this is bbc news — the headlines. the us secretary of state mike pompeo has said that if north korea agreed to denuclearise and took hold action, america would work to help bring prosperity to the country. mr pompeo said he had asked the north korean leader kimjong—un to commit to a robust international verification programme. the british prime minister theresa may has spoken over replica art, replica popstar and a robot that we wish a roomful of reubens at prague's national gallery. even the untrained eye can tell

the work of a master but it's not always easy. recent forgery scandals have got the art world in a spin. the question is, up close and personal, could you spot the impostor? the national gallery up there has a team of people whose job it is to make sure the works on display are the real deal. all the big art institutions do, but it doesn't always work. some of the world's greatest galleries have been caught out by the forgers. can technology help? here in prague, they are using space industry tech to see if they can spot a fake. this prague start—up has got a challenge to you — which ones are the fakes? this, for example, looks like an edvard munch. if so, conservative jiri is handling millions of pounds. the truth will be revealed when it goes in the scanner. on this side, we have an x—ray tube which emits x—rays. it's not emitting? it's switched off. but on the other side, supersensitive detectors first developed at cern, the world's largest particle physics lab. it's a new generation of x—ray imaging detectors which allow also measuring also wavelengths

of x—rays, so in way we can create coloured x—ray images. those colours can reveal layers and even ingredients of paint, sometimes ingredients way too modern for the alleged artist. we can also distinguish different materials which may or may not be from the period the painting is supposed to be from. and with robotic arms, they are hoping to scan just more than paintings. sculptures, pottery, even entire pieces of furniture. what about that edvard munch? after a few hours scanning, the moment of truth. the x—rays have revealed a hidden secret. hang on, do you see... what do you see? that is a vase of flowers, isn't it? munch rarely did flowers and the scans show titanium in the paint. munch didn't use that. so whoever‘s got this, hasn't got an edvard munch on their hands. have you told him, does he know? yeah.

butjiri thinks he has found a genuine work and it's potentially a very, very big deal. this looks like a vincent van gogh landscape. it's from a private collection. you are seeing it for first time. and the scan reveals a vital piece of evidence. there is the head, the shoulders, the hands and legs here. it's an unfinished female mood of exactly the type van gogh painted. the artist was so poor, he frequently reused canvasses. jiri thinks it's the real deal, and it is a big moment. it was crazy feeling. when i seen it, i can believe it. because in your life, as a restorator, it is a really special moment. the scans, along with years worth of other evidence, will be sent to the vincent van gogh foundation. if they decide it is real, it will be only one of two full—sized van gogh paintings discovered in the last 80 years.

the last one sold for almost £40 million. insight art scanning is just one of a battery of high—tech methods authenticating art. mobile apps can be used to track pictures around the world. artificial intelligence can be used to compare individual brush strokes. high frequency scanning can reveal minute imperfections. all in an effort to keep ahead of the forgers. speaking of whom, welcome to david henty‘s house. there is a walter sickert in the spare room. a caravaggio at the end of the bed. 0h, a francis bacon. and out on the balcony... let's look what you got out here. several paintings here. but none of these are actually real? they are all fake? again, depends who's asking. there is only probably1 or 2% in the world that can afford a $100 million picasso so if you want a picasso, the way i look at it,

this is the nearest you are going to get to it, is a david henty picasso. before he was exposed by a national newspaper, david sold his forgeries but carefully stopped short of claiming they were definitely the real deal. when i was forging, i've seen my paintings at the art auction catalogues. i wouldn't like to say which ones because it'd get someone into trouble. not me, because i sell them legally. now he has gone straight, his buyers know they are getting a forgery, albeit a lovingly crafted one. and anti—forgery tech is all part of the fun for fakers. as soon as you come up with a bit of technology, we are looking at a way to get around it, which is what a good forger will do. according to one former fbi art investigator, the forgery market is worth $6 billion. and with skills like david's on display, the art world might want to turn to the latest tech before signing off on that multimillion—pound deal. and that was geoff.

