flight 370. could be the are plane's flight recorders. crews are racing to find the black boxes bip before the batteries run out. i'm morgan radford, those are your headlines. "consider this" is next. >> more school violence shocks america - this time with knives instead of guns. >> ken burns' film of history helps some in the present. >> n.a.s.a.'s other worldly ideas revealed - from avter toids people potentially living in outer space. >> and why what you thought you knew about college students is probably wrong. >> hi, i'm antonio mora, welcome to "consider this". here is more on what's ahead.

>> 20 people injured after a student went on a stabbing spree in peninsula. >> i walked to the exit, there was blood on the floor. >> the juvenile was flashing two knives, walking down the hallway. >> ukraine to remove demonstrators by force. >> pro-russian demonstrate scores are not backing down. >> 40,000 russian troops are amassed along the border. >> australia announces one of their vessels picks up two more pings. >> we are more confident than before. >> we are introducing is a tradition, memorizing the gettysburg address. >> in is one of the most famous speeches. >> we begin with a brutal attack inside a school. before classes began at franklin regional high school at peninsula on wednesday, a 16 yert boit -- at pennsylvania, on

friday, a 16-year-old went on a stabbing spree. >> we have a couple of critical patients. it seems like everyone will survive. >> that's the good news thanks to students, security guards and the principal, who tackled the suspects. >> mr king was in action going after the attacker. he didn't have time to react. he tackled him, i was behind him. >> education secretary arnie duncan called it a tragedy serving as a reminder that children and staff deserve to work and learn in a safe environment. with so much violence across the nation, how do we ensure the safe environment, regardless of what the weapons is. >> joining us from peninsula, and patrick tom arsy, the attorney for the 16-year-old, who was arraigned as an adult.

good to have you with us. you met with your client today. can you tell us what condition he's in and what you think happened? >> well, he's obviously depressed. this is a young kid that, if you looked at him, you would think he was more like 12 years old than 16. he's very small statute, a young man. the family is devastated by this. they are - send their best to all the alleged victims here. there was no warning for this. this young man, if you meet him, he's stable, he has no history of any kind of psychiatric problems. he's never been in trouble. he's not a loner, he's not a kid that others would say is a weirdo. he's a b student, interacts well. at this point, quite frankly,

it's unexplainable. myon, the job of professionals -- my job, the job of professionals is to get to the bottom here, figure out what happened and why it happened. >> as usual in these stories, as the news brachts, there's all sorts of reports -- breaks, there's all sorts of reports. some said he was bullied, some say there was a threatening phone call. do you know anything like that. ? >> i met with the da for a long time before the arraignment this evening, and he didn't know of any of those facts. i'm not aware of anything about bullying. of course, you know, we are just getting started on this. it will take a long time to figure all this out. i literally spent this evening, less than an hour with this young man. i'm not sure where it's all

going to come out. but we'll figure it out. >> there are reports he said after he was arrested, that he wanted to die. did he give you any idea of what could have happened here? >> well, he did say that. you know, keep in mind this was a young man that just went through a horrible scenario in what he did. you know, it's not excusable, and he's coping with what he did right now. and, you know, it's not unusual for a young man of that age to say just exactly what he said. you know, he - they say things like "i don't ever want to see my parents again", because he's disappointed them so much. this is a good family. it's unexplainable at this point. as i said a minute ago, we'll get to the bottom of it.

