>> this was incredibly lucrative. >> in the years before the civil war, the. a money invested in slaves was more than the amount invest in the rail roads, banks and businesses combined. this was the economic engine of europe and the united states. by the time you got here -- >> the slaves marched from the auction ramp, down >> you had almost an assembly line. you bring people, you sell people, you would move them on to the boats and off to the new world. >> what does black america need to hear in your estimation from the echoes off these steps? >> i think all americans need recognize that as tragic and horrible as slavery was, as big an economic shadow as it casts, the one thing it didn't do was

i wish that all of us were as strong as the people who walked down those steps and got on those boats. >> we're wading out into the tidal flats. >> if lonnie was to find his slave ship, he would need steve, the co-founder of the slave project. he is an an throw apologist from george washington university who believes that slavery is the greatest story in maritime archaeology. >> think about the way in which computers nowadays our lives. it is not just, it doesn't affect just the computing industry. everything is interlinked and depends on this. and the slave trade in its time was truly the equivalent. it reached into and influenced and created the modern world. >> even so, it is not likely much has survived centuries under the sea. >> we're not talking about a hull that you'll find down there

we find parts of ships. you have to go underneath the water, at some difficulty, find pieces, try to put them back together and put together story that you can. >> the story he was searching for wasn't discovered underneath the water. his ship was lost in the dry official records of cape town, south africa, which reach back to the 1600 the slave x project had been diving into these binders for months when they discovered the st. joseph known in portuguese. it arrived in mozambique island in 1794. the cargo manifest records 1,500 iron bars for ballast and more than 400 slaves bound for brazil. this is a cargo sketch from a

paul was an historian of slavery and curator of the smithsonian museum. >> bodies and souls laid side by side with no room to move no, sanitation. many people on these voyages died. >> how long was that journey? >> a journey like the one it took could take up to four or more months. >> this is slavery on a industrial scale. >> from about 1500 through the 19th century, through the late 1800s, we're talking about at least 12 million people. >> off cape town, south africa, the captain of the ship was caught between a violent storm and a nautical chart spiked with warnings. whittle rocks, bellows rock. the ship crashed. 212 slaves were killed.

there was an investigation. >> they wanted to have independent verification. >> interviews with survivors have survived. >> this is the crew's account. right here we have the captain's 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. >> the investigation pinpointeded the site. in 2010, divers responding to a metal detector discovered bars of iron. one of those divers is an archaeologist with south africa's museum, and his partner in founding the slave x project. he says these the iron bars we mentioned a moment ago on this ship's manifest.

sand on the sea bottom of this was under the sand. so you were in how much water? >> about five meters of water. >> 15 to 20 feet of water. >> that's correct. >> and these are two feet tunneled sand below that. >> yes. >> it turns out, shallow water makes it harder. surf tosses the divers and sand vacuumed away settles back within hours. but after more than 300 dives, this is what they've recovered so far. >> these are nails that pin sheets of copper over the hull for protection. what looks like a lump of concrete is marine growth on a wooden pulley block. similar to this one used to hoist sails and cargo. this x-ray shows the two white spaces where rope was threaded around the wheel. the divers discovered wood that a lab would later trace back to

masked by two centuries under the sea, x-rays show a shackle. similar to this used to bind slaves. >> you can see the full report on our website. cbs news.com. the overnight news will be right the overnight news will be right back. i absolutely love my new york apartment, but the rent is outrageous. good thing geico offers affordable renters insurance. with great coverage it protects my personal belongings should they get damaged, stolen or destroyed. [doorbell] uh, excuse me. hey. lo mein, szechwan chicken, chopsticks, soy sauce and you got some fortune cookies. have a good one. ah, these small new york apartments... protect your belongings. let geico help you

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walks between the and u.s. russia on ways to end the civil war in syria but an agreement can't come soon enough for the children of the besieged city of aleppo. >> reporter: the child's cry for her mother remains unanswered. her only hero, a brave worker. but there is no one to save the children from the day reality of the syrian government backed by russia bombing its own with near impunity. children like this whose bloodied face has become a symbol of syria's civil war. after this image was broadcast around the world. he does not scream for his mother. but sits numb with shock in an ambulance. the medic who rescued him said he has never seen a child like him. usually when a child gets out of an air strike, they're crying. this child didn't say a thing, he says.

