>> don't try this at home. >> "techknow" where technology meets humanity. only on al jazeera america. >. >> you voted for change now change has come. [ cheering ] opposition candidate muhammadu buhari wins the tightly fought presidential election in nigeria i'm jane dutton you're watch, al jazeera live from doha. also ahead. more than 20 people are reportedly killed after saudi arabia-led air strikes hit a factory in southern yemen. talks of iran's nuclear future after a self-imposed deadline

expires. life at the limits. the u.s. museum that shows how nature survives in the most stream conditions the opposition leader and former military ruler muhammadu buhari is to become the next president of ryan nugent-hopkins defeating encum gant goodluck jonathan in a closely fought contest. he asked nigeria's to remain respectful. >> this was hard fought. emotions were high. we must allow them to help us. this is the time for confrontation. this is a moment to hear the words, and talk about the

future. [ clapping ] we do this first by extending the hand of friendship. and conciliation across the board. we hope and pray friends and other parties see this in conceding defeat goodluck jonathan was the first president to peacefully hand over power to a contender. muhammadu buhari received 54 million votes, winning with 54% of the 28 million valid ballots cast. as goodluck jonathan received 12.8 million, a little under 45%. enough to prevent a challenge. ynonne ndedge has more. >> reporter: he's the president-elect in the populous country. when we spoke to nicolas

madura hours after victory he appeared calm and relaxed. >> reporter: how does it feel to have won the election and how do you tackle nigeria's problems. >> i'll answer after i'm formally given the certificate. >> reporter: you know you are the winner how does it feel inside? >> fulfilled. >> reporter: you feel fulfilled? >> yes. >> reporter: in many places muhammadu buhari's supporters celebrated the first time history a government wins the election. >> we are happy bus we win the election. he has won now. we are happy. everybody vote.

we are very happy. >> he has been part of the masses. he knows our problem. he is one of us. he knows what the people want. we don't have roads, lights jobs. the youth are jobless. there's insecurity and i belief with his experience and with the team he's coming on to hold positions in this country, this will change and change has come. conceding defeat outgoing president goodluck jonathan called for unity and stability. >> i promised the country free elections. i kept my word. i expanded for nigerians to take part in this democratic process. that is one leg ate i would like to see and deal. >> reporter: but for muhammadu buhari the hard work of government begins his priority

is to fight endemic corruption that blighted the country. he promised to deal with injuredy in the north, high employment and power shortages. >> the former power will not take place until the end of may. nigerians will have to wait for the delivery of what muhammadu buhari promised. >> reporter: at least 23 workers at a dairy factory in yemen have been killed by an air strike. it happened in a seaport. a week since the start of a saudi-led air offensive of the president. the factory was located in the army camp. he has beening the houthis in their fight. >> air strikes tart houthi positions in southern yemen.

saudi officers say the houthis, and forces loyal to ali abdullah saleh are advancing to capture the seaport city of aden. forces loyal to abd-rabbu mansour hadi play a crucial role. they provide intelligence on houthi fighters seeing here trying to set up a point on the outskirts of aden. moments later the check point is hit. armed vehicles tanks, missile launchers are struck. there is a houthi presence. we have intensified attacks. fighters peel the heat. they are desperate to get into the cities to talk over. >> the military campaign takes time accusing iran of helping

the houthis destabilize the region. >> translation: iran and hezbollah train houthis, if they are present in yemen, they'll meet the same fate as the houthis. we will not allow anyone to provide pressure through the air and the sea. the kingdom is rallying in support behind the military campaign. they will stop only if the houthis pull out from the cities they control, and recognise abd-rabbu mansour hadi as a legitimate leader. >> translation: we are not warmongers. when we feed the drums of war, we are ready. it is part of our national security. for the time being, air strikes continue across yemen, showing no signs of slowing down. the saudis will send troops into yemen in the another future united nations says at least

62 children have been killed in yemen in the past week. it's condemned the bombing of a refugee camp on monday, a violation of international law. 29 were killed the number is expected to rise. >> we have not identified who is responsible for the attack. whoever is responsible this is a violation of international law. as well as the hospitals that have been hit, they are under protected status and should not be hit. whichever forces are hitting them are under violation. all such attacks have to cease. >> talks on the nuclear future have to resume. diplomatic editor is in lausanne. talks have been taking place, no deal will be signed today, i

imagine? >> well no no. april fool's day. it's not a good omen for the talks. you know that the critics will hughes that. i am sure we'll here phrases about a fool's deal. they have been work on this for hours. they were here foreign ministers, until the early hours of the morning. a number are not around the table. sergey lavrov the russian foreign minister left the negotiations, and the french for instance has flown back to paris. talks are under way as we speak. in fact, a fresh meeting in the last half hour is underway between the p5+1. negotiating on behalf of the international community, and iran. and still some key sticking points although we believe they have reached broad areas of agreement. so it continues to go. now, without a deadline so perhaps something that was concentrating, not there any