>> we appreciate you joining us to give us your perspective. for more we are joined from tampa florida from curtis, the director of the school of safety adcrow case council. good to have you with us. we are left wondering how something like this would happen. you heard the suspects lawyer, that he was a good kid, no problems with the law, no mental problems that he knew of. what can we do in a case like this. how do we possibly stop this? >> well, absolutely. these are very, very difficult questions to be answered the day after a tragedy like this. we really have to look at the way we address school safety and security. we are so focussed on right now the active shooter and guns on the campus. we have been trying to train schools for some time and look at active threats, whether it be

a gun or any other threat. it's hard to look at the incident in pennsylvania, and there is more information coming out. whether there was a mental health issue, they are all on the radar screen, and we have to hone in on the mental health aspect, the school psychologists, counsellors play a role. that's where we'll found a lot of answers in the days to come. >> we don't know what happened, and the fact that there hasn't been clear mental problems doesn't mean they weren't there. you have school psychologists and others at school trained to identify things early. >> when we look back at post columbine and sandy hook we find indicators that stand out in most of these cases across the

country. and those are the kids often communicated about the issues prior to them happening. there in lies the key. we know kids talk about these things, we have to have avenues for the kids to report them, have good communication on the schools. not necessarily walking into an office and telling an administrator, but having anonymous texting. you have to bring that style of communication. we have to reinforce that, especially in bullying victims. it's 24/7. it's inherent that schools have to have strong partnerships with first responders, police departments, school research officers. >> the school seems to have done a lot of things right. they have safety programs, two security guards were involved in stopping the boy. one was injured gravely as a result. is there anything other than sort of early identification of

mental health issues that can be done to protect against somebody who decides to be violent. be it with a gun, a knife or a bomb? >> interview after interview there in pennsylvania, i heard so many parents saying they just didn't think it would happen at the school. it can happen at any school at any time. not that you would want to snd the kid to school thinking that it would happen. >> administrators and school leaders, we have to move away from the mindset, but it can't happen here. we have to look after school problems, it's something we look at every day to make sure we mow what to do when these things happen. >> i am sure a lot of schools are reviewing security programs. what do you think in this case. we are used to seeing horrors happen because of guns.

now we have a case where the boy used two kitchen knives. a psychologist analysing this said it was a disorganised homicide attempt, and using a knife shows deep anger, wanting to inflict pain. again, how does something - how does something like this happen if there haven't been clear indicators in the past. >> well, again. it has to - the whole mind-set has to change in the school, and move away from the school shooter. we are so focussed on that and the gun. we need to get away from that mind-set. and in days to come, i guarantee you'll see issues come out that are going to be mental health related in this case, as we have seen in all the other cases of school shooters and threats. again, i think that remains our best opportunity to move away from just focussing on the gun, and more focus on mental health

and having folks address the needs for kids. >> knives and guns can be identified by metal detectors. there's not much point using them, because many schools have multiple entrances and are simply not practical when you have 1,000, 2,000 kids trying to come to school at the same time. >> absolutely. what we found in the school safety assessments, you know, it's a false sense of security, and it truly is expensive and time consuming it start creating an airport environment where check-ins and bags are screened and all other doors are checked. from the first time a student hops on a bus to go to school, to the time they arrive, we go to schools all the time. we may not see an administrator or guidance counsellor.

it's the simple things, low-cost things, making sure we know who the kids are, knowing what is going on in their lives. they have the greatest meaning to stopping some of these, and they stop some of these tragedies. >> let's hope something can be done to avoid the tragedies. appreciate your time, thank you. >> ukraine's government is setting a friday deadline for pro-russian activists who have taken over government buildings in eastern ukraine to end their protest through negotiations or force. protests continued for a fourth day as photos were posted on twitter it illustrate estimate of 40,000 russian troops massed on the boarder. russia insists there's no cause for concern, but chuck hagel says the west is looking at all

options. >> general breedlove has been tasked by n.a.t.o. to come up with additional measures and options. he'll report those back to me, as well as to n.a.t.o. we don't take anything for granted. >> for more, we are adjourned from ukraine by buzzfeed's mike giglio. the ukrainian government ejected protesters from government buildings and other parts of eastern ukraine. demonstrators are holding on, and they captured sunday in donetsk. you have been in there and talking to these people. they told you that russia is not paying them. are ukranian officials going to try to evict them? >> i think officials are playing it safe. the governor gave a press conference and walked back the friday deadline, and reiterated that they don't want to escalate the situation. with the amount of people in the

