>> she was the best kid anybody could have. she was, you know, a ball of energy, a ball of love. what a terrifying week in oklahoma. the question is what are the lessons learned going forward. today i'll be talking to a doctor whose fast thinking saved dozens of her patients from a tornado. and what to make of jodi arias.

a psychologist who has worked on more than 60 death cases and said her performance, quote-unquote was as strange as anything we've ever seen. and coca-cola say they're in the healthy lifestyle game. the chairman and ceo agreed to answer my questions. first up, oklahoma. you know the destruction i saw there was as complete as anything you might imagine. and i have seen disasters all over the world. the damage here was just so widespread. but although more than 2,000 people live in the exact path of the storm, 24 died, part of it was good warning. the alarms came in 16 minutes before the tornado hit and part of it was knowing what to do. so i want you to watch this and maybe even grab a pencil and learn how to protect yourself. >> jump in when you guys are ready. 13 minutes. that's the average lead time you'd have if a tornado was headed your way. there's obviously no completely

safe option during a tornado. your best bet is to get into the basement somewhere below ground level. but keep in mind that if you are there, you want to see what's on the floor above you as well. a refrigerator, a piece of heavy furniture could come crashing through the floor, so you want to be wary of that. and here in moore, oklahoma, not a lot of basementins. studies have shown an interior room or a closet can be the best place to be as well. the house is gone, but the closet, preserved, even the clothes inside of that. remember, just got 13 minutes. so find that safe place. maybe grab a helmet or a bike helmet. throw some mattresses or a blanket over you to try to protect the head. one place you can't hide from a tornado is in your car. tornado strength winds can pick up a one to two-ton vehicle like this one and toss it around like you or i would a basketball. you don't want to be driving toward a tornado, but it's also a bad idea to be driving away from a tornado. it's hard to gauge the distance. if you must be driving, and the

weather is clear -- try driving at right angles to the tornado, perpendicular to get out of the path of the storm. there's another misconception that you should get out of your car and run underneath an overpass. in a situation like this the wind is funneled and it's even more powerful than the storm and there's also a lot of debris. if you are stuck outside as a tornado approaches, find a ditch or any place far away from potentially dangerous objects and vehicles and stay low. something else interesting that i learned, when tornadoes hit, typically half the injuries occur after the storm has passed. you might imagine hazards range from downed and hidden power lines to unstable debris, sharp objects. and no one is immune. this week when i was talking to the fire chief in moore, oklahoma, he had just stepped on a nail that went right into his foot. moore medical center, it's right at the top of the path of the

hurricane pathway. it was also squarely in the middle of the storm. at the time of the storm, there were 30 patients who had no choice but to hunker down and hope for the best. dr. stephanie barnhart was in charge of the e.r. when this all happened. on monday afternoon, 34-year-old e.r. doctor, stephanie barnhart had been watching the weather alerts. growing up in oklahoma, she knew that tornado warnings were common for this type of year. but this one felt different. >> when did you recognize there was a problem? >> we had a very good alert system. the hospital was gig us these code black warnings. so we knew that one that there was a possibility of a tornado. then they gave us another alert that there was one. and then the final alert was, one is nearby. >> if it's not on the ground, it's very close to it. >> you could definitely see that this is a developing situation, a developing tornado. you see it? there you see it, now it's on the ground.

>> we all had to make the decision to go back into another area of the hospital, which is what we call our fast track or clinic area. and that is in the center of the hospital. we knew that the tv, there was a tv back there that we were watching and it was within a couple of miles and the power went out. and at that time we knew that it was, we were hearing it and we knew that it was coming for us. >> this is the moore medical building. if you look at that, it looks like it's just been bombed out. >> the tornado hit moore medical head-on, as it ripped through the building, barnhart's team and the hospital's 30 patients used mattresses to protect themselves from falling debris. >> did you have any idea how bad this was going to be? i mean it literally ripped a floor off of your hospital. >> even until now and when i got home, like i still didn't even have any, you know, i had no idea what it was like. not until we stepped out of the hospital, that i even saw you know, across the way was a bowling alley that was to pieces.

