good suggestion, good point. >> this one's for sylvia earl.human remains from this depth? >> oh, quite possibly. they certainly would be preserved in that cold, dark realm. but, and with the manipulators on the recovery equipment, it's possible to pick things up. and there's precedent for, for that in previous kinds of operations. but first job is finding where the aircraft really is. and that's a big challenge. >> brett larson. let's take a look at this tweet from bob larson. bob says if airlines had to fully repay the cost of retrieving would they invest in technology to locate faster? >> oh, definitely. in a situation like this, a lot of technology that we've seen that could have prevented the problems we're seeing and this very expensive search, the most expensive in history, would definitely be something they would invest in. >> another tweet, this is about the cell phone. it says possible malaysian government only releasing cell phone info to convince the public their theory of foul play is accurate? >> if you want to go down the conspir

thank you sylvia, earle. appreciate you here on cnn. >> when we come back our team of experts will answer your questions. the cat that drank the milk... [ meows ] ...and let in the dog that woke the man who drove to the control room [ woman ] driverless mode engaged. find parking space. [ woman ] parking space found. [ male announcer ] ...that secured the data that directed the turbines that powered the farm that made the milk that went to the store that reminded the man to buy the milk that was poured by the girl who loved the cat. [ meows ] the internet of everything is changing everything. cisco. tomorrow starts here. bob will retire when he's 153, which would be fine if bob were a vampire. but he's not. ♪ he's an architect with two kids and a mortgage. luckily, he found someone who gave him a fresh perspective on his portfolio. and with some planning and effort, hopefully bob can retire at a more appropriate age. it's not rocket science. it's just common sense. from td ameritrade. (music) defiance is in o

we'll also profile two extraordinary local women, noted doctor sylvia earl, the former chief scientist much time on the ocean floor, and amy chow, a gymnast and member of the magnificent 7, the first american team to win an olympic

we'll also profile two extraordinary local women, noted doctor sylvia earl, the former chief scientistor noa spent so much time on the ocean floor, and amy chow, a gymnast and member of the magnificent 7, the first american team to win an olympic

director, jeff weiss is a cnn aviation analyst and the author of the book "extreme fear," and sylvia earleational geographic society. good to see all of you. sylvia, to you first. why will they be done mapping this search area so much quicker than all had been thinking? >> well, it really relates to focusing on the most likely a a area, and it may not be in that area, but that's the most likely centered around the pings that were detected. so i think that's the answer. there's no guaranteeing that the aircraft is really in that place. but this is the most likely yar, and so they're focusing on that area. >> jeff, in your view, what's the best way in which to use this bluefin-21 at this point, even though while it's mapping unchartered territory, there is no sign of the primary objective, that plane? >> well, i think it's worth asking at this point whether the bluefin-21 is really an appropriate technology to be using at all. bear in mind the way an airplane search in such a situation is traditionally carried out is first you have a general idea of where the plane is, then you search from t

. >> stephanie elam, and sylvia earl, with national geographic. led many expeditions, what kind of information can you expect from this search of the sea floor? >> well, it is a challenging task for sure, with so much to cover and with limited capability. the bluefin is a capable system but it just has a lot to cover. and there are not many systems out there that can do this job. >> so tim, your company purchased a bluefin-21, so you know quite a bit about this. what are the advantages and disadvantages of this technology? >> well, one of the primary advantages is the system is not connected to the ship. so if you're in really rough weather, the auv is close to the bottom. it is unaffected by the ship's motion riding over the big waves. so with the towed system, there is a direct connection to the tow fish, so as the ship travels over big waves that motion woud be transferred back to the tow fish, so the quality of the data should be very good. >> good, i hear you're agreeing with him sylvia? >> i am, yes, if you're looking from high above you get

