. >> cnn's jason carol reporting thchlt i want to bring in cnn's samuel burke, live at the crash site and has the very latest for us. samuel, it is just after 2:00 in the morning there in philadelphia. talk to us about what its happening at the crash site at this early hour. tell us also, about the removal of these cars, most of the train cars have been removed from the crash site haven't they? what do investigators hope to learn from combing through the wreckage? >> rosemary, the investigation is going on late into the night. you can see from the lights behind me. they're combing through the crash site. we see from aerial photos they have just a couple of train cars left. two of the seven, it looks like. and ntsb officials, national transportation safety board tells us that they're removing the train cars and taking them to a secure location where they can review them. but it is interesting to see what type of information they have already gleaned from them. we actually know the train was going 106 miles an hour. not from the data recorder, so-called black box, but actually from the

samuel burke, cnn, london. >> more than two dozen u.s. military person them are undergoing precautionary treatments after possibly being exposed to anthrax. 22 at the u.s. air base in south korea. military officials say live samples of the dangerous bacteria were inadvertently sent there and to labs in nine u.s. states. the shipments were part of a research project to develop a test for biological threats. our kathy novak just outside the air base in south korea. she joins us now on the phone. so, kathy, bring us up to date on the current condition of those military personnel affected by this. and also explain to us how a mistake of this magnitude could possibly happen. >> rosemary we are told there are no signs of possible expoe sure in the 22 people who were involved in the training here at the osan air base. now there is no threat to the public. but the 22 people were given precautionary medical measures including going through testing, being given antibiotics and some cases vaccinations. you say how this happened is the big question.

samuel burke, cnn, philadelphia. >> so the question everyone is asking here, how did this train ride that us was routine for so many people end violently. >> tom foreman looks at how the train's speed play a role in the crash. >> there is a roone investigators knew to look at excessive speed from the beginning. it started with things like this. surveillance video. if you look at the train, rushing by, up there, you know the length of the locomotive. pick a fixed point. cal cue lay the speed of the train. that told us right away it was going much faster than it should have been going 200 yard short of the crash site. so, why does that matter? in the big equation. bring in a model of the train and talk. a locomotive xiz tremly heavy. 97 metric tons. pushing up toward a quarter million pound. if it is traveling at 50 miles an hour as it should be. all of the physics here will cause some outward force towards the outside of that curve, not a tremendous amount. push it up to 100 miles an hour or more. that force becomes much greater. now, center of gravity is low enough. heavy enough up h

not bad. >> samuel burke, many thanks.ate it. >>> presidential hopeful bernie sanders slams hillary clinton and why he says her wealth is a problem. if you're taking multiple medications does your mouth often feel dry? a dry mouth can be a side effect of many medications. but it can also lead to tooth decay and bad breath. that's why there's biotene available as an oral rinse toothpaste, spray or gel. biotene can provide soothing relief and it helps keep your mouth healthy too. remember, while your medication is doing you good a dry mouth isn't biotene, for people who suffer from a dry mouth. ♪ when you set out to find new roads, you build the car of tomorrow, today. introducing the next generation chevrolet volt. ♪ can a business have a mind? a subconscious. a knack for predicting the future. reflexes faster than the speed of thought. can a business have a spirit? can a business have a soul? can a business be...alive? ♪ building aircraft, the likes of which the world has never seen. this is what we do. ♪ that's the value

samuel burke, live for us at this hour in philadelphia. thanks, sam. so the chaos began tuesday night and hour by hour we continue to learn more details about the crash. there were terrifying stories from those who were on board. >> cnn's anderson cooper takes a look at what we know starting from the very beginning. >> wait judges university before 9:30 tuesday night when the amtrak train derailed. >> the passenger train has rolled over. >> catapulting passengers and sending seven train cars and the engine off their track. >> shoved down. the entire northeast corridor. >> amtrak 188 departed philadelphia's 30th street station at about 9:10, bound for new york with 238 passengers and five crew on board. less than 15 minutes into the ride, passengers say they felt something was wrong. >> you feel this boom and you don't think that much except the train doesn't bump. and the next thing is a harder shape shake. then by the third time, you knew there was -- the train was derailing. >> the surveillance footage at 9:23 briefly captured the train passing by. m

samuel burke is here to tell us what exactly i'm talking about. >> this is about as deplorable as itn google maps what pops up is the white house. this is something that a reader flagged up to "the washington post." also if you type in the n word followed by the word king the greater d.c. area shows up on google maps. to be clear, google maps is open source much like wikipedia. anybody can go in and edit it. if you own a small business and need to update information about your business you can do it but also if you want to say something racist about the first family you can also do it. i want to read you what a google spokesperson told us a short time ago. "some inappropriate results are surfacing in google maps that should not be there. we apologize for any offense this may have caused. our teams are working to fix this issue quickly." >> should i even mention the president's twitter account? >> he just opened up his own account and he's got about a little more than 2 million followers but in that time he's received hundreds of racist and violent tweets but something pointed out som

samuel burke joins me now. >> the details of how he spent his final hours laying on a gym floor and there'smystery about what hotel this happened. bub at the end how does a seemingly elthy 47-year-old millionaire die in a treadmill accident? that's the question family and friends of david goldberg are asking today. >> we are a company that was valued at well over a billion dollars a year and a half ago. but decided not to go public. >> goldberg the ceo of surveymonkey and husband of facebook coo sheryl sandberg seen here at a tech conference last year was found on friday while his family vacationed in mexico. what happened? mexican officials say goldberg was using the treadmill when he apparently fell and hit his head. he was found later still alive and was taken to the hospital on the country's west coast where he later died. exercise related injuries are shockingly common. just search youtube for treadmill accidents. in 2014 there were more than 24,000 treadmill accidents seen in hospital emergency rooms, according to the u.s. consumer product safety commission. and there were 30 treadmil

samuel burke, cnn, new york. >>> and u.s.dent barack obama paid tribute to goldberg with a statement on the white house facebook page. he said david goldberg embodied the definition of a real leader, someone who was always looking for ways to empower others. we're heart broken by him leaving us far too soon. >>> let's head back to the u.s. race for president. much is being made by the personal lives of candidates running for the white house. who are the riches and poorest potential nominees? tom foreman takes a look. ♪ i've got bills i've got to pay ♪ ♪ so i work, work, work every day ♪ it sounded like another chorus from lunch money lewis's hit song before president bill clinton was asked if he's going to keep taking six figure checks for taking speeches and told nbz, sure. >> i've got the pay our bills. >> in the field o announced candidates, his wife, hillary, is one of the riches with a net worth of more than $15 million even as she positions hers as a campon of the working that is class. >> the deck is still stacked in f

. >> pam: cnn's samuel burke is near the scene in philadelphia tonight and joins us live with the latest. >> pam: samuel? >> reporter: breaking news here and the dow feel we have just learned new details on the final minutes of the derailment. as the track approach to the curb where it should slope down it was actually speeding up or run 70 mi. per hour then going to 90 mi. per hour finally passing 100 mi. per hour creek landing on the bricks at the last minute, but it was just too late. the 32 year old engineer the live in newark, was a book to speak with him and will schedule a conversation come tomorrow creek however his lawyer says that he does not recall anything from the crash. >> pam: have been recovered all of the victims from this accident? >> reporter: yester it pretty incredible. one family had not had any answers. still not knowing the whereabouts of the 54 year old man from maryland thrift to they brought the cadaver dop backyard to the crash site and the dog did bring them to a body. the body was removed and brought to the morgue. >> cadaver dog >> pam: there was something