hospitals because they are also targets. like the one shown here on the security camera video. the hospital that was struck in aleppo last month. and if children do make it to a medical facility, treatment is limited. children can't overcome these serious injuries, the doctor says, because their bodies are too weak. and they are who have only ever known war feel safe. at least the mother and father survived the air strike. and he got away with minor cuts and bruises. but his 10-year-old brother was not so lucky. he died of his injuries last night. the children of aleppo not only have to survive air strikes, no

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california's blue cut fire is now contained but not before it destroyed more than 100 homes. >> reporter: inside a laboratory tucked away in ms. oola, montana. researchers are deliberately setting a wildfire. >> this is something you've been able to observe with this type of experiment? >> exactly. >> reporter: cameras capture flames from every angle to help scientists understand better how fires spread. >> there is an expression everyone uses in the u.s. i spreads like wildfire. but we don't even know how wildfire spreads. >> reporter: researchers with the u.s. forest go service measure how fast plants and trees burn. it doesn't even require a flame to ignite.

>> reporter: and they study how kit propel itself even without wind. it forms peaks and troughs. >> so those dips are where the fire is advancing? >> that's right. and it is pushing the names down. >> reporter: but his research shows more needs to be done outside the lab to cut down on the number of large wildfires. he says the current approach of putting out every fire is not working. >> if we truly want to manage us, we need to get out there well before those fires and conditions. >> reporter: the forest service spent an unprecedented $1.7 million that burn a record 10.1 million acres last year. >> are we making it worse? >> we are. by fighting these fires, we enter what's called the fire paradox. the harder you try suppress them, the worse they get. >> reporter: under normal

out, more unburned brush is left for the next fire. he says firefighters should be intentionally setting more so-called prescribed fires to burn off excess vegetation, or simply let some natural fires burn. in a statement to cbs news, the forest service says it agrees managed and prescribed fires are important tools. but our today that a pass at this to complete this work is restricted by the budget which is allocated by congress. the agency says there are local governments, as more developers push to build homes closer to fire prone areas. >> fire is inevitable. if we could not convenience ourselves it is not, we have a repeat every year of the same situation. >> reporter: for now, scientists hope by setting these controlled fires in the lab, they'll better understand how to manage them in the forest. carter evans, missoula, montana. that's the overnight news for this wednesday.

little later for the morning news. from the broadcast center in new york city. you have to leave the country, yes or no? also tonight, florida tries to determine if there's a new zika zone outside miami number of zika infections grows. martin became the poster boy for drug price gouging. now he is defending the soaring costs of life saving epi pens. and we first met pat shortly after his amazing face transplant surgery. wait until you see him now. >> this is the cbs overnight

>> donald trump is retooling his controversial immigration policy which included a vow to deport 11 million undocumented immigrants. so what's the new plan? everyone is waiting to hear. major garrett talked yesterday with trump's running mate, governor mike pence of indiana, about that and more. >> when it comes to me donald trump's immigration policy? >> i think he's been very clear. donald trump is going to restore strong borders, enforce our laws. he will build a wall. >> we are going to build a wall? >> first. >> we're going to enforce the laws on the books today. and the mechanism for how we do that. he has been very clear that we'll do it in a humane way. to make sure people understand that we treat people, it will be tough but fair when donald trump is president of the united states.

and fair means when it comes to deportation? >> i think those are issues that will continue to be worked out in the days ahead. >> after landing in philadelphia, we asked for more detail. >> people who -- >> people who have run afoul of the law have to leave immediately. >> got to leave immediately. >> the details and how we do that. we'll work it out with the congress. >> we inquired about trump's tax returns. pence said his were coming. >> donald trump and i have both come lied about the federal brools financial disclosure. >> a different standard running for president and you know that, governor. they have released the returns for decades now. >> and i would tell you, i'll be releasing my tax returns in the days ahead. >> how soon? >> and donald trump will be releasing his tax returns once the audit is over. >> before the election? >> that i think is yet to be seen. >> we discussed his boast he