building, armed with clubs. there are reports and i heard officials say they may have weapons. there's a sense that a move by the police would escalate things. and the government will try to avoid that. >> let's talk about the military situation. you went out with ukrainian fors on wednesday, and the message from kiev is that ukraine will use its troops, defend itself, but with the russian troops on the border, how big of a fear is it in that area that the russians will invade? >> it's like they are hoping it won't happen, because they really don't have any means to defend themselves. i have been at a lot of bases in donetsk and other places that may see a participation invasion. they have rushed forces to the border, but they have limited supplies of weapons, their tanks are no match and mann power and training. people say that they are not expecting an invasion, they believe russia is trying to

influence the region and unsettle it ahead of elections to legitimize the elections and exert control. they are hoping that it ends at that and it won't become an invasion. >> what do they think that russia wants. the "new york times" said on wednesday, that what the russians really want is for ukraine to have a federal system of government that has strong regional gorst that russia can influence. >> this is what the authorities right now are saying they believe russia wants. if you speak to the officials. they are clear. they want it to lead to joining russia, just like happened in crimea. i spoke to young people bussed in from crimea, after the building was taken. they were here to support the protesters.

ukrainians are concerned on the other hand if that happens ukraine becomes a federalcm. >> proyou cannians see federalism as a trojen horse for russians to exert control if the region were to join russia without the costs. so you have a peakened government, central authority and room for russian fluence to sway the region. as opposed to crimea. there are more native ukrainians in that part of ukraine. if the forces aren't strong enough to fight the russian invasion, what makes the area more dangerous for the russians is there could be some sort of resist apps, and that -- resistance and they wouldn't have an easy take over as they did in crimea, and as russian

troops started to die. vladimir putin's take over would have serious problems. >> right. i have spoken to a number of ukrainians here, who are planning guerilla warfare, and gathering themselves for self-defence and collecting weapons, saying if russian troops come, and we hope they won't, we'll defend ourselves and they'll start a part scan war -- partisan war. some of the level-headed protest leaders that i spoke to made the same point. this is not crimea. there are a few thousand aggressive pro-russia protesters ouching the building. the wider population does not support ascension to russia. among ethnic russians, there's resistance of that idea. i think you'd see commercial resistance. i think russia knows that and that's why you are seeing more confidence from authorities here

and crimea. an invasion won't happen. they can't see russia making the decision. it will have repercussions on the local stage, and why they are guessing that the unrest here is more for political ends and destabilize the presidential elections than it is as a precursor to invasions. >> ukraine says they'll talk to the russians, they haven't recognised the new ukrainian government. appreciate you both joining us. >> coming up, new developments in the hunt for the missing malaysian airliner and why searchers feel they are closer than ever. also, what is endangering some of america's well of known rivers. the new list of the ones most threatened. and harmeli aregawi is tracking the top stories on the web. what is blacking. >> a university changing its mind about who it wants to give an honorary degree to and people

on social media are fighting over the it. let us know what you think. join the conversation at at:

>> wednesday marked day 33 for the hunt for mair leans flight mh370 -- mair mines flight mh370. and searchers are confident they are honing in on the plane's

location. >> i'm now optimistic that we will find the aircraft, or what is left of the aircraft in the not too distant future. >> the signals from first picked up over the weekend in the southern indian ocean. about 1400 miles away from perth on the western coast of australia, before contact was lost. on tuesday signals were detected, giving hope that the search areas may uncover the location. lost plane. joining us from seattle is mike williamson, a marine physicist. he is a founder of williams and associates. planes and shipwrecks. searchers have heard four series of pings in the 17 mile area, yet they can't say for ascertain that it's the right spot. how much more will it take, do you think, before they know for sure that this is where the

