the country's terror threat assessment to the highest level following a bomb explosion on a rush—hour train in london. theresa may said security analysts had concluded that a further attack might be imminent, and there would be more armed police on the streets. the united nations security council has strongly condemned north korea for carrying out its latest missile test — calling it ‘highly provocative‘. but after an emergency meeting, the un said there would no further sanctions, for now. north korea fired a missile over japan for the second time this month. after twenty years in space, the cassini mission to the ringed planet saturn has come to a spectacular end. the probe had run out of fuel and the us space agency nasa had commanded it to destroy itself by plunging into the planet's atmosphere. gavin gray will be here at two o'clock. now on bbc news, it's time for click. this week, the technology helping

american schools to prepare for the worst. we are hands—on with the new iphone. and artificial intelligence meets its greatest challenge. in the 19805. (siren sounds) we have one party down. in the united states, mass shootings are something that occur with depressing regularity. libraries, churches, cinemas, and schools. all locations of acts of

mass murder. often perpetrated by one individual, with powerful military style weapons. in the last four years there have been more than 200 mass shootings in schools alone in the united states. the deadliest school shooting ever was in 2012 in sandy hook elementary school, where 20 children and six staff were murdered by a lone gunmen. it made headlines across the globe. and so to help prepare for the next time, authorities have turned to technology that is normally used in video games, to help train emergency ci’ews video games, to help train emergency crews and even teachers to be ready to respond. just a warning, you mightfind to respond. just a warning, you might find some of the images in this film distressing. at least one person has been shot... hundreds of people just person has been shot... hundreds of peoplejust running person has been shot... hundreds of people just running around... person has been shot... hundreds of

people just running around. . ij person has been shot... hundreds of peoplejust running around... i am frightened, and i know that my constituents of the most part are frightened. we have a weapon, he has shot... unfortunately these actors shooting situations, particularly in schools, are not going away any time $0011. schools, are not going away any time soon. you'll see in schools, they do more fire alarm drills than they do active shooter drills. that's changing now in some schools. the most changing now in some schools. the m ost rece nt changing now in some schools. the most recent school shooting in the us wasjust a most recent school shooting in the us was just a few days ago, in spokane, washington. a high school student died confronting this shooter. the department of homeland security is try to do something about these events. there have been about these events. there have been a lot of copycats that have necessitated first responders getting more prepared to respond to these kind of attacks. so it's created a simulation to help train first responders to what it calls "active shooter attacks". the

simulator is called the enhanced dynamic geo— social environment or edge is assured. it is a video game thatis edge is assured. it is a video game that is very similar to popular first person shooters. using a pc tea m first person shooters. using a pc team of first responders can work together to resolve active shooting incident in a hotel. fire teams put out blazers, paramedics treat the injured and cost deal with the bad quy- “ injured and cost deal with the bad guy. —— police. 0rlando injured and cost deal with the bad guy. —— police. orlando in florida isa hub guy. —— police. orlando in florida is a hub of serious simulation and training activity. teams here create an advanced simulations including using an —— animatronics to teach medicated deal with soldiers injured by ied ‘s. this facility as part of the army research labs. they are primarily concerned with building research and training. the military. it is the birthplace of the edge system which we can see three year. —— through here. designed in

conjunction with simulation specialists cole engineering, the research lab has used the unreal engine, to create its environments. 0ne engine, to create its environments. one of the reasons we connected with the department of homeland security is that we have a lot of experience in the simulation world. one thing that we have been moving towards is the use of game technology, to provide those capabilities that traditional simulations did in the past. time to try edge to myself. i can play as a firefighter or medic, but i would choose to play as a cop. to make the training is useful as possible, the act in shooter is played by a human being. this produces a number that will element that an artificial intelligence would find difficult to replicate. —— unpredictable element. this feels like an ordinary videogame rep graphically and the way it plays. actual first responders would play