in 2020. >> i think donald trump is one of the most optimistic people i've ever met in my life. >> that would redefine republican optimism. >> i don't know. abraham lincoln was the first republican president of the united states. >> 95%? >> the truth is that the liberal policy that's hillary clinton has advanced, barack obama has advanced, the democratic party has advanced for two generations have disserved people in our major cities. one after another. >> and trump's latest appeal to minority voters. >> he said what the hell do you have to lose? does that sound like ronald reagan to you? >> no. it sounds like donald trump. that's what people love about him. >> pence also told us he expects trump to participate in all three presidential debates and waived off his ongoing negotiations with the debate commission as mere formalities. he said he expects trump to win those debates and in the process, turn this election

>> outside philadelphia tonight. and the first debate is just under five weeks away. one line of attack for trump could be the clinton foundation. today associated press reported that more than half the non-u.s. government people who met with hillary clinton while she was secretary of state gave money to the foundation. >> nobody has ever seen anything like this before. >> gop officials join trump today in calling for aci they say was a pay to play scheme in clinton's state department. >> it's criminality. everybody knows it. >> his accusation is based on e-mails, to and from top clinton aide huma abedin. they were released by judicial watch. it showed that foundation donors from the crown prince of bahrain to slim fast founder danny abraham were requested and often

donors got anything beyond that. in one, abedin said she is nervous to get involved when a donor asks for help obtaining a visa to the u.s. with a british soccer player with a criminal charge in his background. >> we have seen no evidence of any behavior, any relations with the clinton foundation that weren't completely above board. >> clinton's running mate, tim kaine argued trump is the one being thrown into foreign interests. >> before you go about attacking a charity, why don't you come clean about your own business dealings and tell the american peel who you are in debt to? >> even without any evidence of a quid pro quo, it is the number of donors that clinton met with that is causing her some heartburn tonight.

today florida reported five more zika infections spread by mosquitos, bringing the total to 42. one of the new cases is in pinellas county on the far north. so officials are trying on determine now whether there is a third zone with active local transmission. >> reporter: in miami beach, city sanitation crews spent hours looking for and vacuuming standing water. zika-carrying mosquitos. we followed code compliance inspectors their rounds, searching for standing water. they found in it an alley at a construction site. we noticed a cement truck dripping water. the officers took action. >> we're going on issue a violation for creating a health hazard nuisance which is a thousand dollar violation. quickly someone grabbed a broom and started sweeping.

out, let me show you this. we noticed an air conditioner unit where water is dripping. it is just a drip but look at the puddle at the bottom. something where mosquitos would breed. the problem they have, what do you tell people? turn off the air conditioner? it is 91 degrees on miami beach in the middle of august. he gave him a code violation and he had five days to fix leak. erica thomas is waiting for this type of violation. outside her high rise apartment is standing water in a construction site. didn't like what she was told. tweeting my situation in winwood will be handled in 24 to 72 hours. what a joke. >> do you know anything about mosquitos? that's a long time for a lot to happen. >> an official in miami-dade said they know about that. they've treated it before. and they're going to target it again this weekend. that new case in pinellas county, crews are going door to

a new cluster of cases.

today president obama saw for himself some of the flooding damage in louisiana. the floods left tens of thousands of homes damaged or destroyed. the number of people killed. at least 13. >> i'm so sorry. neighborhood in louisiana urging victims to apply for federal aid. while acknowledging a full recovery will require more. >> federal assistance alone is not going to be enough to make people's lives whole again.

back on their feet. >> reporter: the president's visit came as he face someday criticism over his own response. last friday, republican nominee donald trump toured the disaster area and blasted president obama for not cutting short his new england vacation to do the same. >> i guarantee you, nobody on this block, none of those first responders, nobody gives a hoot whether you're a democrat or republican. what they care about is making sure they're getting the drywall out and the carpet out and there's not any mold building. >> reporter: the number of registrations for emergency assistance continues to rise. including that of amy is that samuel cave in nearby denim springs. >> we have a newborn on the way. thanksgiving day. we don't know where we're going to bring him. >> reporter: volunteers helping them sort through few things