more because they bust through the deadline. >> i wonder what needs to be overdom push it forward now. >> well there are the sticking points, i think that we talked about throughout the time that we have been here in lausanne over the last couple of weeks. we believe that it may include the lifting of sanctions on how they do that. research and development for the nuclear programme, the timeline of a deal. i don't think it's just those specifics - those sticking points that are the problem. in some ways it's what are they going to announce what will be written down in the deal. the u.s. wants a tightly written 2-3 page document with concrete facts and figures in it something it can take to congress and say look what we somewhere achieved you don't need to put actions on iran we are making protection. iran on the other side wants to keep the negotiations going until the final deadline at the

end of june and wants to keep as much until the deadline until it can see the further deadlines. as well as the specifics, the broader issue of what will by publicised is one of the problems. >> thank you for that the iraqi interior minister says most of tikrit has been liberated as security forces battle i.s.i.l. the final push could be completed within hours. the provincial headquarters is under its control says the army. firing into i.s.i.l. held pockets of tikrit. security forces make an advance on the city. progress is slow. soldiers base booby straps --

booby traps. a number of symbolic buildings. >> yesterday government officers were taken from the south. they are advancing to the center. >> fanning out into the suburbs. soldiers pinpoint a home believed to be an i.s.i.l. hideout. inside improvised explosive defaces. >> translation: thank god we took them by surprise and the iraqi forces managed to deal heavy blows. ground forces liberated the land with the blood of iraqis iraqis alone. the prime minister says i.s.i.l.

fighters still have many cities. as the iraqi advance continues, shia militias return to their aid. iranian-backed fighters claimed part of the city. direct cooperation is a step too far for washington and tehran victory would boost hopes for mosul. u.s.-led air strikes in the de facto capital can only do so much before ground troops are needed coming up in the programme - arrests in turkey after a prosecutor is killed during an armed siege. the u.s. case it is lifting a ban on military aids for one of its allies in the middle east.

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catch up on what happened overnight with a full morning brief. get a first hand look with in-depth reports and investigations. start weekday mornings with al jazeera america. open your eyes to a world in motion. a reminder of the top stories an al jazeera. nigerian opposition leader and former military ruler has defeated incumbent president goodluck jonathan. muhammadu buhari received 54% of 28 million valid ballots. goodluck jonathan stored a little under 45%. talks on iran's nuclear future continued. diplomats say they are making progress. some key issues need to be resolved. 23 have been killed in yemen after an our strike hit a dairy

factor. a week long air offensive is targetting houthi rebels who ousted the president. >> palestine is a member of the international criminal court, part of a move by the palestinians to put more international pressure on israel. joining me now is al jazeera's jonah hull. what do the palestinians hope to achieve by joining the i.c.c.? >> just a few minutes ago i spoke to the palestinian foreign minister existing the building behind me the international criminal court after a procedure during which he was handed a copy of the rome statutes that report palestine becoming a third member state, bringing them a step closer to justice. he accepted that it could take a long time for that to happen.

there's a preliminary investigation under way by prosecutors. an investigation into whether there are circumstances in israel that may permit a more formal investigation to be laufferentd. that would have to -- launched. that would to happen. they may look at israel's settlement building in the west bank in land occupied by israel considered illegal. and the activities of its army and soldiers last summer during that war. it will be for the chief prosecutor to decide how things will proceed. there's no time limits at all for her to have to do that. keep in mind the enormous politicization of any case with powers on both side trying to influence the out come. the court would want to be certain of itself before making moves, and that certainty will

take time possibly years. >> you wonder about the chances of a prosecution brought before the i.c.c. are. well there's a chance now. the mechanism is in place. there are big obstacles, israel is not a member of the court. it is not obliged to operate. they can be tried for crimes on palestinian land. what are the boundaries and recognised by who. the court will only look at cases not vetted by another competent authority. israel investigates the activities of its soldiers. a big problem is palestinian war crimes. binyamin netanyahu released a report. the palestinian authority in joining the court, lauftenling

action that could impact on israel and the piece process could expose palestinians to liabilitiy as well. >> thank you jonah hull turkish authorities arrested 19 a day after a hostage siege in istanbul. they suspected of belonging to the leftist group accused of taking a prosecutor hostage. they tied after the shoot-out. we have this report. >> reporter: gun fire from a sixth floor office in the main criminal court. police special forces stormed the room where a prosecutor was being held at gunpoint by two armed men from a banned marxist group. the gunmen were killed in the shoot out. the prosecutor critically injured was rushed to hospital. doctors were unable to save him. >> translation: we as the state

do not see the attack as only targetting our trr. -- prosecutor. at the same time office aimed at turk your boar okay rahsy -- turkey's bureaucracy. >> the prosecutor was investigating the death of berkin elvan, hit by a tear gas cannister in 2013. his parents say the investigation into his death was too slow. the hostage takers wanted the prosecutor to reveal the names of the police officers suspected of firing the tear gas. >> we learn that actions were in connection to the berkin elvan situation. he was our son, brother. his death saddened all of us. >> reporter: central to this is how the armed gunmen were able to get their weapons into the house. al jazeera was told that

