welcome to bbc news, broadcasting to viewers in north america and around the globe. i'm duncan golestani. our top stories: a huge rally for turkey's president consolidating power a year after the attempted coup. tony blair says britain could win concessions on immigration and stay in the european union. thousands march through hong kong to mark the death of chinese dissident and nobel peace prize winner, liu xiaobo. turkey's president, recep tayyip erdogan, has addressed a mass rally to mark a year since the failed military coup. tens of thousands watched him speak at a bridge in istanbul, where 3a people died in a battle with renegade troops. president erdogan said the defeat of the plot

was a victory for democracy. he told the crowds that the suspects on trial should wear orange jump suits, like those worn by guantanamo bay detainees. mark lowen reports. they returned to where the nightmare began. seized by the tanks a year ago, it is now renamed 15 july martyrs bridge, tens of thousands celebrating victory today. they call it turkey's second independence, joy and relief clear, and they remembered the 260 killed as the people stood up to the plotters, known as feto. last year, a lion, that lion is turkish nation, was tried to strangle, by cats. who are those cats? they are militants with tanks, f—16s, bullets, rifles. but they couldn't strangle the lion. it was the greatest ever attack on the turkish state, rogue soldiers bombing buildings, blocking roads, and driving tanks into civilians.

by dawn, it had failed. then came the purge, 50,000 arrested, and 150,000 sacked or suspended. a year ago, there was unity against the coup, but tonight the opposition says it is not coming here. deep cracks have opened up over the mass arrests and dismissals. for half the country, the 15th of july marks turkey's rebirth. the other half says it is killing off what is left of turkish democracy. as night fell, their hero arrived. he was almost captured in the coup, but president erdogan emerged stronger, and tightened his grip. translation: i would like to thank all our citizens who protected and defended their freedom, democracy, religion, state, government, and future and independence. i thank each and every individual member of our nation.

elsewhere, they are fighting back against the purge, protests in support of two academics on hunger strike for four months, since they were fired. alongside, a human rights monument is now sealed off, a bleak metaphor for turkey's plight. translation: one day your name is on a list, and you're struck off. your life is turned upside down. you're killed off by the system. they want to live, but for their demands to be met. i can't think of any alternative. the celebrations went on alongside the new martyrs monument, the 15th of july now etched into the country, for better or worse. a year since the national trauma, and turkey still torn. tony blair has suggested the uk could win concessions on immigration to try to keep it within the european union. the former british prime minister said european leaders might be

prepared to offer a compromise on the free movement of people. his comments, though, have been dismissed by senior british conservative and opposition labour figures. 0ur political correspondent, eleanor garnier, reports. balancing the needs of the uk economy at the same time as getting greater control of britain's borders is a key issue in the brexit debate. but the former labour prime minister has suggested political change in france has opened the path to compromise. tony blair claims the eu could be willing to make concessions on the free movement of people, to allow the uk to stay in a reformed eu. britain benefits enormously from that freedom of movement. however, the question is whether there are changes, qualifications to it, not alteration of the indivisibility of the principle, but qualifications to it around the things that concern people. but those claims directly contradict what those in brussels are saying, that the uk must accept

free movement, without exception or nuance. i'm not going to disclose conversations i had within europe, but i'm not saying this simply on the basis of a whim. some of those who campaigned to leave the eu says there is no evidence to back up mr blair's claim. the eu itself has made it absolutely clear that the four freedoms, including freedom of movement, are indivisible, as they've called it. the chief negotiator, barnier, has said that. they took four minutes to agree those guidelines. there is no debate in the eu. it's complete nonsense, it's just another attempt to undermine brexit. campaigning in southampton, the current labour leader rejected his predecessor's position, and says his party respects the result of the referendum. anyone is entitled to give their views, and i listen to all of them. the views we have is that we want to see tariff—free access to the european market, protection of eu nationals, and protection of the labour rights and environmental conditions and consumer rights we achieved through european union membership. this latest intervention

from tony blair will not change the government's approach to negotiations. ministers say the former labour prime minister is demonstrating again that he is out of touch with voters. but mr blair has reopened the debate on the central issue of brexit, a decision he says is the biggest the country has faced since the second world war. once, he helped determine britain's place in the world. now, this former prime minister must settle with commenting from the sidelines. eleanor garnier, bbc news. thousands of people have marched through the streets of hong kong, following the burial at sea of the chinese nobel peace prize winner, liu xiaobao. the largely silent crowd walked to china's representative office to show their support for mr liu, who died in hospital on thursday, while serving an 11—year prison sentence for his political activism. here's michael bristow. let's take a look at some

of the other stories making the news. at least eight people are thought to have been killed in a stampede that broke out after a football match in the senegalese capital, dakar. fans of two local teams clashed after a game at the demba diop stadium. police responded by using tear gas, leading to panic. a wall collapsed as a large number of people attempted to leave the stadium. dozens of people are reported to have been injured. israel says it will look at the holy site on sunday. it was closed off after two police officers were killed by gunmen who themselves were killed. stay with us here on bbc news. still to come. one of the leading investors in artificial intelligence tells american politicians they should be really concerned about the future of the technology he's pioneering.