>> because of barnhart's quick thinking, not a single person was hurt. and seeing the extensive damage here, that's hard to believe. >> i just can't believe we walked out. >> people have written to thank barnhart. but she says she doesn't feel like she deserves the credit. >> everyone keeps asking when they look at these images, how is it possible that nobody got hurt in there. >> someone had to make the decision to move. and i guess that was me. but i don't want to take any credit for this by any means. i know that you know, it was god that was with us and we were protected. when i walk out of that place where we were, it was -- boarded by two sets of double doors. and one ceiling tile was it. that was damaged. and then you know, we walk out and i see the rest of the hospital. i'm just -- i'm amazed. i can't even feel just how blessed we are that we walked out. >> and to find out what you can do to help victims of the oklahoma tornado, log on to cnn.com/impact. this week you may have seen

this, actor brad pitt told "esquire" magazine that he's so terrible at remembering faces that he wants to be tested to see if he has a condition known as face blindness. it may sound odd to you, i can tell you it's a real disorder. i had a chance to explore this with a famous neurologist, dr. oliver saks, who suffers from severe face blindness. >> oliver saks may be a world-famous neurologist. but there's one simple thing, something important, something most of us take for granted that he can barely do at all. that's to recognize a face. even a famous one. >> this one. soft focus. the owner of this face is looking tough. but i, i don't know who it is. >> sometimes i fail to recognize myself. >> even yourself? >> yes, i have occasionally started apologizing to a, a clumsy bearded man, only to

realize that this is a mirror. >> he's face-blind. it's a rare and incurable condition that he's had since birth. sacks suspects its genetic since his brother suffers from the same condition. he can see each facial feature just fine, but putting it all together, that's the problem. >> how about this picture? >> that is very beautiful. a model or an actress. well i suppose one thinks of marilyn monroe. >> you're looking at me right now. can you describe what you're seeing? >> you have very beautiful white teeth. so i would recognize you especially by your teeth. >> you see, he finds a way, a way to adapt. >> i mean now i've outed myself about face blindness. it makes it easier. >> would you want to be cured of this if you could? >> i think so. i think if i was suddenly presented with thousands of familiar, potentially familiar faces, i think this might overwhelm me. >> let me give you a quick word

of explanation. let me show you on the brain model. this is the front of the brain over here and this is the back of the brain. what happens is the visual system of the brain begins here in the back called eed occipit lobe. did collects information and sends it to a different region, the prital part of the brain where those pieces have to be turned into a coherent hole. in face blindness something goes wrong with that process of putting it all together. next up a another strange turn in the trial of jodi arias. what her statements to the court may say about her mental state. she's still the one for you -

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literate so they, too, can add that dimension to their lives. >> that's jodi arias. essentially pleading for her life. she was asking the jury to sentence her to life in prison, instead of death. as you, i'm sure you know, she was convicted this month murdering her boyfriend, travis alexander. now, javier mador is a clinical psychologist. he's worked on more than 60 death penalty cases. welcome back to the show, javier. >> glad to be here. >> we haven't talked about jodi arias on this program. but i got to tell you, that statement was so striking. it caught my attention. i know it caught yours as well. you've worked with a lot of defendants who are essentially in this position. begging for their lives. she seems off. i mean, i don't know what to make of it. what did you think? what were your impressions? >> everything about the death penalty phase of this trial seems very off. given my experience working on over 50 death penalty cases. first of all you rarely, rarely see a defendant present their case as a witness. which is what's happened here.

you'll hear statements of remorse, statements of taking responsibility and so on. and even of asking for forgiveness that are very well thought out and worked on together with the defense attorneys. but in this case, jodi arias obviously has had a very tumultuous relationship with her defense attorneys. i've never seen anything like this. >> you're saying, suggesting her lawyers couldn't stop her. they have this tumultuous relationship. but you also expect in some part during this trial that other people would have testified as well on her behalf. friends, family, people who knew her? >> sure. that's what typically happens. i mean -- i've been in trials where school teachers from third grade will testify. aunts, uncles, patients. all of that may have indeed been on the table. but she clearly is, defense attorneys might say a difficult client to control. >> i want to get your impression of what you mean by off.

but let me ask you this. you know just watching this again. is it possible that she's sort of to use the adage, crazy like the fox, that she's somehow trying to manipulate the jury? that this is just an act or trying to get attention? >> if the prosecution expert is correct, and she has, has a borderline personality disorder, in some ways there's an immaturity at an emotional level, a kind of self-a sense of self-worth that's just gone. so you see these frantic attempts for attention. your comment about attention, that may in fact have been driving her motivation to do this more than anything else. that and all the media interviews she has given. which i can assure you there's not a defense attorney i have ever worked with, who would encourage a client facing the death penalty to do an interview. >> so given the fact that she does have this borderline personality disorder.

>> that's an actual mental illness, when you talk about borderline personality disorder. >> you're very good about not diagnosing people from afar. but did you think that's what this is? >> if you rely on the prosecution expert's diagnosis, borderline personality disorder affects about three million americans. we don't know the cause, there are a great number of studies in the last decade suggesting some neurobiological differences and also trauma in her childhood. trauma at an early childhood that didn't come out. maybe there's something there that she didn't want to have come out. >> that's fascinating. a lot of people are paying attention to it. appreciate having you on. always learn something. and coca-cola is under fire for selling junk food, you've heard this before. they say they're going to be a leader in healthy living. the chairman and ceo of coca-cola joins me next. doris taerbaum finished her first marathon at 50.