next week is mental health awareness week in the uk. of course the problems it is highlighting is of international releva nce. as mental health continues to grab the headlines, we have sent paul carter to have a look at some of the latest digital tools that aim to help. when i first started to cut myself, it was just a release and it was like i was in control of something and, like, it was like i was matching the pain on the inside as it was on the outside. there is still a lot of stigma around mental health and people feeling like they have got to be 0k and get on with it. i've struggled from anxiety for quite a few years, since i was a small child, because of issues that have faced at school. if you address that now at school level and at the younger years, then hopefully that will build a generation of people who are open to talk about mental health.

and that conversation around mental health could indeed be aided by technology. often seen as the bogeyman harming children and young people, there is a suggestion that technology could now posed a solution to those very problems. it is estimated that one in four adults experience mental health issues each year in the uk and that 75% of mental illnesses start before a child reaches their 18th birthday. treatment, though, can be slow. at present, only 20% of children and young people who have significant mental health problems that would benefit from intervention are actually receiving the sort of standard services that we recognise. we really need to think about how we can reach that additional 80%. one group of young people who may face particular challenges around mental health students.

here at the university of western england in bristol to have partnered with a platform called kooth to provide a service of young people who study here. it offers online forums, self—help materials and tools and live one—on—one counselling sessions. one student who wanted to remain anonymous found the pilot interesting and helpful. i struggled with low mood and anxiety and self harming in the past and that was all going on when i started university and i wasn't sure how i could build any therapeutic relationship with someone who i have never met. but it surprised me that i actually have. being able to write it down is a lot easier because sometimes i find it difficult to say what i am feeling and ifind it easier to put it into words. there are many tools and platforms out there to try and help young people at an early stage and the anonymity of online is often a big plus.

these students found using a bot app a great help. althouth users can go to on—line counsellors, 99% of users is via an ai chatbot. there were also mindful exercises and interactivejournals which help build emotional resilience. a lot of people feel like if they are talking to a person then this is like a major problem where if it's a bot, they can just talk and talk and talk and it doesn't have too much of an effect. you still get the support that has been put in place by people people who are professionals but you don't feel like you are sat there being judged by someone who is listening to what you are saying. it has that i can just go a long day by day, having those little moments just to myself when i can go to the bot and just have that little bit of downtime. 17—year—old courtney from greater manchester started having problems

after her parents split up, she found moderated chats and online tool through the big white wall a great help. i was really scared at first. like i didn't want other people to know and didn't know what was going to happen and i thought i would bejudged because of it but i'm glad i got help. group help with several people in it but you can have a personal one, which is you and another person, you can have conversations with other people about like things that they have gone through and you can find out their experiences. it isjust something that allows people to get the help that they need as soon as they need it instead of having to sit and wait. without that, i know that i would be, like, really, really stressed and struggling to cope with the pending exams. stopped myself harming, giving me like different techniques. digital technology has the potential to be hugely beneficial in reaching children and young people with milder conditions who can take up the benefits of self— management and particularly at an early point in their experience of the mental health problem. we all know that the nhs isn't as giving as it would like to be

which means that young people could suffer without technology like this. that's it for the short version. but it from the future starts here, spencer will be back next week. but in the meantime you can find out what we have been up to on facebook and twitter and bbc click. but for now, thank you for watching. hello, and welcome to newswatch, with me, samir ahmed. as iran hits the headlines, we find out why bbc persian journalists have been targeted by the authorities in tehran. we have breaking news of a serious incident between russia and... and how hoaxes are hijacking bbc branding, to circulate fake news online. first, the local elections in england last week provided an incomplete and complicated

picture of electoral support, but the verdict from bbc news seemed pretty clear. a disappointing night for labour in the local elections in england, as the party makes limited gains and doesn't win some of its key councils. jeremy corbyn‘s party took plymouth from the conservatives, but failed to win any of its target councils in london, and lost nuneaton and bedworth. the conservatives celebrated london as the party held onto their flagship boroughs, but lose trafford, their only council in greater manchester. theresa may said overall it was a good night. it's hard to detect trends in local elections, because not all seats are up for grabs, and gains and losses have to be weighed against the last time they were contested, and the state of the parties then. success or failure also relate of course to expectations,

but did bbc news raise or at least amplify expectations for the labour party, and then judge their performance a failure for not living up to them? some viewers certainly thought so, with rose doyle writing... the tory party lost positions, despite ukip dramatically falling away, yet the bbc report this as a bad night for labour, and "mixed results. "