everybody come, of course, but your whole world is gone. all the baby things, everything is gone. >> reporter: nearly every single home in this subdivision the president visited has some type of flood damage. fema has already approved $127 million in immediate aid. the president said he may urge congress to pass long term this package. terrorism is being investigated as a possible motive in a weekend knife attack in virginia. federal agents want to find out whether the suspect might have been inspired by isis. >> reporter: in the shadows of the blue ridge mountains, people expected an isis inspired attack here. the fbi is now investigating a gruesome stabbing at this apartment complex. as a possible act of terror and have charge 20-year-old wasil farooqui in an attack on a man and woman this weekend. angela saw it happen. >> i looked down and saw blood all over the railing. and then at the bottom of the

a butcher knife. about eight or ten inches on the blade, covered in blood. >> reporter: the roanoke chief said farooqui jumped the couple at the base of this staircase. >> went up all three flights of stairs and into the victim's apartment. >> reporter: and voughting allahu akbar. >> however many times that happened. >> reporter: it means god is the greatest and often shouted by perpetrators during islamist inspired attac u.s. officials say wasil farooqui traveled in what may have been an attempt to cross into syria to isis. for some reason he was unsuccessful and returned to the u.s. the male stabbing victim has been released from the hospital. they hope the female will be released later this week. as for farooqui, he said he was hearing voices that ordered him

in afghanistan, a u.s. soldier was killed. another wounded by a roadside bomb in helmand province. the americans were helping afghan troops trying to retake the area from the taliban. this is the second u.s. combat death in afghanistan this year. once again the sentence in a sexual assault case is being criticized as too light. the accused, a former high school athlete in western massachusetts, will not spend any time behind bars. michelle milr case. >> reporter: according to documents in the case, 18-year-old david becker assaulted two unconscious females at a friend's house party in april. the victims said all three were drinking and fell asleep in an upstairs bedroom. later that morning, victim number one said she awoke to find her pants and underwear down to her thighs. she told police at no time did she consent to david touching her.

that becker assaulted her, too, that night. the next day, victim number one says becker texted her, just wanted you to know that i am really sorry. she applied to him, don't even worry about it. it's all good. she told authorities that she did not know what else to say. becker was charged with two counts of rape and faced the possibility of two years in prison. the judge sentenced him to two years probation. no jail time. becker's attorney defended the sentence s w mistakes when we were 17, 18, 19 years old and we shouldn't be branded for life for a felony offense and branded a sex offender. but the judge's decision has been widely criticized for being too lenient. laurie levinson is a law professor. >> i think there is a strong outcry. there's a perception among the public that we're not taking these cases seriously enough. we're not protecting the women. >> carla martin was classmates with becker.

other people, other victims of sexual assault, if they say something no, justice is going to happen. >> reporter: a spokesman for the d.a.'s office said one of the accusers said in her victim impact statement that she didn't believe jail time was necessary. court watchers say neither of the accusers were present in court may have been a factor in the judge's decision. >> michelle miller in palmer, massachusetts. coming up next, look who is defending the skyrocketing price of a life saving allergy treatment. and later, a first responder's remarkable recovery from a face

this pimple's gonna last forever. aw com'on. clearasil ultra works fast to begin visibly clearing up skin in as little as 12 hours. and acne won't last forever. just like your mom won't walk in on you... forever. let's be clear. clearasil works fast. members of congress are asking to know why the prices of epi pens are skyrocketing. as we've reported, the price has gone up by nearly 500%. >> she was going into anaphylactic shock. her lips turned blue. she was not able to breathe. >> their daughter ellie almost died from food allergies twice.

soared over seven years ago from about $100 for a two pack to over $600 today. all of it for a drug that delivers just $1 or $2 of the life saving hormone. it became a virtual monopoly after mylan took a similar product off the market. >> mylan is the good guy. they have one product where they're starting to make money and every one is going crazy over it. >> the former head is under indictment for securities fraud. he was heavily criticized for his 5,000% like of the malaria and hiv drug. today, he defended mylan. >> these are life saving drugs. people don't have a choice whether they buy them. >> it is $300. my iphone is $700. >> but you don't need an iphone

it is $300 and 90% of americans insured. >> in a statement they said they are quote, committed to working with customers and payers to find solutions to meet the needs of the patience and families they serve. today company's stock fell 5%. >> thank you. still ahead, one year after a double hand transplant. zion harvey has big plans for the future. .