plane went down? >> this is a positive development. the pings have been detectived and over a large area. it -- detected and over a large area. it would be helpful if more pings could be used to limit the search area. it's a large area to try to search with sonar. >> it's still a large area, as you said, but it narrowed dramatically. as we heard, angus houston, head of the joint agency coordinating the search, said it has not narrowed enough to use the submersible vehicles to search for the wreckage. at what point will those be able to be used or will it make sense for them to be used? >> as long as they can detect pings from what is thought to be pingers in the voice recorder and data recorder, they should continue to refine the location

of those devices. it's much more efficient to do that with the pinger locator than it would be with the bluefin. >> the bluefin works with sonar. there's report that there's deep silt on the ocean floor. would that be an issue for the sonar, in finding whatever wreckage is there? >> i would be surprised if there was a silt problem. the southern ocean, there's no direct rivers that could input a lot of sediment. i think the silt would be very minimal in these areas and these water depths. >> how about the depths. submersible have a range of about three miles, the ocean floor is bigger in some areas. how big a problem would that be. >> at this location they are at the depth limit of the bluefin, but other assets are operating

to 6,000 metres and could handle the depth easily. the bluefin could probably handle the depth that they think the wreckage may be in right now. >> what's if it is found that the plane is there. how long before salvage can begin? >> locating the wreckage would be the first stage to then set up for actually finding these pingers within the wreck. and that would be done with an rov. that would bring in more assets, other ships, and might take weeks to go through the debris to find the individual recorders. and then based on information that may come from that, there might be pieces of the wreckage that would be needed for forensic analysis, and there are again that could take longer, maybe months worth of work on the wreck site once it's

located. >> if the black boxes are in a significant side of wreckage, would the whole sections have to be brought up before they could be accessed. >> that's not usually the case. usually the wreckage is pretty well scattered around, and it's a matter of sifting through small pieces of debris to find the well-built, solidly constructed recorders. >> and, of course, the problem is that the battery life on the pingers may be dying quickly as they reached their normal life span. >> good to have you on the show. thank you for your time and expertise. >> turning from the massive search in the ocean to the quest to save rivers. what kills them. the latest report is out. drought is a reason why some rivers made the top of the list.

others, the mississippi, and the colorado, are listed for a host of problems. christopher williams joins us from washington d.c., the senior vice president of conservation at american rivers, the group that put out the list. >> how endangered are the rivers now, compared to the past? >> well, we have seen some improvements since the past. it's been a long time since we have seen a river catch fire like the cowahoga. water quality is better. in many cases connectivity and flow is better. rivers face challenges, particularly with climate change and drought conditions becoming worse and worse. there's steers problems with pollution as the spills in west virginia, and in carl -- carolina, toxic chemicals and coal ash. rivers are chopped apart by dams

and infrastructure, impacting fish and wildlife. they face uj challenges. >> -- huge challenge. >> the samwaking provide water for the city and for farm land. drought is part of the problem. in addition to that, are human actions to blame? >> yes, they are. the sa mm hm oking river suffers from an outdated management regime. under good conditions, about 70% of the no is diverted for agriculture, industrial, domestic uses, supplies during water for millions of people, supports agriculture across the valley. as a result the river faces problems - water quality, habitat for fish and wildlife.

flow and interruptions. so these diversions are really damaging the river and have for a long time. draught is a phenomenon. there have been droughts before and in the future of the the way to deal with them is to put in place a modern management regime emphasising conservation, aquifer recharge and other 21st century tools. >> you think it can be managed. many of the things you pointed out a human needs, we need waters for. there are ways of satisfying the needs and managing a river so it stayed healthy. >> it's through conservation and efficiency and storage of water in times of plenty. in a place like this, there's a lot of things that can be done to improve water use, efficiency of water in domestic use, and we

should mind the conservation principles at all times. in years of plenty, we need to store the water through aquifer recharge, where we can store water in aquifers in the ground, rather than expensive and costly infrastructure. >> problems with rivers means problems for fish and wildlife, people that may think they are unaffected. what is the consequences for problems with rivers. >> for americans that love fish and wildlife, they have to care about the rivers. the majority of animals on the endangered species list, if you love wildlife and nature, riff are essential to that. but there's also an incredible economic value to rivers. the fishing industry produces billions a year from anglers, and fishing enthusiasts.