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we talk a lot about the obesity epidemic on this program. today we'll hear from the chairman and ceo of coca-cola, who just launched what he calls global commitments to fight obesity. it's a pledge, essentially, they pledge to offer low and no-calorie drinks in every market where coke is sold and provide nutritional information, including calorie counts on every package. support physical activity programs and market responsibly. which means no ads specifically aimed at children under 12 anywhere in the world. the head of coke, mutar kent made that announcement in atlanta alongside the mayor and the governor what is driving this primarily, would you say mr. kent? is this fundamentally about the health of people all over the world? or is this, i mean this is still a corporation, how do you balance the bottom line with public health? >> sanjay, what is driving this is the fact that we all know obesity is a complicated global

societal problem and issue. and we in coca-cola have led for 127 years, it is effectively 127th birthday, we're 127 years young today and we want to lead. we want to offer an invitation also to partners who want to come and partner with us in helping to become a part of the solution for this very complicated and very important societal issue and challenge. >> do we have enough science, mr. kent, to help guide some of these decisions in terms of what is a healthy amount of activity, lifetime? what is the right diet? how do you sort of decide what you're going to recommend around the world, and based on what science? >> well, i think there is naturally important gains to be

made through better evidence-based science. no question about that. i think the more we have of evidence-based science on this matter, the better for all of us. however, there is one simple fact. and that is, energy balance. amount of calories people consume. and amount of calories they spend. and i think we all know that taking in calories, consuming calories is more fun than spending calories. and therefore, what this all of this intends to do a little bit is to make spending calories also a little bit of fun. a little bit of challenge. fun, for communities around the world. >> we talk a lot about the low and no-calorie options that coke offers and there's plenty of them. i'm curious, when we look forward, maybe ten years, 15 years from now, will coke in the red can, the iconic coke, do you think that product is going to change at all? there are some who say look, sugar calories are just different than other calories. all calories are not the same

and therefore, these sugary drinks have to change. do you think coke will change? >> i think the important thing to understand is that all calories count. and i think the important thing to understand is that we have. we currently offer 3,500 products. those with calorie, those with low amount of calories. those with no calories. and there is a place for all our beverages in an active, healthy lifestyle, that has a sensible diet, that has regular exercise, and also that has a lifestyle that is associated with active, healthy living. >>s as you know, mr. kent, we have a shared interest in trying to make america and the world a healthier place, so hopefully we'll be able to keep track of the progress. thank you so much for joining us. >> thank you very much for giving me the opportunity, sanjay, thank you. up next, fighting heart

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[ telephone ringing ] now a waiting room is just a room. [ static warbles ] heart disease is the number one cause of death in the united states and in many places around the world. heart failure has been considered irreversible, but recently there have been breakthrough trials that use stem-cells. a key part of this whole thing is dr. roberto bali, a cardiologi cardiologist, born in italy and found his life's work here in the united states. >> the program with the heart attack is that a certain section

of the heart dies because of lack of oxygen and is replaced by a scar. they develop heart failure due to the loss of muscle. >> i was taught in medical school and everybody else was taught until recently, well, that's too bad. we cannot regenerate. this was the first trial ever of cardiac stem-cells in patients. what we found was that already four months after infusing the stem-cells, there was a remarkable improvement in the function of the heart. for the first time, we have a therapy whose goal is not to damage control, but elimination of damage. replacement of the scar with new cardiac muscle. i think the stem-cell evolution is going to produce a dramatic

change in the way we practice medicine. i think it's the biggest revolution in med significance over our lifetime and it really opens up a new, exciting therapy that could revolutionize cardiovascular medicine. you hear the phrase "time equals brain" when it comes to recognizing and treating strokes. basically the same is true of heart attacks as well. here's some symptoms to look out for. chest pain is the most obvious and it can radiate to your left arm or your neck and jaw. but remember not every heart attack causes chest pain and that's especially true of women. other signs, shortness of breath. nausea, vomiting, feeling very sweaty for no reason. or even having sharp pains in your back. one thing to keep in mind, these symptoms can come on very quickly. if there's any doubt, call 911 or go to an e.r. immediately. the american heart association recommends chewing a non-coated

adult as princippirin as well. that's going to wrap things up. but stay contacted with me and let's keep the conversation going on twitter. time for a check of your top stories making news right now. you're in the cnn news room, i'm joe johns in for don lemon. we begin with breaking news -- san antonio, texas is reeling this hour, floodwaters have been rising all around the city all day long. up to ten inches of rain have pounded the area since just last night. san antonio is one of the most flood-prone cities in the country. but no area could handle the kind of downpours they've had today. and you can see the results -- the flooding has killed at least one person and another person is missing in, and the water is going to keep rising for a while. it simply has no place to go. >> it was under water 20 minutes ago. i came over