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washington's governor declared an emergency in 20 counties in the eastern part of the state because of wildfires that have been burning since the weekend. many acres and homes have been destroyed near spokane. more than 30 fires are burning throughout the west. one of the most familiar faces in television died today. steven hill. for ten years he played the curmudgeonly district attorney on law and order. here's other a bit of tv trivia. he was the original leader of the mission impossible team, replaced after season one by peter graves. steven hill was 94. well, this looked like a scene out of a disaster movie.

capital, seemingly in a panic. we're told these were pokemon go players trying on catch one of the rarest characters, snore lax. and if none of this makes sense to you, we suggest contacting the nearest kid or millennial to explain it. speaking of kids, 9-year-old zion harvey showed off the progress he's made since undergoing a double hand transplant one year ago. he lost his hands and feet to infection when he was 2. zion is from baltimore. three weeks ago he threw out the ceremonial first pitch at an orioles game. what's next for him? >> convince mom to let me play football. >> not sure if mom is on board that but you wouldn't want to bet against little guy. coming up next, we'll check in on the recipient of another

,,,,

we end with a new beginning for an american hero. thanks to surgery that is nothing short of amazing. >> mississippi firefighter pat was 27 in 2001 when the roof of a burning house collapsed on him. >> there was no recognition. >> the fellow first responder

friend right after the accident. >> i have never seen anyone burned that bad that was alive. >> reporter: he battled pain, stares from strangers and a loss of hope. but one year ago, doctors at nyu medical center replaced his face with that of a 26-year-old cycling accident victim named david. >> i'm just an average guy walking down the street. they can tell something has happened but they would never think that i've had a face transplant. >> have you ever been so happy to be ignored? >> no. >> it is almost unbelievable to me that we can do this. >> the head of plastic surgery dr. rodriguez told him he had a 50/50 chance of surviving the surgery which took 26 hours. >> although we added chin bone, the cheekbones and the nasal bones, the remaining portions of his facial skeleton are what

that's why he looks so similar to his children. >> his underlying bone structure is like a scaffolding? >> correct. >> his oldest daughter allison wondered why do it at all. until she said goodbye to her dad just before the operation. >> he said, i won't have to wear a ball cap and i won't have to wear my sunglasses. i'll look normal when i get to walk you down the aisle. that right then pretty much sealed the deal for me. >> normal has become a reality. normal was something i never thought i would see again. >> and normal never felt so special. cbs news, new york. and that's the overnight news for this wednesday. for some of you the news continues. for others, check back with us a little later for the morning news and cbs this morning.

this is the cbs overnight news. welcome to the overnight news. the zika virus continues to spread through florida. governor rick scott announced five new cases of the virus have been confirmed and allav four of the new infections are in the miami neighborhood of winwood at the center of the outbreak. but one other case was 265 miles away near tampa bay. meanwhile, the governor is coming under fire from miami's mayor for the way he is handling the crisis. >> with the zika threat, you have pregnant women in florida considering relocating. going somewhere else. some have decided to do so. you have businesses like those in south beach who are worried with what the threat will do to them. this is one of the biggest

but by far the biggest headline has been the sizzling political feud between the mayor of miami beach and florida's governor. >> what the governor did, he not only blind sided me. he blind sided our administration. >> for the third day in a row, the mayor took aim at florida governor rick scott. for failing to tell city leaders about zika cases on miami beach before he notified the public. >> i think it would be more useful in the public to let the elected leaders, let the administration know what's going on so we can take necessary steps. >> governor scott fired back. >> i reached out to mayor levine and he didn't return my phone call. >> two tourist areas in miami-dade county. the wynwood neighborhood and south beach are home to at least 37 locally transmitted zika cases. katrina bernard's third child is due in december. >> this isn't a cold. it is life or death. >> although bernard lives