here, a 15—year—old girl has died after suffering an adverse reaction to a psychoactive substance, commonly referred to as a "legal high." the teenager was found unconscious in the early hours of this morning in a park in newton abbot in devon. she later died in hospital. two other girls were also taken to hospital as a precaution. it's important for me to make sure that people do not misuse the term "legal highs," which has been often talked about. it tends to give it some sort of legitimacy. these are all illegal drugs, and in fact they are very dangerous, because we don't know what goes into making them. time and time again we hear, locally, regionally, nationally, people pay a big price for this. it is not worth experimenting with your life. one of two teenagers arrested by police after a series of acid attacks in north london has been charged with 15 offences. among the charges the 16—year—old faces are five counts of grievous bodily harm with intent, three counts of robbery and four of attempted robbery.

he'll appear in court on monday. the second teenager has been released on bail. the technology entrepreneur elon musk has warned the development of artificial intelligence has become the greatest risk faced by human civilisation. he made the comments at a gathering of us lawmakers, arguing that politicians should start taking the threat seriously. greg dawson reports. he's hardly a man you could accuse of being afraid of technology. in future, elon musk wants to develop rockets to send people to mars. in the present, he is pioneering driverless cars. but at a gathering of us state governors, he talked about fears of a time when machines outsmart the humans who control them. i think people should be really concerned about it. i don't want to sound the alarm bell, but people might see robots going down the street and killing people, they don't know how to react

because it seems so surreal. i think we should be really concerned about artificial intelligence. for decades, the idea of robots threatening human life has belonged to the realm of science fiction. but elon musk says it is highly likely to evolve into science fact. robots will be able to do everything better than us. i'm including, i mean, all of us. yeah... i'm not sure exactly what to do about this. i am sofia. anything else? i'm a robot. a glimpse into the future was showcased at a technology conference in hong kong, with models that talk and even sing. disturbing? maybe.

but not threatening. elon musk admits he does not have the answer to keep mankind safe, but said it should start with lawmakers proactively regulating artificial intelligence before it's too late. greg dawson, bbc news. tributes have been made to the world—renowned iranian mathematician, maryam mirzakhani, who has died of cancer in the united states. the ao—year—old was the first woman to win the prestigious fields medal, regarded as the equivalent of the nobel prize for mathematics. while there's been much praise for her work, there's been some anger on social media at the way official media outlets have avoided showing images of her unveiled, as she chose to dress in the west. caroline series, emeritus professor of mathematics at warwick university in england, was a friend and colleague. it is just absolutely tragic news.

we had known that she was ill for a long time, but it is just terrible. she was a completely brilliant and outstanding mathematician. the fact that she was iranian and the fact that she was first woman to win this prestigious fields medal, she was just such an icon and a role model and inspiration around the world. she will be sorely missed. it was the way in which she managed to combine ideas that, perhaps, other people knew, but she combined them together in a completely unexpected and remarkable way. she sent me a copy, a draft of her thesis and ph.d dissertation before it was finally submitted and the way she put together ideas which, really, i had known about but she was able to combine things and draw astonishing and remarkable conclusions with them. quite cleanly and... not simply, it is technical, but, somehow, to get to some goal that would be completely unexpected and turn around the way you would think about the whole subject.

rather hard to explain how or why, but somebody mentioned the words artistry in mathematics, and that is what she showed us all, in a very, very high degree. president erdogan of turkey has told thousands of supporters who gathered for the anniversary of a failed coup that the plotters should have no mercy. and tony blair said that britain could stay in the eu if the eu gives compromises on immigration. let's get more now on the first anniversary of last year's attempted

coup in turkey. earlier, we spoke to bbc journalist seref isler, who was in turkey at the time. we asked him what he made of president erdogan's speech. well, i mean, i have been a journalist for as long as he has been in power, and i have to say that this was easily one of the most religious, one of the most emotional speeches that he has ever made. the rhetoric was very strong, so using phrases such as these traitors, we'll have to jump over the pawns, that we need to chop off their heads, we want execution, bringing back the death penalty, and then him saying that if this... it is a democracy in turkey, so if parliament were to pass a law bringing back the death penalty, that i will approve it, was another phrase he said. and it was other things like, again, stomping on their heads. about half of his speech was basically taking on the leader of the opposition, kemal kilicdaroglu of the republican people's party. so the rhetoric was very strong and very passionate, very emotional.

