biggest public discussion on sunday, everyone seems to be weighing in, except the owner of that account. the issue goes back to e-mails sent and received when hillary clinton was secretary of state. she has acknowledged using the personal e-mail account exclusively as secretary. and it comes as she prepares to potentially announce a presidential bid next month. we start with julianna goldman in washington, d.c. >> i am thrilled. >> reporter: appearing in miami last night at an event for the clinton global initiative, hillary clinton made no mention of the e-mail controversy, but her silence is giving more questions and leading others to answer. ñrñcontroversy chelsea clinton was asked about her private e-mail use. >>ñi weiñi e-mail about things like thanksgiving dinner and plans toñ'içó watch a movie on friday night. you'll have to watch her. >> bill clinton did make a plug for transparency on a matter that is dog hillary hillary clinton's bid for the warehouse. acceptance of money from foreign governments. >> my theory about all this >> my theory about all of this is, disclose everything. and then let people make their judgments. >> the policy of my administration is to, complete transparency. >> in an interview with cbs news' bill plante, president obama said he only learned about hillary clinton's exclusive use of personal e-mails through news reports. >> i am glad that hillary is instructed, has instructed that those e-mails that have to do with official business need to be disclosed. >> with respect to the president, it is not up to secretary clinton to decide what is a public record and what is not. >> reporter: republican trey gowdy is leading the congressional panel investigating the 2012 when benghazi attack that uncovered her use of private e-mail. >> there are gaps of months and months and months and if you think of the iconic picture of her on a c-17 flying to libya, i can't sunglasses on and has her handheld device in her hand we have no e-mails from that day. >> reporter: that trip was nearly a year before the deadly attacks. the state department has turned over more than 800 pages of e- mails to the panel relating to libya, but gowdy said those gaps to subpoena clinton directly. even top congressional democrats are calling on clinton to release everything. senator dianne feinstein. >> her silence is going to hurt her. >> reporter: and aide to clinton didn't respond to a request for comment. hillary clinton is slated to appear tomorrow at new york and there is who doubt it will fuel speculation as to whether she will use that as an opportunity to finally address this issue. >> glor: julianna goldman in d.c., thank you very much. it has been a tense weekend in madison, wisconsin after a white police officer shot and killed an unarmed black teen on friday. and now we have more details on the incident. dean reynolds is in madison. >> reporter: at church this morning another american city came to grips with the latest death of an unarmed black youth at the hands of a white cop. reverend alexander agree asked the question of the day. >> this young man was our son. we have to ask ourselves do we really want this to happen? and it continues to happen on our watch. >> reporter: like the episode in ferguson, missouri last year what happened in madison on friday night is shrouded in ambiguity, but inflamed by emotion. the friday incidents emerged from a crackle of a police radio. >> reporter: while his mother said robinson was not a violent kid he did have a conviction forearmed robbery, on friday night officer matt kenny trailed robinson to this location, the apartment of robinson's best friend. when kenny heard a disturbance on the other side of a door he forced his way in and police say was attacked by robinson. chief mike cobalt. >> i am prepared to understand and accept the facts if there was more than one round fired. >> reporter: less than five minutes later robinson was taken to a hospital where he later died. officer kenny now on leave also went to the hospital with minor injuries. while the state department of justice will now investigate the incident, the police have perhaps a tougher job. >> quite frankly, somewhere, somehow, we have to begin the reconciliation process so that we as a department can be trusted again. >> reporter: right now, this is a town mourning the death of a young man, jeff, and so far it is doing it peacefully. >> glor: dean reynolds, thank you, authorities in california are investigating a pre-st. patrick's day party that ended when a roof collapsed at as carter evans reports it came after a recent crackdown at the school. >> reporter: it was only 6:00 a.m., but thousands of students were already partying, packed on to roofs when all of a sudden -- the video stops there, but this photo shows what is left of the garage where dozens of cal polly students gathered on the roof, among them were ashley vaughan