monday, president trump signed the american ai initiate, ai standing for artificial intelligence. it directs agency to dedicate resources to training and advancement in a.i., which is more than just driverless cars. the people at the forefront of this machine learning are sometimes treated like rock stars. our scott pelley of "60 minutes" introduces us to one of them. >> reporter: she is in there somewhere in a selfie scrum at a beijing internet conference. his 50 million social media followers want to be seen in the

same frame because of his talent for engineering and genius for wealth. >> i wonder, do you think people around the world have any idea what's coming in artificial intelligence? >> i think most people have no idea, and many people have the wrong idea. >> but you do believe it's going to change the world? >> i believe it's going to change the world more than anything in the history of mankind, more than electricity. >> reporter: lee believes the best place to be an a.i. capitalist is communist china. his beijing venture capital firm manufactures billionaires. >> these are the entrepreneurs that we funded. >> reporter: he's funded 140 a.i. start-ups. >> we have about ten billion-dollar companies. >> ten $1 billion companies that you funded? >> yes, included a few $10 billion companies. >> reporter: in 2017, china

attracted half of all a.i. capital in the world. one of lee's investments is face plus plus, not affiliated with facebook. its visual recognition system smothered me to guess my age. it settled on 61, which was wrong. i wouldn't be 61 for days. on the street, face plus plus nailed everything that moved. it's a kind of artificial intelligence that has been made possible by three innovations. super fast computer chips, all the world's data now available online and a revolution in programming called deep learning. computers used to be given rigid instructions. now they're programmed to learn on their own. >> in early days of a.i., people tried to program the a.i. with how people think. so i would write a program to say, measure the size of the eyes and their distance. measure the size of the nose.

measure the shape of the face. then if these things match, then this is larry and that's john. but today you just take all the pictures of larry and john and you tell the system, go at it. you figure out what separates larry from john. >> but say you want the computer to be able to pick men out of a crowd and describe their clothing. well, you simply show the computer 10 million pictures of men in various kinds of dress. that's what they mean by deep learning. it's not intelligence so much, it's just the brute force of data having 10 million examples to choose from. >> reporter: so face plus plus tagged me as male, short hair, black long sleeves, black long pants. it's wrong about my gray suit, and this is exactly how it learns. when engineers discover that error, they'll show the computer

a million gray suits and it won't make that mistake again. >> over 1,000 classrooms -- >> reporter: another recognition system we saw or saw us is learning not just who you are but how you feel. >> you know, what are all the dots on the screen? the dots over our eyes and our mouths? >> sure. the computer keeps track of all the feature points on the face. >> reporter: this man developed this for tal education group which tutors 5 million chinese students. >> let's look at what we're seeing here. according to the computer, i'm confused, which is generally the case, but when i laughed, i was happy. >> exactly. >> that's amazing. >> reporter: the machine notices concentration or distraction to pick out for the teacher those students who are struggling or gifted. >> it can tell when the child is excited about math? >> yes. >> or the other child is excited about poetry? >> yes. >> could these a.i. systems pick

out geniuses from the countryside? >> that's possible in the future. it can also create a student profile and know where the student got stuck, so the teacher can personalize the areas in which the student needs help. >> if you do, raise up your found. >> reporter: we found his personal passion in this beijing studio. he's projecting top teachers into china's poorest schools. this english teacher is connected to a class 1,000 miles away in a village called dafang. many students in dafang are called left-behinds because their parents left them with family when they moved to the cities for work. most left-behinds don't get past ninth grade. >> the topic we are going to learn today -- >> reporter: lee is counting on a. ito deliver for them the same

opportunity he had when he immigrated to the u.s. from taiwan as a boy. >> when i arrived in tennessee, my principal took every lunch to teach me english, and that is the kind of attention that i've not been used to growing up in asia, and i felt that the american classrooms are smaller, encouraged individual thinking, critical thinking and i felt it was the best thing that ever happened to me. >> what about this? >> reporter: and the best thing that ever happened to most of the engineers we met at lee's firm. >> i went to cornell for master's degree in information science. >> reporter: they too are alumni of america with a dream for china. >> you have written that silicon valley's edge is not all it's cracked up to be. what do you mean by that? >> well, silicon valley has been the single epicenter of the world technology innovation when

it comes to computers, internet, mobile and a.i., but in the recent five years, we are seeing the chinese a.i. is getting to be almost as good as silicon valley a.i., and i think silicon valley is not quite aware of it yet. >> reporter: china's advantage is in the amount of data it collects. the more data, the better the a.i. just like the more you know the smarter you are. china has four times more people than the united states and they are doing nearly everything online. >> i just don't see any chinese without a phone in their hand. >> reporter: college student monica sun told us how more than 1 billion chinese are using their phones to buy everything, find anything and connect with everyone. in america when personal information leaks, we have congressional hearings. not in china. >> do you ever worry about the information that's being