in a way, it appealed to the emotions of the people on the streets, and who came to the rally, who would have felt this nationalistic surge starting from a year ago today. like that thousands of people have been taking part in demonstrations in mali's capital bamako. it's against proposed changes to the constitution. the campaign against the changes is being led by opposition parties and civil society groups. some believe the proposed reforms give too much power to the president. others say it is impossible to hold a credible referendum whilejihadist insurgent groups control territory in the north of the country. much has been made of the human contribution to climate change in recent years, but livestock is also a major factor in global warming. it's all to do, of course, with the methane gas the animals emit as they digest their food.

now smallholders in kenya are getting together to try to combat the problem, and there mightjust be benefits for big business as well. the bbc‘s richard kenny went to one farm in western kenya to see how it works. christine's farm only has five cows, but it is part of a new battle against global warming, because cows are a major contributor to climate change. by using a few simple techniques to change the way she farms, christine has drastically cut her cow's methane emissions. the techniques have been taught by a swedish development organisation. to have happy cows, they need good feed,

and these type of grasses, together with several other kinds of fodders, is to ensure that her cows get a balanced diet, as opposed to how cows roaming out on the roadside, trying to get something to eat. giving good quality feeds to the cows, that they can easily digest, they are able to produce more milk. and, at the end of the day, we have happier, healthier cows. i make sure my cow is clean. christine used to get one or two litres of milk per day. now, she is getting over five litres a day. as a result, christine will need fewer cows, and fewer cows means less methane. by feeding the cows better, you are reducing the methane situation.

you are reducing the destruction that a large herd would cause by overgrazing on the vegetation. the work is funded by european company danone. it gets them carbon credits that offset their own pollution. danone also part own the dairy where christine sells milk, too, so they win. how about christine? i save my money. my children are learning, going to school, and i canjust decide today to go and buy a dress, and i go. what we do in our own little way has an impact. it is what christine is doing, it is what the 30,000 farmers in this project are doing, and together we can have a global impact. it has been a busy day for sport.

verbena muguruza has won in a tightly fought final against venus williams. she denied the 37—year—old american the first major title for nine years which would have made her the oldest female grandslam champion in the open era. she is delighted to see her name inscribed with those of the other champions. it was amazing. i always, like i said before, i looked at the wall and see all the names and the history and i lost that final, on the one i was close to let this did not want to lose this time because i know the difference. i really know the different between making a final, which is incredible. but so happy that it is there now. she played really well.

she played top tennis and i have to give her credit for it. she displayed better match but we had a great two weeks and i'm looking forward to the summer. there is always something to learn from matches that you win and the ones that you don't win. there is something for me to learn from this. at the same time, looking back, it is always about looking forward as well. on sunday, roger federer will aim to win a record eighth men's singles title wimbledon. marin cilic stands in his way although the croatian has only won one of his last seven meetings with roger federer. it makes me really happy, marking history here wimbledon. it's a big deal. i love this tournament. all my dreams came true here as a player. so to have another chance to go for number eight now and be so close at this is a great feeling and, um, yeah. unbelievably excited and i hope i can play one more good match. 11 finals, all these

records, it is great. it does not give me the title quite yet. that is why i came here this year. so close now so ijust need to stay focused. cricket next and a busy day, not least in nottingham where it has been day two of the second test. something of a collapse for the host in the afternoon. they were 205 all out losing their last seven wickets for 62 runs, replying to south africa's first—innings score. the tourists ended on 75 — one to lead by 201. in colombo, sri lanka trails zimbabwe in a 1—off test in which craig irwin excelled. sri lanka closed on 293 — seven in theirfirst innings. the women's world cup, india defeated new zealand's reach the semifinals.