and hayley westfall. >> i started hearing cracking noises and then the roof was gone. >> we heard about three seconds of it falling and people were just on top of us. >> roof collapse, 348 hathaway avenue. >> reporter: at least eight students were injured, after scenes like this, were posted on social media, cal poli president jeffrey armstrong said in a statement, this event raises significant concern about the judgment exercised by both the party organizers and attendees in january, the university placed all fraternities and sororities on social probation banning all parties after reports of sexual assaults and extreme intoxication of underaged students. the university and police are now investigating if any fraternity was involved in planning the event which students refer to as saint fratty's day. >> kids going to parties it is you kind of like know what can happen. >> reporter: but no one expected what did happen. carter evans, cbs news, los angeles. >> glor: a new report on the disappearance of malaysia airline flight 370 suggests everything about the flight was normal with one exception, the battery on the plane's locator beacon had expired more than a year before it disappeared. that happened one year ago today. 239 people were on board. in russia tonight a total of five suspects are in custody in connection with the death of opposition leader boris themes of all of the suspects are chechens two have been charged and two orders ordered to remain in jail without charges, another possible suspect blew himself up with a hand grenade as police approached according to russian state media. the head of the militant group boko haram released an audio message in which he appears to pledge allegiance to isis. juan zarate joins us from d.c. tonight with more on this. juan, how significant is this, is this pledge of allegiance? >> reporter: jeff, this is significant in the long-term this adds ideological weight to the islamic state, it gives it geographic reach into west africa and it ties very neatly this devastating and destructive group boko haram which has been so threatening to west africa to the program and ideology of the islamic state out of syria and iraq, so this gives the islamic state momentum and a group who once flew under the banner of al qaeda flies under the banner of the islamic state. >> glor: does this make isis more dangerous or boko haram more dangerous or both of them more dangerous? >> reporter: a little bit of both, in part because it puts ideological wind on the sails of both groups it connects what they are each doing in their own 0 territory, controlling territory, devastating terrorist attacks, kid manages and connects it and to other groups that are pledging, groups in libya, the egyptian sinai and even as far afield as uzbekistan and the philippines, in some way this connects their program and ideology and puts men and material potentially at each other's disposal. >>glor: juan zarate from dc, juan, thank you very much. >> reporter: thank you, jeff. >> glor: an interview with cbs news this weekend, president obama said the u.s. will walk away from nuclear negotiations with iran unless it can verify that country is not developing nuclear weapons. the talks have dragged on for two years but there was new signs of progress. here is elizabeth palmer. >> reporter: it is no wonder the diplomats working on the nuclear agreement were pleased this week, there has been a recent breakthrough. how close are we to a deal? >> we are closer than we have ever been. >> reporter: iran, its economy reeling from low oil prices and u.s. led sanctions have finally made a key concession. mark fitzpatrick is an arms control analyst at the strategic studies institute in london. >> the iranians agreed to limits they never agreed to before. they had been talking about not cutting anything, but now they are ready to cut back significantly. >> reporter: in a nutshell, they are ready to cut the number of centrifuges from 19,000 to between 6,000 and 7,000. centrifuges are used to make enriched uranium a component of weapons and crucially they are reducing the amount of enriched uranium from the seven and a half tons they have on hand to about 700 pounds. secretary of state john kerry was in saudi arabia this week to reassure iran's nervous neighbors that this is a good deal for them too. >> obviously the outcome of these negotiations will be of major consequences to the united states, yes, but really to the entire world. >> reporter: he has to convince everyone, especially skeptics in the u.s., that the new limits on iran would give the world a year's warning if it ever did decide to make a bomb. >> i think frankly one year is more than enough, you need time to detect any breakout, to have diplomatic solution attempt and then if that fails to take military action. >> reporter: now, in return for those major concessions, jeff, iran wants all