>> what has instilled that fear? >> seeing all these poor babies with microcephaly and seeing women have to make the choice to either not continue their pregnancy or to just be dealt a really hard hand. >> there are 69 pregnant women in the state of florida who have been infected with zika. the disease has been linked to babies born with micro cephaly and can impact the size of a children's head, causing seizures, developmental delays and adal physical problems. >> you can't keep mosquito in a box. >> she is also from the miami area. but earlier this month she relocated to chicago and she man's to stay there for the remainder of her pregnancy. >> you just inconvenience yourself so your baby is safe. >> reporter: we are reaching the peak of hurricane season. should we get a storm here, standing water after the storm

here in south beach, they will fine you for standing water. even a little bit. because mosquitos can breed in something like this, a bottle cap. more trouble on the campaign trail for hillary clinton. an investigation by the associated press shows that while clinton was secretary of state, more than half the people outside of government who met with her ended up donating money to the clinton foundation. nearly two dozen donated more than a million dollars each.ou give impression that donating to the clinton foundation was the price of admission for access to the secretary of state. meanwhile the state department has been ordered to release another 15,000 e-mails from clinton's personal server. they were turned up during an fbi investigation. clinton aides say they don't know what is in these 15,000 e-mails and documents recovered from her servers by the fbi. or how the lawyers missed them when they said they turned over all her work-related e-mail in

on late night tv, she tried to make light of what has become a serious liability. >> we've already released, i don't know, 30,000 plus. so what's a few more? >> clinton tried to use humor. >> have you considered using face time instead of e-mail? >> actually, actually, i think that's really good advice. ut trump and his supporters didn't find it that funny. >> now we learned about another 15,000 e-mails she failed to turn over and they've just been discovered. >> on jimmy kimmel live, clinton tackled a trump attack. >> take my pulse while i'm talking to you. make sure i'm alive. >> trump and his allies have repeatedly insinuated she is unwell. >> she also lacks the mental and

>> clinton's doctors say she is in excellent health. >> it is part of the wacky strategy. say all these crazy things and maybe you can get some people to believe you. >> trump used the same approach to go after clinton's charity on monday. >> the clinton foundation constitutes a clear example of racketeering, influence, corrupt organization enterprise. >> he insisted foundation owners got favors from the clinton state department and he called for a special prosecutor. >> criminality. everybody knows it. >> the state department said, it is not true. >> we have seen no evidence of any behavior, any relations with the clinton foundation that weren't completely above board. >> the former president bill clinton did announce yesterday that he will stop raising money for the foundation, and step down from the board if his wife is elected president.

resisted some calls for them to shut down all together if she wins. they say that would deprive millions of people around the world of life saving medical treatments. donald trump has canceled several campaign appearance this is week where he was expected to outline his new immigration policy. >> donald trump denies what appears to be a clear move away from mass deportations. the best clue? trump doesn't talk about it anymore and neither does anyone paid to speak on his behalf. what is unclear is what tr undocumented immigrants in the u.s. >> we're going to build a wall, folks. >> donald trump clung to that applause line like a rhetorical life raft in akron, ohio, amid muddy explanations to deport all undocumented residents. >> he now talks of deporting

and when i win, we'll get rid of all the bad ones. as far as everybody else, we'll go through the process. >> trump would not say what that process was or how would it work but no longer insists it includes raids, arrests and lengthy deportation proceedings. >> you don't have to put them in a detention center. i'm not going to do that. an advisory council informed trump of the logistics tied to mass deportations. minority voters. >> it is a disaster the way african-americans are living in many cases, and in many cases, the way hispanics are living. i say it with such a deep felt feeling. what do you have to lose? >> trump described a world of

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the smithsonian's national museum of african-american history and culture opens next month. and they were intent on finding a slave ship to put on display. the trouble is that none exists except at the bottom of the sea. erosion of time. the portuguese colonists who claimed it 500 years ago would still find the cut of the cloth that borrows the wind as familiar as the cut of the stone that framed their city. he came to this capital of the slave trade because he was determined to launch america's new national museum on the