186 runs was the difference in their match as india skittled new zealand out for just 79 runs. raj made 109 for india and they will now play australia while england take on south africa. stage 1a of the tour de france was won by the australian michael matthews. it was a sprint to the line, the australian taking ahead of other riders. the british rider, chris froome regained the yellow jersey. his lead 19 seconds with six stages remaining. lewis hamilton will start the british grand prix from pole position. he was fastest in qualifying by over half a second in the light the crowd at silverstone. he equalled the record of five polls at this rate. his rival, sebastien

beddall, was third before i go, time to tell you about the english premier league's chelsea who have completed the signing of a french playerfrom monaco. he joins chelsea on a five—year contract for a reported fee of over $50 million. staying with sport — well sort of. there's been quite the race taking place in china — but if you were a participant — you might need a good clean up afterwards — as the bbc‘s tim allman explains. # mud, mud, glorious mud... in shanghai, this is one way to get down and dirty, literally. the city's annual mud run. you can crawl through it, jump into it, even go for a swim in the stuff.

the possibilities are endless, but hardly spotless. translation: just like the slogan of our race, "i dare," i hope the race can bring experience beyond other normal races. when they are facing challenges such as mud and obstacles, they dare to step forward. during the race they can show their abilities, and help their team—mates around them. more than 4,000 people taking part, facing 26 obstacles. some are harder than others. but it seems like a popular, albeit rather mucky, event. translation: i feel great rolling in mud. i feel tired, but after living in a city for a long time, i had no time tojoin a race like this. it is exciting to do things

you have never tried before. it is really fun. and this is not a one—off. there are more races still to come, later this year, more chances to wallow in glorious mud. this is an art gallery showing a series of sculptures. keep an eye on the two women on the right of the screen. they are taking photos and all goes well until one of them tries to crouch down to take a selfie. just look at those plinths going like dominos. a spokesman for the gallery said the damage caused was in the region of $200,000. ouch. you can get in touch with me

and the team on twitter. stay with us and the team on twitter. stay with us here on bbc world news that it hello there. if saturday was a little bit cloudy for your liking, well, most places can expect something a little brighter during sunday. the skies actually started to brighten in one or two spots on saturday afternoon and evening. that was the sunset in cambridgeshire. and a little earlier in the day, where we saw cloud breaking up a little bit through the the likes of the midlands and northern ireland, temperatures lifted very readily, up to 2a or 25 degrees because of the wedge of warm, humid air that was sitting in place. now, fast—forward to the start of sunday morning, that wedge of warm air is confined to the southern half of the country, where it will be quite cloudy, misty, murky and drizzly in places. a very, very warm start to the day indeed, but something cooler and fresher for northern ireland and for scotland. that will be, though, where we see the best of the sunshine during sunday morning. northern ireland, scotland, quite a lot of sunshine, although very blustery winds for northern scotland,

perhaps gales in exposed spots, bringing showers into the mix. across the north of england, things will turn increasingly bright as our weather front, this cold front, slips further southward. along the line of the front and to the south of it, it's going to be quite a cloudy start to the day. quite misty, murky and drizzly for parts of wales and the south—west. cloudy too across east anglia and the south—east, but notice 20 degrees in london, even at 9:00am in the morning. anywhere to the south of the front, that is where we will have the warmest and the most humid conditions, but equally, the most cloud. having said that, the cloud will start to break up a little bit, particularly towards the south—east, and with the humid air that could lift temperatures to 26 or 27 degrees. further north and west, a lot of sunshine, a cooler, fresher feel, blustery showers across northern scotland. but what about wimbledon? well, it looks largely dry. things will brighten up a little bit as the day goes on. with that, the threat of a shower, perhaps a 30% chance of a light shower as the front moves its way through during the latter part of sunday. but through sunday night, into monday, the front clears away, and it allows this area of high

pressure to build its way in. that means a beautiful start to the week, if you like warm weather and sunshine, that is. there will be a lot of sunshine across the country, with some extra cloud close to the far south. easily 20—26 degrees, some spots could begin to get quite close to 30. and another very warm day to come on tuesday. most places dry with sunshine but notice down to the south. don't take this too literally, but there is an increasing chance that we will see thunderstorms spreading up from the south. there could be thunderstorms just about anywhere on wednesday. as they clear away, it will turn cooler and fresher for the end of the week. this is bbc news. the headlines: 0n the first anniversary of an attempted military coup in turkey, president erdogan has addressed tens of thousands of people at a rally in istanbul. he said there should be no mercy for the plotters and their supporters who should have their heads chopped off if parliament reinstates the death penalty. the former british prime minister,

tony blair, has suggested the uk could stay in the eu if other governments are prepared to compromise on immigration. however, the current leader of the opposition labour party, jeremy corbyn insisted that the result of last year's brexit referendum must be respected. thousands of people have marched through the streets of hong kong following the burial at sea of the jailed chinese nobel peace prize winner, liu xiaobo. the largely silent crowd walked to china's representative office in the territory to show their support for mr liu, who died on thursday. in the netherlands, and across europe, thousands