there's a recreation industry as far as rafting and hiking that produces millions ever dollars and hundreds of thousands of jobs, never mind how much we depend on rivers as water sources. we depend on riff to dispose of our waste, and to transport our goods. the economic value is almost beyond imagining, and the way to preserve that economic value is to preserve healthy, vibrant rivers. >> can rivers be saved? have they been saved in the past when attention has been called to problems like we are seeing, with the mississippi river and the upper colorado river. they can be saved, and we'll give you examples from the most endangered list. one of the biggest removals is

up in the elwa, and that was listed as an endangered river, and the hoback river threatened by oil and gas extraction was put into permanent application as a result of the listing. we are seeing now in bristal bay alaska. we listed the rivers and brought attention to that. as a result the epa is looking at trying to prevent further damage to the rivers of bristal bay. we have seen rivers cleaned of polluti pollution. protected under the wild rivers act. management of stormwater in cities improved to reduce polluted run-off into rivers. there's all sorts of tools available. we just need to have the political will and the resources to do it. >> the issues are across the

country, and this is just the top 10. best of luck with your efforts. >> time to see what is trending. let's check in with harmeli aregawi. >> there's controversy over who brandice university is not honoring. they were supposed to give an honorary degree to a somalian human rights act just. he renounced her faith after suffering abuses. ali is known for criticism of islam. she said "once it's defeated, it can mutate into something peaceful", i think we are at war with islam, and there's no middle ground with wars. there was a call for ali's invite to be revoked. 350 faculty members signed a warning. it wasn't i ware of some of

ali's past colleagues. ali called it scarcely credible. megan kelly was surprised by the university's decision. >> it is controversial. >> that's what universities are. we send the kids to school to be confronted with ideas that they are not comfortable with. >> a lot of you weighed in on the website. lara said: >> michael disagrees: >> you can join the conversation on the website aljazeera.com. and let us know what you think on twitter. >> straight ahead - the man

considered our greater documentary film-maker ben burns using a 150-year-old speech to help kids today. he joins us next. the average college student has nothing to do with frat boys and sorority girls, from age to how long it takes them it graduate. data dive is next. n.a.s.a. wants to make science for example a reality - from redirecting asteroids to setting up human colonies on other words.

>> the most celebrated speech in american history is a funeral oration that drew little attention when it was delivered. it only takes about 2 minutes to recite. president abraham lincoln's gettysburg address. his stirring call four months after the battle of gettysburg for america to resettle its ideals resonated ever since, especially for students at a learning school where boys with learning difficulties memorise it and recite it. their moving story and the lasting cry of lincoln's cry for a birth of freedom are the subject of a documentary that will air later in july. the creator is documentary film-maker ken burns, who i spoke with about the address and

other projects about our program. the interview will air on al jazeera america. here is some of what ken burns had to say. great to have you with us. the civil war was your big breakthrough. you had been nominated for oscars before. why had you decided to go back and deal with an important part of the era. >> people ask me how i choose my projects, and they chose he. this one, more than any, chose me. i live in a tiny town. in putney vermont is another town. there's a school that asked me to be a judge at the gettysburg memorisation thing. i went and wept. i cried at the inspirational nature of it and said somebody should make a film on this, but it's not my style. i would go back when my schedule permitted me to be a judge, or

just to help the kids, and as 150 was approaching i said we have to do this. i have to put my money where my mouth is, so i wanted to make a film about the heroic struggle. it became clear that we had a larger aspect. it was challenging the rest of the country to do what we never do, to have everybody memorise it. if the boys can do it, we can too. >> you have five living presidents, actors, singers, sports stars and all sorts of people, let's take a look. >> fore score and seven years ago. >> our fathers brought forth on this continent. >> a new nation conceived in liberty. >> now we are enguaged in a great civil war. >> testing whether that nation and any nation so conseized can long endure. >> why is it important for people to go back and mem yorize

