the latest headlines from bbc news: donald trump has held the first of what he's calling a "campaign rally for america". he told his supporters that he wanted to speak to americans "without the filter of fake news". he reiterated many of his pledges on the economy and security and promised to build a wall on the mexico border. the us vice president, mike pence, has used his first major foreign policy speech to reassure allies that donald trump does support nato. president trump had called the military alliance obsolete. the white house said it expects nato members to spend more on defence. norma mccorvey, the woman at the centre of a 1973 supreme court decision establishing the right to an abortion, has died at the age of 69. the issue has remained divisive, and in later life norma mccorvey became an opponent of abortion. time for click.

this week: waterfalls and flowers, lions all around. oh, i can see lions and stuff, playing. big screen excitements, attack of the australian spider box. projectors have come a long way. we first meet team lab, the 400—strong digital art collective, last year in japan. the team of artists, programmers, engineers, cg animators, mathematicians and the like,

love to make an impact and here at the pace london gallery, they‘ re presenting eight of their most eye—popping pieces. as with the work in tokyo, the idea here combines motion censors and the projectors, which means you have a completely interactive piece that you can touch and change. the whole room has been fully calibrated so the censors can detect where everyone in the installation is, really, really accurately. and the artwork, the projections, are calculated live. this is not prerecorded video. the pictures really do react to whatever you do while you're in the room. so, for example, i can... ..kill a butterfly (chuckles) — don't show this at home, kids. this room is called flowers bloom on people.

with no—one in here, it's just a black room but if you sit around for a few minute, you'll find that nature starts to grow on you. now i would say this is pretty cutting—edge projector technology but marc cieslak has assured me he can give this a run for its money. go on then, marc. this is a home entertainment concept from razor, a company most famous for manufacturing gaming pcs, covering more lights than blackpool illuminations. the concept makes use of coloured lights and projected images, working together in synchronised harmony. what we have here is a concept lighting rig, which is actually key to the action on—screen. so the lights in this room will change colour depending on what's happening, but it's only part of what's going on. so if ijust hit this button here,

we get the largest screen i've ever seen laughs. and that giant screen size is thanks to a pretty expensive forke projector. the projector is fitted with an 155—degree fish eye lens, it combines this with two depth—sensing cameras which scan the rooms for objects and furniture. the system then adjusts the image to prevent it becoming distorted. so the idea is that by having a screen which envelopes the peripheral vision of the viewer, you really feel like you're thrown inside the action, and it is surprisingly effective. game: oh, yeah!

at the moment, this system remains a concept but razor has hinted it might one day bring it to market. that was marc. and now robots. one of the big uses of which these days is to go to places and do work that is not safe for humans. but when nick that he wanted to see such a situation on a paradise island in australia, we completely believed him... but this is his story. peel island, off the coast of brisbane, queensland, is a serene beauty. but for over 50 years, this remote paradise was a prison. in 1907, this island was designated as a quarantined hospitalfor those with leprosy — a so—called lazaret. hundreds from the mainland were sent

here in exile for a life sentence, with over half dying in isolation. since closing in the late 50s, many of the unique buildings have fallen into disrepair. yeah, look, it has been totally eaten by termites, it's just mud now. it is deteriorating on a daily basis, basically. the only thing keeping it is the roof. the majority of the buildings are a death trap, too dangerous structurally for people to enter today. so this group of architectural and robotics researchers are developing technologies which will at least help to preserve the buildings digitally. we are doing laser scanning of heritage buildings on peel island, using a lot of different kinds of equipment. as many types as we can get. meet hexapod, this six—legged beast

is designed to go into buildings too dangerous for humans. with nimble limbs, this light—weight bot should traverse all types of terrain. now, there's another leg. there's a screw lose. mmm...well, it is a work in progress. the team are developing ways for the hexapod to feel the ground around it and detect for itself if the floor is safe enough to walk on. in the meantime, this bot has been built from the ground up, with rapid redesign in mind. it is all completely modular. we can redesign and respect the robot in the field as we go. with this particular one we should be able to generate a real—time map as the robot drives through. depending on what kind of use you want, you can quickly assemble, for example, if you add another system, you canjust take off this

wheel, put in another wheel, depending on the room condition, and you are good to go. and, of course, they've got a drone, equipped with a rotating lidar sensor, the team is using it to autonomously quickly scan the island from above. i'm covering this whole clearing here in, i think it was 14 minutes and that will have all of this area mapped from above — to walk it and capture all the low stuff, i reckon you're probably looking at half an hour, a0 minutes, maybe longer. technology really allows us to capture a changing, fragile, remote, degrading site really quickly which is incredibly important because it is falling apart before our very eyes. this is an incredible rare