collected about you, where go,ha buy, who you're with? >> i never think about it. >> do you think most chinese worry about their privacy? >> not that much. >> not that much? >> reporter: with a quiet public, the leader of the national communist party has made a national priority of achieving a.i. dominance in ten years. this is where he becomes uncharacteristically shy. heechb those he's a former apple, google and microsoft executive, he knows who is boss in china. >> president xi has called technology the sharp weapon of the modern state. what does he mean by that? >> i am not an expert in interpreting his thoughts. i don't know. >> there are those, particularly people in the west, who worry about this a.i. technology as

being something that governments will use to control their people and to crush dissent. >> as a venture capitalist we don't -- we don't invest in this area and we're not studying deeply this particular problem. >> but governments do. >> it's certainly possible for governments to use the technologies just like companies. >> and you can see scott's full report on our website, cbs news.com. here's a simple true-or-false quiz for you. if you're between age 50 and 85, it's important for you to know the truth, so please listen closely. i'm alex trebek, and all of the answers are false. so what is true? you can get coverage, regardless of your health, with the #1 most popular whole life insurance plan available

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a growing number of americans are swearing off alcohol. but that doesn't mean they won't be heading to the bar. a lot of restaurants and bars have taken to serving tasty concoctions you might call mocktails. kenneth craig has a taste. >> reporter: hours before the bar opens at this new york city craft cocktail spot, the bartenders are prepping the ingredients for some of their most elaborate drinks. in the end, the spinning, straining and stirring delivered the tomato and passion fruit base for a drink they've named serendipity. a $16 cocktail that looks like an old fashioned but doesn't have a drop of alcohol. >> if i'm paying $16 for a. >> i've never had someone who doesn't drink alcohol come in here and gripe about it. it's never happened. i mean, you know, occasionally

someone's like, i don't want to spend money. here is water. you know what i rn aon lee hae names for themselves concocting some of the most talked about high-concept drinks in the industry so when they joined forces and opened up existing conditions, they crafted a drink list appealing to drinkers and nondrinkers alike. in fact, their first three nonalcoholic drinks are the first on their website. >> i read somewhere you hate the word mocktail. >> why would i mock the guest that is coming? >> they're the most expensive things we make. they're more expensive to produce than the alcoholic cocktails on our menu. >> why is that? >> we use higher quality ingredients, rarer ingredients. we put more time and effort going from a raw ingredient to the final product. >> reporter: these 0 proof cocktails are now in restaurants and bars and cities big and small. and some of the most famous,

including three michelin star restaurant 11 madison park in new york city, and american bar, the longest surviving cocktail joint in london. kayla bryant is a senior analyst and says the rise in mocktails is partially driven by americans placing more value on health and wellness. >> the consumer gets that delicious, flavorful drink and the operator is going to make money on that higher margin beverage. >> jeannie says she often socializes with her friends at bars but doesn't want to drink. now she doesn't miss out. >> this is probably one of the most complex and interesting things i've tasted in awhile and it has no bad news in it. >> it is very easy to make juice. you just juice fruits. it's already nonalcoholic. we know how that works. it's very easy to make soda. you take sugar, you add other ingredients you carbonate it. we understand how that works. we don't want to make that as the nonalcoholic option here. we want to make something new

that doesn't exist yet, which is a cocktail or something that drinks like a cocktail that just doesn't have alcohol

scientists have sounded the alarm about a mass extinction that's under way in all parts of the world and the victims are insects. nearly half of all insect species on earth are in rapid decline and 1/3 are in danger of disappearing all together. you might think that doesn't apply to you because you don't much like mosquitos, but most of these insects are food for birds and, and animals. many of them pollinate the food we eat. mark strassmann has the story of the bumblebee. >> reporter: the only place you can now see a rusty patched bumblebee is inside this drawer. part of the park's nature collection. >> these two boxes here. >> reporter: ant moll gist nichols. >> we haven't seen them in the

park since 2001. >> not a single one? >> no. >> reporter: important pollinators for tomatoes nest underground. over the last 20 years the species has suffered a 90% decline in population and habitat. a range that once included 28 states and stretched into the upper midwest and northeast. they face many threats. >> loss of habitat, pesticides, diseases, all of these things contribute to the overall decline of pollinators. >> reporter: bumblebees, honeybees, butterflies, in all, about 40% of called invertebrate pollinator species now face extinction. about 75% of the world's food supply depends at least partly on what they to. professor sidney cameron teaches ant moll ji at the use of illinois. >> one in every third bite of food is pollinated by bees. a huge factor is the bumblebee itself. a lot of our food is dependent

upon these bees. if that's not important, i don't know what is. >> reporter: but nichols sees new hope. >> the first bumblebee to be listed on the endangered species list hopefully will be a little bit more of a wake-up call that we need to pay closer attention to what we're doing to the pollinators and what they're really doing for us. >> reporter: experts say with help these bees could reappear in parks like this where they were once so abundant. mark strassmann, cbs news, gatlinburg, tennessee. >> and that's the "overnight news" for this wednesday. for some of you, the news continues. and for , you can check back with us a little later for "the morning news" and, of course, "cbs this morning." from the broadcast center here in new york city, i'm demarco morgan.