the address. >> we have lost something, our educational moo. one of them is we stopped asking people to memorise stuff. it wasn't good and there wasn't relevance. but it crystalises something. for boys at the greenwood stool. it's a tallizeman. so we reached out and no one said no, and history is a table around where there's a civil discourse. we have nancy pelosi, marco rubio, we have all five living presidents, and do they see eye to eye on what is happening now. no, they don't. but if you love abraham lincoln, that's where it begins, to appeal to the better angels of

our nature. it's a way to begin to repair what we have lost in our you'd u kagsal system. >> memorisation may lead to better understand. >> let's have a listen. >> our brothers. >> brought forwardism on this. >> now nation. >> to the proposition. >> that all are created equal. >> it ends up being a lot of work for a lot of them, but it has all sorts of tremendous effect. >> it does. they suffer a learning difference, dyslexia, adhd. a whole alphabet soup of stuff. some can memorise it but are terrified to speak it out loud. particularly a big crowd. public recitation - some of them have language difficulties that make it hard to memor ice are

speak. it's a boarding school for kids that should be at home, and they are held together by the loving kindness of the school, and the sooup imposition of the gettysburg address. the kids help each other. it's inspirational what takes place. >> especially on the day when they go in front of the public and speak about it. let's see that. >> that we here highly resolve that the dead shall not have died in vain. >> the nation under god will have a new burst of freedom, and that government of the people, by the people, for the people val not perish. >> so that is beautiful max. i took that with my smartphone because i realised we were

covering the parent reactions while they were giving the address. when i saw him coming back and i knew that max knew the speech cold, but was terrified about doing it in public. an hour before he wasn't going to do it, and he did it and did it magnificently and came back and melted into his mother. it expresses his exualation. >> as a parent it must have been a great moment to see. that was from my conversation with ken burns. you can watch the whole interview on "talk to al jazeera". . >> coming up, n.a.s.a. has big news when sending people to morse is not the biggest headlines. that is next. modern day college students, how the conventional wisdom about who they are is wrong. our data dive will set it straight, next.

>> today's data dive re thinks the profile of the average college student. this week a stereotype of a teen out of high school was busted. the majority of college students are 22 or older. the average age is 24. newer than half of all students sustained school full-time. the education department reports 20% of students are in community colleges or part-time students. most do not live in dorms. only 14% use campus housing as of 2008. 24% lived at home or with relatives. most clems accept -- colleges accept most applicants. 84% admit at least half applied. 40% of private nonprofit schools accept three out of four who apply. the most selective school is

stamford, rejecting 95% of applications, harvard and yale 94%. then there's debt. seven out of 10 students take out loans to graduate, and it has shot up. the average amount borrowed for a 4-year degree is $29,400. even with that debt a lot does not graduate at all. indiana researchers found 56% of students started college in 2007, had graduated by the end of 2013. that means a whopping 29% dropped out. n.a.s.a. has big plans on the horizon. how big. try throwing an asteroid at the moon, and preparing to set up human settlements in outer space.

>> n.a.s.a. was front and center before a senate subcommittee with perhaps of missions to mars, and sending a manned spacecraft to an asteroid to knock it into the mon's orbit. >> we'll grab a piece of the solar system, deflect it around the earth, the moon, and insert it into a distant retrograde orbit where the crews can visit. we'll bring in dr derek pitts, great to see you. i love the way tee said that in the most matter of fact way, as if it was nothing. sounded like science fiction on capitol hill. could you shane the asteroid story to me. we land on one and knock it into the moon's orbit. why? >> the way to say it is that we would capture an asteroid of a