with that i want to bring in sylvia earle, a professor in ocean 0 graphics joining us and joined by thomasm teledyne systems and his company designs all manner of these devices. we have the top experts here. hello to you, tom, first, are we expecting too much too soon from bluefin, tom? >> no. let's say it's functioning the way it should function, an exceptionally robust system and it has a large area to search. you're looking at as many as 60 days in the water to cover the area defined as the most likely target areas. it's just going to take time, no other way around it. it's slow, arduous but a great system to do what it's doing. >> speaking of time, sylva to you, is it imperative to wait until the bluefin detector something to send down the orfd, a remote operated vehicle. >> it helps to have a target for the rfod, to pick up debris and cameras that can see more clearly what's there. they aren't good search vehicles. they're best for recovery. rov. >> can they stay down as long as a bluefin or no? >> rovs have virtually unlimited time. depends on their surface support. the man systems h

joining me is jeff wise in new york, oceanographer and explorer, sylvia earl in san francisco.uestion comes from phil. if mh-370 ran out of fuel, it seems that there would not be enough residue to create an oil slick unless they were carrying barrels of oil. well, it would come maybe from hydraulics or things other than fuel. >> right. well -- that's right. there's hydraulics, lube bricat oil. not every single molecule of fuel gets into the engine and is consumed. there's a little bit left over in the pipes, as it were. so this isn't a very big slick, from what we are hearing. it's a relatively small amount. bear in mind, we don't know that it came from the plane. but it's not inconsistent with a plane running low on fuel. >> the bulk of our questions in the beginning were about cell phones. was cell phone use allowed on this flight? if so, then did any passengers or crew members contact family or friends? i know we don't know yet but here's a question. is it likely? i don't think so. >> we know that they did not. >> no. >> and so that's why this is such big news today, about t

sylvia earl, thank you so much for joining me.ent and perhaps other resources and auvs. maybe other adivisional pieces of technology to help find this wreckage. thank you so much. coming up neck, massive operation showing top brass, if you will, in the troft organize meeting out there in the open. we'll ask. stay here. life with crohn's disease or ulcerative colitis is a daily game of "what if's". what if my abdominal pain and cramps come back? what if the plane gets delayed? what if i can't hide my symptoms? what if? but what if the most important question is the one you're not asking? what if the underlying cause of your symptoms is damaging inflammation? for help getting the answers you need, talk to your doctor and visit crohnsandcolitisinfo.com to get your complimentary q&a book, with information from experts on your condition. >> welcome back. yes men for yemen forces are going after al qaeda like never before. they include drone strikes and could lead to the capture or killing of some militants they have been hunting for qu

me in new york aviation analyst michael kay, former pilot with the british royal air force and sylvia earlorer in residence at the national geographic society. sylvia, with your experience in underwater exploration, i want to ask you first, if bluefin comes up empty in this search of this refined search area, they have been looking at for about a week now, what are the best options for the next step? >> well, re-evaluating the whole search area does seem like it would be the logical next thing to do. the reason that this place was chosen and it's such a tight area is that this was where the best sound was located, the ping that was the most promising. now, if the bluefin comes up with nothing after continued observations, at least it will have eliminated this part of the indian ocean as a place where the plane is likely to be. but then that means let's go back and look at the evidence that we had in the first place and see if there's a wider area that might make sense to explore. >> they have to go back and look at that data again. michael, the other phase of the search, we talk about subs

sylvia earle, thank you so much.ou. >>> straight ahead, more on the flight for the search of 370. but next, new details in the bus crash that killed high school students and chaperones. what witnesses say they saw before that terrifying collision. [ male announcer ] this is jim. a man who doesn't stand still. but jim has afib, atrial fibrillation, an irregular heartbeat not caused by a heart valve problem. that puts jim at a greater risk of stroke. for years, jim's medicine tied him to a monthly trip to the clinic to get his blood tested. but now, with once-a-day xarelto jim's on the move. jim's doctor recommended xarelto. like warfarin, xarelto is proven effective to reduce afib-related stroke risk. but xarelto is the first and only once-a-day prescription blood thinner for patients with afib not caused by a heart valve problem that doesn't require routine blood monitoring. so jim's not tied to that monitoring routine. [ gps ] proceed to the designated route. not today. [ male announcer ] for patients currently well