this game, applying their real tactics and procedures to the situation. i can see the bad guy. i will fight fire with him now. i managed to take him down. while the hotel might feel like playing in a normal video game, the team here has been working on a new environment, one with far more chilling connotations. a school. when there isa connotations. a school. when there is a school shooting it is com pletely is a school shooting it is completely different than when there is other types of soft targets hit. and it's very different than a traditional, if you have an active shooter that at all or a theatre or someone shooter that at all or a theatre or someone like that. and new playable character has been introduced into the school environment. as well as cops, the player can take the role ofa cops, the player can take the role of a teacher. an active shooter eventin of a teacher. an active shooter event in a school, has it been discovered then that by the time more enforcement arrive, the event is over, that the shooter has killed

people in the school? that's correct. basically the teacher is almost the first line of defence for the students, to stay safe. so i have spawned in and i am a teacher ina have spawned in and i am a teacher in a classroom. here are my kids, i can definitely hear gunfire. i have a list of instructions that i can give to the kids, in this instance i think the safest thing to do is tell them to get out of the school completely. this class has windows. i have barricaded the door to the classroom, you i have barricaded the door to the classroom , you can i have barricaded the door to the classroom, you can see the shooter outside, he is shooting at the barricade, i have evacuated all of my pupils in the classroom. my class has survived, but the experience is an unpleasant one. this is definitely not feeling like i am playing a game. to my final experience with edge, i tried a role

of the person conducting the training. this means i have to play as the school shooter. we work with specialists in this, and we have also talk to people from sandy hook, we have studied incidents at multiple schools. if anything it seems really quite horrible, shooting innocent, at arm ‘s children. it really is quite an unpleasant experience. —— unarm. children. it really is quite an unpleasant experience. —— unarmlj have to admit this was very difficult work for us, most of us have children, and to dig deep and understand what type of stimulus teachers are going to get from an event like this, what are they going to see, what are they going to hear. i'm actually hoping that the cops turn up quite soon, to be brutally honest. can you bring the cops in? yeah. what has been the reaction from the world at large to the notion that an army research lab is building simulation software to assist law enforcement to deal with school shootings? honestly, it is mixed. we have some people who are

very concerned that if we have a scenario like this, it allows people to train to attack the school. the truth is, that's impossible. the scenario is complete in trolled —— com pletely scenario is complete in trolled —— completely controlled, so that only the people who administer the game can invite people into the scenario. homeland security is securely making the system available first responders, and soon teachers, for three top while 0rlando is home to the arl, it also knows the carnage they can be wrought by a lone gunmen. this is pulse, it was a gay nightclub. last year it was the sight of america's deadliest shooting. a lone gunmen armed with a pistol and an assault style rifle killed 49 people here. in the wake of the pulse shooting, florida state senator linda stewart tried to introduce a bill limiting the sale

of new assault style weapons and large capacity magazines. the bill did not pass. homeland security has commissioned this simulation software, which is to train first responders and law enforcement, in how to deal with active shooter situations. what you think about that bit of software? i think it's absolutely necessary. i think that the more hands—on, or the more information that people who are having to respond have, the better they will be able to respond in real—time. they will be able to respond in real-time. in the meantime homeland security is hoping to create more environments for edge, eventually building a generic town for virtual training. i don't think we can necessarily stop these events, but hopefully we can reduce the number or the severity of these attacks. hello, and welcome to the week in

tech. this was the week that apple launched a new phone 02, mohr later in the show. the two—year legal battle over the ownership of a monkey's selfie finally ended. long story short, it is not the monkeys photo. the department of homeland security in the us has ordered all departments to stop using software from kaspersky, after potential ties to russian intelligence services. the compa ny‘s founder to russian intelligence services. the company's founder has denied any connections, and says they co—operate with authorities are other well. sd printer structure has been shown that can fold itself up without the aid of heat or water. the team behind the structures believe it can be used to great printable robots. and speaking of robots, six month after its debut in california restaurant, an ai burger flipper has apparently done so well it will be rolled out to over 50