sanctions against it lifted. and that is just not going to happen. so there is clearly a lot of hard bargaining to be done yet between now and the end of the month, when we expect to see the outline of a deal. >> glor: liz palmer, thank you very much. there were more events in selma, alabama today marking 50 years since bloody sunday, the violent protest against voting rights protesters, bill plante is in alabama tonight for cbs news just as he was a half century ago. >> ♪ ♪ when the saints go marching in. >> reporter: thousands jammed the edmund pettus bridge in selma today a marching and singing to return a turning point in the struggle for voting rights. monique davis wanted her four children to know how things have changed. >> you have to realize they didn't do what they did years ago obama would not be where he is at today. >> reporter: 50 years ago, what became known as bloody sunday, police beat back and unresisting group of demonstrators with clubs and tear gas. two weeks later, under federal protection, dr. martin luther king marched from selma to montgomery and the steps of the capital, where governor george wallace had declared segregation forever. today, wallace's daughter peggy stood on the same spot and embraced congressman john lewis, who was badly beaten on bloody sunday. >> there are opportunities for all of us to raise the call for justice in our lifetime. >> reporter: lewis joined arms with peg by wallace kennedy and led dozens members of congress to the memorial to those who died in the civil rights movement. >> to talk about that history -- >> i just knew what i had to do. >> reporter: at brown chapel back in selma, doctor, headquarters for the voting rights movement, attorney general eric holder urges a new generation to remember those who gave their lives. >> think about this. you think about all the other people who gave so much so that we would have the right to vote. >> reporter: in selma today and here at the state capitol, they commemorated the events which led up to the passage of the voting rights act but there was fear as well that the supreme court's removal of some of those requirements in that act could lead to new suppressions on voting rights. jeff. >> glor: bill plante, thank you very much. apple says timing isn't everything, that its new smart watch can do. and a solar powered plane gets set to take off on a trip around the world when the "cbs evening news" continues. continues. expanded minuteclinic for walk-in medical care. and created programs that encourage people to take their medications regularly. introducing cvs health. a new purpose. a new promise... to help all those wishes come true. cvs health. because health is everything. i knew instantly that this was...wow! it's crest hd. it's amazing. new crest hd gives you a 6x healthier mouth and 6x whiter teeth in just one week. it gets practically every detail. that's why it's called hd. try new crest pro-health hd. hey, how you doin'? 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[ m'm... ] [ tapping ] sounds good. campbell's healthy request. m'm! m'm! good.® >> glor: apple unveils its much anticipated apple watch tomorrow, it is the first time apple is venturing into the new product category since it revolutionized the tablet market with the ipad almost five years ago, business analyst jill schlesinger is here with more, jill, let's talk about the apple watch, what is new, what is different? >> well, the watch is basically an accessory to a iphone, five or six, you have to be in close proximity for the connectivity to work, watch will have several features, a fitness tracker, the ability to use your apple pay, maybe access to your apple tv, be able to use it as almost a remote control for smart home devices, all of course and there sawatch. >> glor: there is the big thing for a lot, this is by no means the first smart watch on the market. >> yes, critics are interesting in this, hey you know what this is a gizmo nobody needs of course they said that about the ipad as well but the is a higher price points, 300 is really what the market has, apple is coming in at 349 and i think what apple's bet is that 5% of apple users who have iphones will buy the watches, that would translate into 15 million people buying apple watches or 55 percent of the smart watch market. it is also interesting how they are marketing this. >> yes, they are going high fashion on this at, a 12-page spread in vogue, cover of self magazine, they are even talking about redesigning some of their stores in order to accommodate jewelry cases, they have got a couple of models very high end maybe $1,000, mid-range, a $5,000 model, it all comes down to the battery life, actually, a lot of the critics are saying if they don't have a long enough battery watch they won't something that dies out after a few hours, we will just have to wait and see and of course time will tell. >> glor: that's right, jill, thank you very much. >> thank you. >> glor: chrysler is recalling about 73,000 s.u.v.'s and mini vans because of ignition switch problems. federal regulators say the switches can unexpectedly turn off the engine. the recall covers 2008, to 2010 dodge grand caravan and chrysler town and country mini vans and 2009 and 2010 dodge journey s.u.v.'s. you may have seen rory mcilroy throw his golf club in the water, up next, how he got it back. >> defiance is in our bones. defiance never grows old. citracal maximum. easily absorbed calcium plus d. now in a new look. 