reasonable size, meaning it's manageable enough, we could move it from an after i had belt position, towards the solar system or closer than that and move it into the moon and set it into an orbit to use it for practice for doing deeper solar system missions. it's nowhere next-door as easy as described, but the idea is to get people excited about something in the future that would be a challenge, adventurous and may give us practice for what to do if we make the deep space explorations. >> because the after out belt is further away from the moon. it's a longer flight to take, preparing them for a possible mission to mars. >> the real idea is if we are going to mount a trip to morse, and we have to think of that as

the ultimate goal. we feed to get astronauts prepared to make a long trip. the idea is to take a trip out about six months out, giving astronauts an opportunity to go some place and come back into the inner portion of the solar system. a trip to mars will last longer than that. we need to build up our cells. >> what about the talk on capitol hill about human settlements elsewhere in the solar system. how serious? >> well, you have to start some place, this is the dreaming portion of what we could possibly do. there is the reality of where can we go in the solar system that makes sense, other than to the moon and mars. does it make sense to make trips to the deep solar system? those are real challenging questions because the trips are long and the environments are not very

nice, nowhere near as benign for the moon and mars. but the idea of at least getting people excited about the possibility of an adventure to mars makes more sense, and if we can get excited about that, that gives us a target we can aim for, get the men people excited and move -- american people excited and move forward. >> so you think it was mostly a hub bike relations move, they are trying to get people excited to get more money because florida senator bill nelson who led the hearing, lamb ented that lots of n.a.s.a.'s plans were hurt because of budget woes. >> there's another piece to what was talked about today that is important. he talked about n.a.s.a. building an infrastructure that would allow us to do keep spak

interceptions, a system that would allow us to do all of these things in a well-structured manner, working to how the americaury and gemini programs were building blocks to the apollo program. it would not hurt n.a.s.a. to have four or $5 billion in the coffers to tackle the missions. that is it what is necessary. it's not a lot of money when you look at the budget of $17.5 billion, and compare to other agencies in the u.s. government. it's not much money, and doesn't take much money from every american taxpayers' pockets. >> a lot of n.a.s.a.'s science helped people out in day to day life. let's move to the avterral events that we have. they have the ends of days people talking. this week we had mars lining up with the sun, the earth in the middle. next week is a full lunar

eclipse creating a blood moon. can you explain this for us. >> all of this happening at the same time. what a worry. not to worry at all. in fact, the align. of mars along with the earth and sun is a phenomenal called knoigs. it's an observe that we can make, and happens every two years. it's not rare at all. most of the time it happened, without humans being aware that it's going on we can't ascribe much to that. >> what about the blood moon and why does it turn read. >> yes, it will. these are looupar eglipss visible somewhere. and the next will be visible across the u.s. because there are four altogether, it makes people think that there's something serious that will happen.

this kind of event is actually going to happen eight times this century. it happened a few more times in other centuries, less times and other centuries. it's a lucky instance, there'll be four totals in a row with no partials in between. we are fortunate because we get to see one coming up next week. if the sky is clear, visible across the u.s. >> there's only about 30 seconds left. this picture from n.a.s.a.'s curiosity mars rover, it shows a curious light. social media comments that there's life below ground and people are using lights like we do? >> we, they have their own led flash lights and are signalling each other behind our backs. not at all. the folks that use the cameras, they figured this image appears in one of the cameras, and not the other.

it indicates it's an artefact in the imaging system, rather than being something on the surface. if it was in the left and right camera, it may be something we'd have to investigate about an investigation off a rock. >> what a shame. it would have been great if it was a flashlight. thank you. >> welcome to al jazeera america. i'm john seigenthaler in new york. >> 48 hours - ukraine's deadline for pro-russian separatists who have taken over government buildings. what happens if they don't verandaher -- surrender. >> rampage. 20 students stabbed. late details on a teenage suspect and questions on security. compromise. the cyber bug that breaks password codes. what you need to do to protect yourself.