other fast food locations in the states. it uses cameras and sensors to see the world around it, and a p pa re ntly to see the world around it, and apparently cooks the perfect burger everytime. and of all thejobs apparently cooks the perfect burger everytime. and of all the jobs we thought robots would take, classical conductor was brewing time a list. however that is exactly what happened when this robot conducted andre bocelli and this orchestra. the robot can only repeat the movement of a maestro, and cannot respond to spontaneous tone or change in music. that it was onlyjust over ten years ago that stevejobs said this. that it was onlyjust over ten years ago that steve jobs said this. and ipod, iphone, and we are calling it iphone. the iphone did something no smartphone had done before. it

really brought the internet into our pockets with its high quality, big touchscreen, a good browser and that great idea of pinch and zoom. it kickstarted a new generation of smartphones. it defines the look that every other make—up smartphone still adheres to and in the process it made apple the most valuable company in the world. so when a new iphone arrives, world pays attention. we did too. david lee was there. say hello to apple park, or there. say hello to apple park, or the spaceship, several calls it. eventually, 12,000 people will work on this 175 acre site. it was designed by british architect norman foster and cost a reported $5 billion which makes it the most expensive building in america. their headquarters is in many respects the last great project from steve jobs. this was his final appearance in public before he died. 0ne

this was his final appearance in public before he died. one last launch not for a device, but for a building. so its curved all the way around. you know if you build things, this is not the cheapest way. there is not a straight piece of glass in this building. six years later i am among those piling into the steve jobs theatre, later i am among those piling into the stevejobs theatre, a purpose—built venue for the kind of product launches that he made his trademark. you wonder what he would have made of the latest iphone. new facial recognition software means you can unlock the device just by looking at it, a system that replaces the fingerprint sensor in previous iphones. after a bit of a mishap, apples craig federicchi got it working. and this might be the most ridiculous orfine it working. and this might be the most ridiculous or fine use of sophisticated technology ever. it's a happy punpy-

sophisticated technology ever. it's a happy puppy. check out the physics of the years. animated emojis track my facial expressions to power the emoji with different expressions. this makes me laugh. i can be this big and heavy smiles, it smiles, and it might raise my eyebrows and puff my cheeks, it does that. at $999 or £999, the iphone ten does not come cheap which is why apple is also bringing outan cheap which is why apple is also bringing out an iphone eight and eight plus, a more incremental upgrade on last year's models. and for the first time for an apple smartphone, it can be charged wirelessly, something samsung, it has to be said, has offered since 2015. the iphone eight plus's camera offers a way to artificially change the lighting on the picture which it does by using the two lenses on the back to digitally simulate different lighting conditions and the apple watch has been given a significant upgrade. it now has its own cellular

connection built—in which means you don't need to take your phone with you in orderfor the don't need to take your phone with you in order for the watch to work. it is sales of the iphone which have made apple the huge, huge company adheres and the new hq made apple the huge, huge company adheres and the new h0 is a permanent reminder of the company's enormous power. will the iphone ten continued success into another decade? apple seems confident but then again, they might be talking with a emoji. if you wonder what humanity would do it given access to the most advanced facial technology —— tracking technology available, you now have your answer. this coding school in paris has no teachers, no syllabus, no hours and no fees. so what does it have? ecole 42 was created in funded by a

french billionaire and entrepreneur xavier mille. he felt the french education system could do better so he created this paste —— this place for18— he created this paste —— this place for 18— and s0 —year—olds to study coding, and effectively teaching themselves. this was a concept he already launched in san francisco. it was a mix of several methods, what was done and implement it in the finnish educational system. it was very much searched and researched and it is a model that has been tested and implemented here. land in place on the course is the first challenge. 50,000 applicants get whittled down to sooo for what they call that the macro —— the la piscine state which doesn't involve swimming, but a metaphorical trial over whether they will sink or