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 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signs or symptoms. do not take xarelto® if you have an artificial heart valve or abnormal bleeding. tell your doctor before all planned medical or dental procedures. before starting xarelto®, tell your doctor about any conditions such as kidney, liver, or bleeding problems. jim changed his routine. ask your doctor about xarelto®. once-a-day xarelto® means no regular blood monitoring, no known dietary restrictions. for information and savings options, download the xarelto® patient center app call 1-888-xarelto or visit goxarelto.com. >> glor: it appears to be a remarkable story of survival this weekend in utah, an 18- month-old girl was discovered by fishermen alive in the backseat of a car stuck face down in the river. it is believed she was there for about 14 hours. that girl is now in critical but stable condition at a local hospital, her mother did not survive. it wasn't the club's fault but when rory mcilroy hit a ball in the lake in the world golf championship in florida, he threw his three iron in after it. the good news, a scuba diver went in and retrieved the club despite the possibility of alligators and donald trump who owns the course gave it back to mcilroy. the club may eventually be auctioned off for charity. perfect day for spring training baseball today in tempe, arizona, 79 and sunny but just as the royals and angels were set to face-off, a swarm of bees gathered on a screen near the angels dugout there you go, it wasn't a total buzz kill, the game resumed after a brief delay. in abu dhabi, two pilots are preparing to make the first ever round the world trip in a solar powered plane. the solar impulse is scheduled to depart in the morning, it has a wingspan larger than a 747 but weighs only about as much as a car, with a number of stopovers it is scheduled to arrive back at the starting point some time in late july, if all goes well. from a solar powered plane to a solar powered bicycle we will take the elf for a spin. when we come back. elf for a 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called an elf, short for electric light and fun. >> it is a great mix of a car and a bike. >> reporter: it is actually a backwards tricycle fueled by bike pedals and a tiny solar powered motor that can carry passengers and car goes up to 550 pounds. >> this is a huge game-changer. >> reporter: it is the brainchild of inventor and former race car technician rob cotter, ceo of organic transit. >> what we are looking to do is take the bicycle experience and integrate it with car like functions. >> can you feel the power right now? >> yes. >> reporter: the elf requires no insurance or gas and it is emission free. it does 20 miles per hour with straight pedal power as the motor and the elf can do 35. >> the peddling, and all of this power. >> and it goes on its own. >> reporter: it is estimated the average elf could eliminate three tons of carbon dioxide objection from the atmosphere every year. >> this is a 100-watt solar solar panel. >> reporter: kotter built and sold 450 elves and plans to triple that this year. >> most of the planet, they don't have automobiles. they don't have cars. some hardly have roads. >> reporter: he is poised to scale into mass production to sales to senior centers. >> just have a bike permit. >> reporter: charlotte clark is a staffer at duke university where a dozen elfs park each day. >> i only put 5,000 miles on my car since i have the elf way less than half of what i used to. >> reporter: it may not be ready for the interstate but the elf is making inroads in local neighborhoods where people like charlotte clark hit the road every day. vicente arenas, cbs news durham, north carolina. >> glor: and that is the "cbs evening news" tonight, i am jeff glor, cbs news in new york. scott pelley will be here tomorrow. good night. captioning sponsored by cbs frightening holdup. how a father convinced a gunman not to take his car. a family trip to a mall turns into a hold up. how a father convinced a gunman not to take his car. [music] california couples to win the hearts of an expectant mother. facing anittallian landmark. the stunt a crowded mall shopping parking lot becomes the

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