everywhere going in to the court was searched except the parents. berkin elvan's parents call on the gunmen not to kill the prosecutor. blood cannot be watched away with blood, they said. >> in argentina, what began as a transportation strike grew into nationwide protests. workers launched a strike on tuesday bringing much of the city to a halt. train services were suspended. unions are demanding lower taxes, higher pensions and measures to fight inflation. the u.s. lifted a ban on military aid to egypt for what it says are national security reasons. president obama released assistance withheld from egypt after the ousting of mohamed mursi. m in addition the white house is asking congress to approve

1.3 billion in aid. egypt says it needs the help to deal with conflict in the sinead peninsula and neighbouring peninsula. rosalind jordan has more. >> the u.s. inspected delivery of certain military equipment to egypt in 2013, after the military's decision to obvious throw the president, mohamed mursi. even though the u.s. government is not considering what happened two years ago a coup. it's showing its disapproval for the way it happened and by doing so it is showing pressure as it were on the new government in cairo. what the u.s. is going is saying on national security ground the military can get its hands to 125 kids improve the capabilities of the tanker

arsenal. the u.s. is cutting off open-ended spending of spigot where the egyptian military could buy equipment from u.s. contracts. the u.s. can have more say over what sorts of equipment the government can by equipment that will help the u.s. further its own national security aims. former india's prime minister singh will not have to deal before a court. his summons has been suspended. labelling breach of trust, and criminal conspiracy in the coal licences whilst in office. he denied wrongdoing. he was prime minister from 2004 to 2014 thousands of workers at a vietnamese foot wear factory are on strike. the taiwanese factories.

the workers are protesting against a social insurance law limiting the benefits if they leave their job. labour unrests is in communist ruled vietnam two australians on death row in indonesia for heroin smuggling will hear the results of their court appearance in five days. myuran sukamaran and andrew chan were convicted as part of the blin -- bali nine group of heroin smugglers. australia has repeatedly pleaded for their lives to be spared. in the u.s. indiana's freedom of religion act has been protested against. they want to film the way of the law is perceived. jonathan betz reports. >> reporter: with business owners right-hand indiana taking a stand and anger grow the

governor offered a new message. >> we have a perception problem. some have a different view. we intend to correct that. >> reporter: after repeatedly depending the religious freedom restoration act, the governor conceded the law should be changed. legislation that is added to the religious freedom restoration act in india, making it clear that the law does not give the right to deny services. it left some unsatisfied. it's not enough. you know i think that he needs to protect l.g.b.t. as a class of people. and, you know i think he's trying to save face at this point. critics want the law repealed. sexual orientation added as a protective class. something resisted saying it protects religious liberties

similar to other laws. opponents say indiana's goes further, protecting businesses not just individuals, it could allow stores to refuse to serve gay people. >> it flies in the face of values of people across the country, strongly support. >> reporter: the governor hopes changing the law will calm the anger. businesses are threatening to pull out. conventions cancelled and new york joining connecticut and washington in banning indiana. >> indiana's brand has taken a hit. it's been a highly visible backlash. >> a hit worth delivering. she owns a store, she hopes the boycott stand for now. >> me worrying about the bottom line is not as important. it can help bring about the

change maybe that's what is needed surviving in extreme environments is a focus of a new exhibit at the american museum of natural history. it's called life at the limits. kristen saloomey reports. >> reporter: they may hold their breath for up to two hours, eat 10 times their own weight or punch prey with the force of a speeding bullet. they are the amazing creatures on display in a new exhibit called life at the limits. >> we call them superheroes with superpowers, because they live in unimaginable inhospitable locations. too hot, too cold no light. unbelievable circumstances. yet they manage to survive. >> sometimes it's their scent that allows them to survive.

>> that smells like rotten egg. >> the foul stench attracts flies that it needs for pollination. >> we learn about science, not this stuff. this stuff people go out. that's cool. >> reporter: all living organisms face challenges when it comes to finding food a mate or surviving in hostile environments. the creatures in this exhibit survive in the extreme. like the 25rdy gray who has been known to come back to life after being frozen boiled or sent into space. no wonder the creatures can be found all over the earth. >> they are everywhere arctic ant arctic dry, wept and in the mosses and local streams or anywhere. >> we may never notice if not for the work of the american national history museum and 200

research scientists bringing the spees yeas toot -- species together. >> i like it. remember, keep up to date. the address aljazeera.com. azeera.com. the u.s. delegation said there has been enough progress to keep on talking even if they could not get to an agreement by tonight. with skeptics doubting iran can be trusted to keep it's and of the deal we'll talk to a weapons inspector about the fine art of looking over nuclear scientists shoulders. and the then the tough part.