>> i thought it wouldn't be hard. i called museums around the world and said, look, you must have some things. you must know where i can get some materials. everybody said no. almost every slave ship was at the end of its life so it is probably on the ocean floor. then i got scared. i thought i won't be able to find this. >> mozambique island rises off the ocean south of the equator. it was one of the points in what was called the triangular tr goods from europe to africa. slaves to the new world. cotton, gold and tobacco back to the old. in the 1400s, the portuguese are the first europeans to trade in slaves and they became the largest. followed by the english, french, spanish and dutch. on mozambique island, the portuguese built a fortress that

captured, chained and murdered in rome in 208. it was the only they know the portuguese trailed to grasp. >> when you look at the enormous effort that went into building this fort, they were protecting something that was hugely valuable to them. >> they recognized that the key to their future as nations was >> they oversaw the trafficking of more than 400,000 slaves. he was certain there had to be evidence of a ship and he soon discovered, he was not the only one looking. he found a group of researchers calling themselves the slave x project and they were following a lead. what do we final here?

the beginning of the story. >> this is a tunnel that was used to put slaves inside, to put them out of the island as well. >> reporter: under the old portuguese town, tunnels connected holding pins. the devout portuguese preferred to keep slaves in transit out of sight. how were these slaves captured? >> some individuals specialize in the capturing slaves. so they would raid villages far from here. and they walked them in chains from there to here and lots died on the way. >> so these were africans capturing africans. >> yes. it was not only a business for the portuguese. also for some of the local chiefs as well. >> those local chiefs came to this auction house to sell captives to european clients. >> a male in the late 18th century, early 19th century, would go anywhere from $600 to $1,500.

$9,000 to $15,000 today. >> this was incredibly lucrative. >> in the years before the civil war, the amount of money invested in slaves was more than the amount invest in the rail roads, banks and businesses combined. this was the economic engine of europe and the united states. by the time you got here -- >> the slaves marched from the auction ramp, down here and to the ship. almost an assembly line. you bring people, you sell people, you would move them on to the boats and off to the new world. >> what does black america need to hear in your estimation from the echoes off these steps? >> i think all americans need recognize that as tragic and horrible as slavery was, as big an economic shadow as it casts,

i wish that all of us were as strong as the people who walked down those steps and got on those boats. >> we're wading out into the tidal flats. >> if lonnie was to find his slave ship, he would need steve, the co-founder of the slave project. he is an an throw apologist from george washington university who believes that slavery is the greatest story in maritime archaeology. >> think about the way in which computers nowadays affect all of our lives. it is not just, it doesn't affect just the computing industry. everything is interlinked and depends on this. and the slave trade in its time was truly the equivalent. it reached into and influenced and created the modern world. >> even so, it is not likely much has survived centuries under the sea.

hull that you'll find down there and masts and all of that that you would imagine. >> we don't find intact ships. we find parts of ships. you have to go underneath the water, at some difficulty, find pieces, try to put them back together and put together story that you can. >> the story he was searching for wasn't discovered underneath the water. his ship was lost in the dry official records of cape town, south africa, which reach back to the 1600s. the slave x project had been diving into these binders for months when they discovered the st. joseph known in portuguese. it arrived in mozambique island in 1794. the cargo manifest records 1,500 iron bars for ballast and more than 400 slaves bound for

this is a cargo sketch from a different but typical ship. paul was an historian of slavery and curator of the smithsonian museum. >> bodies and souls laid side by side with no room to move, no sanitation. many people on these voyages died. >> how long was that journey? >> a journey like the one it took could take up to four or more months. >> this is slavery on a global, industrial scale. 19th century, through the late 1800s, we're talking about at least 12 million people. >> off cape town, south africa, the captain of the ship was caught between a violent storm

warnings. whittle rocks, bellows rock. the ship crashed. 212 slaves were killed. and because money had been lost, there was an investigation. >> they wanted to have independent verification. >> interviews with survivors have survived. >> this is the crew's account. right here we have the captain's 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. >> the 200-year-old investigation pinpointeded t site. in 2010, divers responding to a metal detector discovered bars of iron. one of those divers is an archaeologist with south africa's museum, and his partner in founding the slave x project. he says these the iron bars we mentioned a moment ago on this ship's manifest.

