Sounds, support isis, or at least they think rule by isis is preferable to having their city taken by a shiite army backed by a corrupt government in baghdad. Bottom line, this is not going to happen anytime soon. The two major factions of islam opposed to each other there around mosul. Liz palmer, thank you very much. Every day three children are killed and 470 injured in car crashes, and its often because they were hit by the front seat. Kris van cleave has our investigation. Reporter 16monthold Taylor Warner was riding in the back seat of her familys minivan five years ago when it was rearended at 55 miles an hour. I looked and i realized that there was blood coming out of her face. I knew that Something Else was wrong. Reporter taylor was in her car seat behind her father. His seat broke and struck taylor in the face, killing her. And it was all because of some stupid car that we thought was the safest thing we could, you know, get for our family to protect them. Reporter crash tests show what can happen when a seat collapses. The driver is launched backwards and slams into the childs face. Drivers can also be injured or killed. How often does this happen . Every day. Reporter alan cantor has led an independent Crash Test Lab for nearly 30 years. We hired his lab to test seat strength using the current federal standard. Why are we looking at a banquet chair . What were trying to do is show how absolutely ridiculous the federal standard is. 50 reporter this is the only test required to pass the federal standard. A standard so weak that even a banquet chair passes. This is strong enough. According to the government, this is strong enough. Reporter all the seats we tested met or exceeded the federal requirements. But in some failures like this can still happen. Do car makers know this is an issue . Yes. Some of them have made their seats stronger. Reporter how do i as a consumer know if ive got a strong seat or a weak seat . Theres no a of knowing as a consumer. Reporter thats because seat testing is not included in current star safety ratings. Vehicles can have five stars and still have weak seats. This is a beltintegrated seat. Reporter longtime accident investigator Ken Saczalski has been trying to get the national highway Traffic Safety administration, or nhtsa, to require stronger seats since 1992, when he spoke to ed bradley on 60 minutes. Its an inadequate standard. Its flawed as far as im concerned. Has that changed . No, it hasnt. Its basically the same today as it was then. Its a worthless standard. Reporter nhtsas own researchers also warn of the issue in 1992 citing examples of major or fatal injuries when seat backs collapse. Nhtsa declined to speak to 60 minutes back then saying only the agency was investigating ways to strengthen the standard. Kris van cleave from cbs news. Reporter current nhtsa administrator Mark Rosekind turned down our interview request and had nothing to say when we caught up with him. Happy birthday to you if they had changed the government Safety Standards to where you know, the seat back wouldnt fail, then we would still have a 6yearold running around. Reporter nhtsa sent a statement saying in 2004 the agency decided to stop looking into seat back strength. Scott, they said the decision rested on the difficulty of providing data as opposed to anecdotal evidence for safety benefits of a change. Kris van cleave with the important investigation tonight. Kris, thank you. Problems are piling up at a landfill that neighbors say is on the brink of a nuclear emergency. And a royal visit for and a royal visit for americas woun enough pressure in here for ya . Ugh. My sinuses are killing me. Yeah. Just wait til we hit ten thousand feet. Im gonna take Mucinex Sinusmax. Too late, were about to take off. These dissolve fast. Theyre new liquid gels. And youre coming with me. Wait, what . you realize i have gold status . Do i still get the miles . New Mucinex Sinusmax liquid gels. Dissolves fast to unleash max strength medicine. Start the relief. Ditch the misery. Lets end this. Weraxe daily fragrances. His, but what you wouldnt have seen is this, axe dry spray antiperspirant. Why are you touching your armpit . I was just checking to see if its dry. Dont, thats weird. The first ever dry spray antiperspirant from axe. Thousands of gallons of tainted water spilled last night at the Bridgeton Landfill near st. Louis. This is the same landfill weve been telling you about where an underground fire is burning next to an old Nuclear Waste dump. Vinita nair is following this. Reporter they carried their petitions in a childs casket, demanding the governor declare a state of emergency. Make the fire go away reporter these mothers from north st. Louis county are convinced their local landfill is on the brink of a nuclear emergency, putting their families at risk. Someone needs to stop this. Reporter Karen Nickell organized the group. It breaks my heart to know that it takes moms of a community to devote almost 24 hours a day to do what agencies and elected officials should have been doing all along. We are sick. Our kids are sick. And were dying. Reporter these mothers were among hundreds of residents at a raucous meeting this week, demanding answers from environmental officials. You did not bring accountability here. Reporter their primary concern stems from these areas. These sites are where waste from Americas NuclearWeapons Program is buried in a landfill. The other landfill has an underground fire thats been smoldering for five years. They are now thought to be about 1,000 feet apart. Ed smith is an environmentalist whos been studying the site. And the folks around the st. Louis metro area need to be paying attention. Were talking about the possibility, if theres a surface fire, for radioactivity leaving the site. Reporter Republic Services purchased the landfill in 2008. Russ knocke is the companys spokesman and says theyve spent 150 million to control and monitor the fire and dont think disaster is possible. All of those investments is part