swim. 0nly up to 900 will make the grade. on the first day, we don't tell them anything or give them anything. they have to figure out what to do, they have to go find a room, how to work. those taking part don't even know what they need to do to impress but they are aware that it's their peers assessing them. there is no lectures, essays. you don't quite know the information so it takes a lot of trial and error but it forces you to speak to your peers is that there is a lot of exercises and working with your colleagues. it is really a 2-way thing. it's notjust me asking them to help that's learning to all of my questions. i've seen some people who come here just for fun and funny is not why we are here, we are here to work and improve. it seems to be a friendly place. far more sociable than i expected. what are the main aims here is an educational meritocracy giving everyone no matter what their background and achievements to date equal opportunity and for that reason, a

place to sleep is available. while undertaking the course trials, some may just use it undertaking the course trials, some mayjust use it for a nap in the day but others could be stating there throughout the four weeks. a lot of the work happens between 2am and sam in the morning and the place is quite busy. for me, because i don't have a salary, it is good to stay in here. but for those who make it onto the full course, 80% gain employment while still studying with 100% getting jobs by the end. while still studying with 100% getting jobs by the endlj while still studying with 100% getting jobs by the end. i think the really special thing about the school is the ecosystem where everybody who comes here is super ambitious and super motivated and being surrounded by people who have that kind of mindset really pushes you to perform better in life. it's amazing what you can achieve when you teach yourself. and that's also true when a computer doing the learning. artificial intelligence

has been making great strides recently and some of it has involved something that would have been frowned on here. video games. but the truth is, games can actually be very educational. for us, but also for machines, because they are being used to train artificial intelligence is to solve problems. they are —— there are simpler veide environments are ideal. they have small sets of rules and commands, the scoring makes it easy to judge how well be ai has done and problems can be played out over and over again. different types of games can train and ai in different ways. for example, this is go, boardgame with simple rules but it has so many possible moves, even a computer cannot number crunch its way to victory. so google's alphago developed its own playing style in order to beat the human world

champion. but a platform game teaches a machine more about the physical world, about timing, how to move, how to prioritise different tasks. there is one platform game which strikes fear into the heart of many 80s gamers. and it is one that a group of students in california have decided to take on their own home—grown artificial intelligence. can walk ins went to meet them. —— can walk ins. walkaround, find a commodore, walk around, find the key, dyer, repeat. this is essentially what you do when you play montezuma's revenge and it can be very frustrating. please, no. montezuma's revenge is considered the hardest original atari game, in

pa rt the hardest original atari game, in part because there are so mini obstacles part because there are so mini o bsta cles to part because there are so mini obstacles to report it and so much you need to do before you get any high school. these three computing stu d e nts high school. these three computing students from stanford university we re students from stanford university were looking for a college project that our natural language processing course. when they heard google's deep mined project was trying to beat atari games using the ai system. intrigued, they tracked down squashy from 2015. the graph is impressive, you have games like breakout or pong where the agent is beating humans by a factor of 1000 but there is a game at the bottom with abare says 0% and we were curious about that, why is it doing so badly? 0%, means the ai got a score of zero matter how much are trained in that game is montezuma's revenge. we played it and we almost got close to 0%. it is a really hard game. but as enthusiastic students often do, they wanted a challenge.

google's deep mind scoring zero meant nothing. let's create a system that can beat the game from our door rooms, they said, so they did, building an agent which would follow simple human instructions in order to play the game. we can describe in english exactly what instructions we would give you. we can pretend you are the ai. we can pretend you are the ai. are the ai. we can pretend you are the al. the first thing we say is, don't die. that is brutal. which in all honesty, it is something it ta kes all honesty, it is something it takes the agent while to discover. did you actually say, don't die? yes, and it makes things better. so they trained at the ai yes, and it makes things better. so they trained at the al to follow human instructions, don't die, go left, jump across, for example. then they gave it a reward. the same way you might incentivise me to fold my laundry by telling me i would get $10 per doing it, we give the agent $10 per doing it, we give the agent $10 in its own currency for solving the task we ask you to do. that is