>> so you were excavating the sand on the sea bottom of this was under the sand. so you were in how much water? >> about five meters of water. >> 15 to 20 feet of water. >> that's correct. >> and these are two feet tunneled sand below that. >> yes. >> it turns out, shallow water makes it harder. surf tosses the divers and sand vacuumed away settles back within hours. but after more than 300 dives, this is what they've recovered so far. >> these are nails sheets of copper over the hull for protection. what looks like a lump of concrete is marine growth on a wooden pulley block. similar to this one used to hoist sails and cargo. this x-ray shows the two white spaces where rope was threaded

the divers discovered wood that a lab would later trace back to mozambique. and this may be the most revealing artifact of all. masked by two centuries under the sea, x-rays show a shackle. similar to this used to bind slaves. >> you can see the full report on our website. cbs news.com. the overnight news will be right back.

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russia on ways to end the civil war in syria but an agreement can't come soon enough for the children of the besieged city of aleppo. >> reporter: the child's cry for her mother remains unanswered. her only hero, a brave worker. but there is no one to save the children from the daily reality of the syrian government backed by russia bombing its own people with near impunity. children like this whose bloodied face has become a symbol of syria's civil war. after this image was broadcast around the world. he does not scream for his mother. but sits numb with shock in an ambulance. the medic who rescued him said he has never seen a child like him. usually when a child gets out of an air strike, they're crying.

these children cannot go to school. often they can't even to go hospitals because they are also targets. like the one shown here on the security camera video. the hospital that was struck in aleppo last month. and if children do make it to a medical facility, treatment is children can't overcome these serious injuries, the doctor says, because their bodies are too weak. and parents are faced with the impossible task of making children who have only ever known war, feel safe. at least the mother and father survived the air strike. and he got away with minor cuts and bruises. but his 10-year-old brother was not so lucky. he died of his injuries last night. the children of aleppo not only have to survive air strikes, no food access and no access to running water for nearly a month now.

negotiate a 48-hour truce so ,,

california's blue cut fire is now contained but not before it destroyed more than 100 homes. a new technique to battle the flames. >> reporter: inside a laboratory tucked away in missoula, montana, researche a deliberately setting a wildfire. >> this is something you've only been able to observe with this type of experiment? >> exactly. >> reporter: cameras capture flames from every angle to help scientists understand better how fires spread. >> there is an expression everyone uses in the u.s. it spreads like wildfire. but we don't even know how wildfire spreads. >> reporter: researchers with the u.s. forest service measure how fast plants and trees burn. it doesn't even require a flame to ignite. no. just hot air.

wind. show motion video shows how it forms peaks and troughs. >> so those dips are where the fire is advancing? >> that's right. and it is pushing the names down. >> reporter: but his research shows more needs to be done outside the lab to cut down on the number of large wildfires. he says the current approach of putting out every fire is not working. >> if we truly want to manage fire, rather than have it ge us, we need to get out there well before those fires and conditions. >> reporter: the forest service spent an unprecedented $1.7 billion that burn a record 10.1 million acres last year. >> are we making it worse? >> we are. by fighting these fires, we enter what's called the fire paradox. the harder you try to suppress them, the worse they get. >> reporter: under normal conditions, fires thin out for us. but by constantly putting them

he says firefighters should be intentionally setting more so-called prescribed fires to burn off excess vegetation, or simply let some natural fires burn. in a statement to cbs news, the forest service says it agrees managed and prescribed fires are important tools. but our capacity to complete this work is restricted by the budget which is allocated the agency says there are liability issues with state and local governments, as more developers push to build homes closer to fire prone areas. >> fire is inevitable. if we convince ourselves it is not, then we have a are pete every year of the same situation. >> reporter: for now, scientists hope by setting these controlled fires in the lab, they'll better understand how to manage them in the forest. carter evans, missoula, montana. that's the overnight news for this wednesday. for some of you the news continues. for others, check back with us a

from the broadcast center in new york city. captioning funded by cbs it's wednesday, august 24th, 2016. this is the "cbs morning news." breaking overnight. italy, after a massive earthquake rocked several cities in the early morning hours. to the race for the white house. a new report puts clinton foundation donors in face-to-face meetings with the former secretary of state, fueling pay for play allegations. and donald trump's claims hillary clinton is unfit to serve. and trump keeps hinting at a shift in his immigration policy, but he has not announced specifics yet, but one thing is clear.