of the commitment that we have to do the right thing and to do the responsible thing and ensure that the site is safe and remains in a managed state. Reporter many residents have asked the landfill owners and state officials to buy back their houses so they can move. Scott, they say they dont want future generations to be in the same fight. Vinita, thank you very much. For baseball fans it was a game for the ages that lasted for ages. Thats just ahead. Some of americas Wounded Warriors got a visit today from a veteran of the war in afghanistan britains prince harry. He was joined by Michelle Obama and jill biden at ft. Belvoir in virginia. The prince listened to music and shook hands with wheelchair athletes. Hes here to promote the Invictus Games for wounded vets to be held in orlando in may. It was a royal finish early today to game 1 of the world started with a rare inside the park home run. The tv signal disappeared twice when generators failed. The father of royals starting pitcher Edinson Volquez died before the game, and volquez wasnt told until he left after six innings. A sacrifice fly finally ended it in the 14th. ,,,,,,, in a major discovery, a Team Including the smithsonian has recovered the first artifacts from a slave ship. The treasure is destined for the National Museum of africanamerican history and culture, under construction in washington. For sundays 60 minutes we followed Museum Director lonnie bunch to africa on his adventure to make history. Mozambique island in east africa was a headquarters for the slave trade for 400 years. Museum director lonnie bunch showed us where africans were auctioned and marched to the sea. They were running so many people through here they needed a ramp this big. Yes. What you probably had was almost an assembly line. Youd bring people, youd sell people, then you would move them onto the boats and off to the new world. What does a black man see that i cant see . He sees a combination of unbelievable pain, a sense of anger, a sense of loss, but also an amazing sense of optimism that the people who shuffled down this ramp, those that were able to survive, built the americas. Reporter the ship bunch was looking for was discovered in the archives of cape town, south africa. Anthropologist steve lubekeman found an old investigation into a portuguese ship that hit bad luck at the cape of good hope. 200 slaves drowned in the wreck. We have the captains account, and he signed his name here 220 years ago. Incredible. He said he decided to save the slaves and the people. The people are the crew. The slaves are just cargo. Reporter in 2010 the wreck was discovered. One of the divers is jac jaco boshoff. So you actually were excavating the sand . Thats correct. On the sea bottom. Thats correct. This stuff was under the sand. Under the sand. Reporter after 300 dives they found dozens of artifacts, but this may be the most revealing. Covered in marine growth, xrays show its a shackle, similar to this, used to bind slaves. So theres a long bar running through here. And the shackles often were on a long bar, the leg shackles especially. So a long iron bar with a round metal ring. Yeah. That sort of thing, yes. And in this particular case leg shackles. The shackles and other artifacts will anchor the slavery exhibit when the smithsonian opens its museum next fall. You can see more of this fascinating discovery this sunday on 60 minutes. And thats the overnight news for this thursday. For some of you the news continues. For others check back with us a little bit later for the morning news and of course cbs this morning. From the Broadcast Center in new york city, im scott pelley. Announcer this is the cbs overnight news. Welcome to the overnight news. Im michelle miller. Republican president ial hopefuls gathered last night in boulder, colorado for their third debate of the campaign season. Colorado is a purple state, just about equally divided among republicans and democrats and also unaffiliated voters. The ten top candidates were on stage and for the First Time Since entering the race donald trump was not the frontrunner. He now trails dr. Ben carson in our cbs News New York times poll. 26 to 22 . Heres some of what the candidates had to say. Lets be honest. Is this a comic book version of a president ial campaign . Its not a comic book. And its not a very nicely asked question the way you say that. Larry kudlow is an example, who i have a lot of respect for, loves my tax plan. Were reducing taxes to 15 . Were bringing corporate taxes down, bringing money back in, corporate inversions. We have 2. 5 trillion outside of the united states, which we want to bring back in. As far as the wall is concerned, were going to build a wall. Were going to create a border. Were going to let people in. But theyre going to come in legally. Theyre going to come in legally. And its something that can be done. And i get questioned about that. They built the great wall of china. Thats 13,000 miles. Here we actually need 1,000 because we have natural barri s barriers. So we need 1,000. We can do a wall. Well have a big fat beautiful door right in the middle of the wall. Well have people coming in but theyre coming in legally. And mexicos going to pay for the wall. Because mexico i love the mexican people. I respect the mexican leaders. But the leaders are much sharper, smarter, and more cunning than our leaders. And just to finish, people say oh, how are you going to get mexico to pay . A politician other than the people on this starnlgs i dont want to a politician cannot get them to pay. I can. We lose, we have a trade imbalance hold on a second, john. Of 50 billion were at the wall is peanuts by comparison. Were at 60 seconds but ive got to ask you. Youve talked about your tax plan. You say that it would not increase the deficit because youd cut taxes 10 trillion and the economy would take off like hold on. The economy would take off like a rocket ship. Right. Dynamic. I talked to economic advisers who have served president s of both parties. They