so often the case with al, it started to do its own thing. we thought were being clever by telling it to go down the ladder to start up again because that is the path to the key and that is what you need to win. the agent wants to follow the instruction but it also wants the key because the game gives it a bonus. and it can go down the ladder a little bit and then ignore our instructions and jump. we put our algorithm was broken. it points to one of my fears were artificial intelligence more generally. sometimes when we describe what we want, an agent can interpret it differently. and that can have devastating consequences if the actions are more serious than steps ina actions are more serious than steps in a videogame. what is exciting about this ai system is how the stu d e nts about this ai system is how the students envisage it being used out of the game world and in real world. whoever said playing games in university is a waste of time should really ta ke university is a waste of time should really take a look at what the stu d e nts really take a look at what the students are achieving. that was kat

and that is it this week. live on twitter on @bbcclick and on facebook to. banks are watching, we will see you soon. after several days of quite cool, showery weather, only subtle changes taking place this weekend. there will be fewer showers around by the time we get to sunday. throughout the weekend, occasional sunshine, it feels quite pleasant. in the showers, it feels quite cold. some quite chilly nights around, as well. perhaps a touch of frost in a few places. it is chilly because there has been a flow of air from the north. high pressure to the west of us, low pressure to the east. the air coming down from the north of these pressure systems is unstable air, bringing showers.

a few of the showers for western parts of wales, cornwall, devon, a few near north sea coast zones, into northern scotland, as well. but away from the showery areas, and most of us will be away from the showery areas, we are likely to start the day with some pleasant sunshine. some areas of cloud and there, but where you have been clear for any period of time overnight, it will be a chilly start. temperatures are only gradually recovering as we go through the morning. it is still on the breezy side. you will certainly notice that across northern scotland, and here we are getting a fair few showers coming in on that stiff breeze. so on through the day, then, where you start with some sunshine, the cloud is going to build. there will be the threat of a shower. where you start cloudy, you may well see the sunshine come out for a time, but there is still the threat of a shower. it could be we see a longer spell of rain moving into parts of western scotland and into northern ireland. the showers get going elsewhere.

there could be some heavy downpours around, especially in eastern parts of england, that could come with a rumble of thunder, but everywhere at risk of getting at least one shower moving through that may be heavy. temperatures into the mid—teens. as we go on through into the evening, the chance again for a spell of rain, this time for south—west england. and even overnight, saturday night into sunday, there could be some heavy rain for some into south—west england. heavy showers close to the south coast, whereas many other places will become dry, and it is going to be much cooler in rural spots compared with towns and city centres. for some in scotland, maybe northern ireland as well, we will get close to freezing, for a touch of frost as sunday begins. maybe one or two mist and fog patches, because there are lighter winds on sunday. as high pressure begins to nudge in, and it will give mainly dry weather to scotland, northern ireland, variable cloud. wales and western england will see relatively few showers, but elsewhere across england, a scattering of showers. they could be on the heavy side, but by no means will everyone get one. with lighter winds, more seeing some sunshine. it will feel a little bit warmer

by the time we get to sunday. but monday and tuesday is looking pretty quiet, not many showers at all. quite a bit of cloud, a little bit of sunshine. welcome to bbc news, broadcasting to viewers in north america and around the globe. i'm gavin grey. our top stories: the uk's terror threat level is raised as the hunt goes on for the person who planted a bomb on a rush—hour train in london. the joint terrorism analysis centre, the independent organisation responsible for setting the threat level on the basis of available intelligence, has now decided to raise the national threat level from severe to critical. it's the fifth terror attack in the uk this year. the so—called islamic state group says it planted the device which injured 29 people. north korea's leader says his country will meet its nuclear ambitions despite sanctions, after the un strongly condemned friday's missile test.

and the cassini space probe plunges into saturn,