said that you have as much chance of cutting taxes that much without increasing the deficit as you would of flying away from that podium by flapping your arms. Then you have to get rid of larry kudlow, who sits on your panel, whos a great guy, who came out the other day and said i love trumps tax plan. John, listen, on balance the Tax Foundation says if you look at all of our plans, and his creates, even with the dynamic effect, 8 trillion well get back to this. Just a minute. Were going to continue. Ive got to say i want to talk were coming back to you in a minute. Beckys moving on. Dr. Carson, lets talk about taxes. You have a flat tax plan of 10 flat taxes and ive looked at it, and this is something that is very appealing to a lot of voters but ive had a really tough time trying to make the math work on this. If you were to take a 10 tax with the numbers right now on total personal income youre going to come in with bringing in 1. 5 trillion. That is less than half of what we bring in right now. And by the way, its going to leave us in a 2 trillion hole. So what analysis got you to the point where you think this will work . Well, first of all, i didnt say that the rate would be 10 . I used the tithing analogy. I understand that. But if you look at the numbers you probably have to get to 28 the rate is going to be much closer to 15 . 15 still leaves you with a 1. 5 trillion hole. You also have to get rid of all the deductions and all the loopholes. You also have to do some strategic cutting in several places. Remember, we have 645 federal agencies and subagencies. Anybody who tells me that we need every penny in every one of those is in a fantasy world. So also, we can stimulate the economy. Thats going to be the real growth engine. Stimulating the economy. Because its tethered down you have to by so many regulations youd have to cut government by about 40 to make it work with a 1 trillion hole. Its not true. It is true. I looked at the numbers. When we put all the facts down youll be able to see its not true, it works out very well. Dr. Carson, thank you. I want to hold it. Im coming to you right now. I want to comment on this. Im asking you this is the fantasy i talked about in the beginning. Im about to ask you about this. That is, you had some very strong words to say yesterday about whats happening in your party and what youre hearing from the two gentlemen weve just heard from. Would you repeat it . Im the only person on this stage that actually was involved in the chief architect of balancing the federal budget. You cant do it with empty promises. You know, these plans would put us trillions and trillions of dollars in debt. I actually have a plan. Im the only one on this stage that has a plan that would create jobs, cut taxes, balance the budget, and can get it done because im realistic. You just dont make promises like this. Why dont we just give a chick nen every pot while were coming up with these fantasy tax schemes . Were just cleaning up. Where are you going to clean up . You have to deal with entitlements. You have to be in a position to control discretionary spending. Youve got to be creative and imaginative. Now, let me just be clear, john. I went into ohio where we had an 8 billion hole and now we have a 2 billion surplus. Were up 347,000 jobs. When i was in washington i fought to get the budget balanced. I was the architect. It was the first time we did it since man walked on the moon. We cut taxes, and we had a 5 trillion projected surplus when i left. Thats hard work. Governor. Fiscal discipline. Know what youre doing. Creativity. This stuff is fantasy. Just like getting rid of medicare and medicaid. You said yesterday come on. Thats just not you dont scare Senior Citizens with that. Its not responsible. Lets just get more pointed about it. You said yesterday that you were hearing proposals that were just crazy from your colleagues. Who were you talking about . Well, right here to talk about were just going to have a 10 tithe and thats how were going to fund the government. And were going to just fix everything with waste fraud and abuse or that were just going to be great or were going to shift 10 million americans or 10 Million People out of this country, leaving their children here in this country and dividing families . Folks, weve got to wake up. We cannot elect somebody that doesnt know how to do the job. Youve got to pick somebody who has experience, somebody that has the knowhow, the discipline. And i spent my entire lifetime balancing federal budgets, growing jobs. The same in ohio. And i will go back to washington with my plan and i will thank you, governor. Pen it within 100 days and it will pass and we will be strong again. 30 seconds. First of all, john got lucky with a thing called fracking. He hit oil. He got lucky with fracking. Believe me. Thats why ohio is doing well. And thats important for you to know. Number two, this is the man that was a managing general partner at Lehman Brothers when it went down the tubes and almost took every one of us with us including ben and myself. Because i was there and i watched what happened. And Lehman Brothers started it all. He was on the board, and he was a managing general partner. And just thirdly, he was so nice. He was such a nice guy. And he said oh, im never going to attack. But then his poll numbers tanked. Thats why hes on the end. And he got nasty. And he got nasty. So you know what . You can have lets get these dayquil liquid gels and go. But these liquid gels are new. Mucinex fast max. Its the same difference. This one is max strength and fights mucus. Mucinex fast max. The only cold and flu liquid gel thats maxstrength and fights mucus. Lets end this. Oh no. under his breath hey man hey peter. unenthusiastic oh. Ha ha ha joanne . Is that you . Its me. You dont look a day over 70. Am i right . Jingle jingle. If youre peter pan, you stay young forever. Its what you do. If you want to save fifteen percent or more on car insurance, you switch to geico. You make me feel so young. I