example of inbuilt racism in architecture. there we ren't many lazerets in australia but this was the only example of segregation in a lazaret and so it is really important to understand the story and acknowledge the story is part of our history. i can't imagine sitting around here for 30 years, trapped here on an island. walking around here, it's really quite eerie to see how people were forced to live in these conditions against their will. you can see the inequality straightaway between how the whites lived, in their purpose—built houses with a nice patio and a lovely sea view, and how everyone else, the nonwhites, where they had to sleep and stay. sometimes four orfive tojust a shed. now, they were just galvanised iron. the government did not really take too much notice of the aborigines. we need to look down

into the ground now, into the cemetery with ground penetrating technology, because we do not know how many people are buried. we do not know who they are but it would be nice to knowjust how many and where they are too. leaving the island, ifeel that i have experienced a little of what it was like to live there. the team want to share that experience with others. they aim to present their findings in virtual reality to educate new generations about this part of australia's past. separately, for the robotics researchers, the hope is that the know—how learnt here will improve smart adaptive bots used in disaster relief in the future and perhaps one day save lives. hello and welcome to the week in tech.

a week which saw facebook announce its own app to play videos on your tv. a new cs was born. and a week in which the head of uk's newly opened national cyber security centre slammed the idea that we should all be expected to use long complicated passwords. and talking of remembering numbers... phone rings remember nokia? let them help you with the remake of the super popular, turn—of—the—century 3310 model. hmd, the finnish manufacturer with exclusive rights to the brand is to launch an homage to the almost indestructible model that's famed for great battery life, ease of use and snake. phone zombies in holland could be a step closer to not getting killed after the dutch start traffic lights in the pavement. called +lightlines, the pilot project proves that phone addicts would rather chance death than look up. money well spent? more colour—changing news — this time for your hair. london outfit, the unseen says this is the world's first hair dye that changes colour depending on the temperature. remarkably, that

semi—permanent pigment has not turned enough heads just yet — its designers are still looking for commercial partners. meanwhile in dubai, the government's planning passenger drones for this summer. the ehang automatically flies to its destination, carrying one person and, depending on total weight, maybe their bag as well. now, we have often talked about virtual reality, eye beacons and self driving cars on the show but this week, lara lewington took a trip to wolverhampton to see how they're being put to some pretty impressive purposes. oh, i can see lightings and stuff playing. i've been discovering

some of the latest ways that the technology is being used to help the visually impaired. it all starts with a spot of virtual reality. 0k. if you can try it this way. you pull it over your eyes. itjust made me so, it was happiness but it made me cry and ijust couldn't believe that... i'd been without full sight for so many years and then all of a sudden i could see things that i hadn't seen for 30 years. here at the beacon centre, a charity supporting those with sight loss, an interesting trial is taking place. i'm going to start the video... it seems some people can see things in vr they could never see in the real world or on a screen. i've lost paul mccartney, though. you've lost paul? yes. oh, no, he's there now! i'd never expected it

but when they put the head set on, i mean there was giraffes, coming up and looking at me! what would you say to other people with a similar level of vision to you about the experience of being able to do this and the emotional side of it? oh, if you've got the chance, you have to have a go. there is nothing quite like it. i mean i know it's not full sight, because you've got to wear a machine, i'm not saying, that but to give you the experience, it's just absolutely wonderful. there are a wide range of conditions that cause sight loss. the nature of which can vary hugely, and even for those with similar problems, the benefits of the vr have varied. by along with the university of wolverhampton, experts are trying to understand how this is possible at all. what we found quite quickly is that people who had central loss,

macular type conditions, as they are called, are the ones who seem to get most benefit. where they still had peripheral vision and whether that peripheral vision is so stimulated as to fill in the gaps, or, whatever wee don't understand yet, is it because it's so close? is it because there are still sight receptive cells in the centre of the vision, so that when they're stimulated enough, that they will fire and therefore create the vision? is it the curvature of the lens? there's a whole host of things we're still trying to explore to understand how it works. if i could use that when my daughter's doing her school plays or she's singing in the choir, like, i could never pick out who she was or what she was doing, or be able to see what you are seeing and that could really be quite life changing. but however clear the virtual world may seem, finding ways to ease day—to—day tasks is a real priority. diversion to the left.

temporary footway in road. five to 10 metres. there are eye beacons built in here which connect this to the mobile app, so if somebody is approaching and they have the app installed in their phone, they'll receive an alert to let them know about the roadworks and how best to approach them. and for someone like louise with two young kids, this smart street furniture could make all the difference. because it tells you which way to go, so it can still be in my pocket i can have their hands, one each, and i can hear the voiceover, so it will say something like the pedestrian crossing's coming on the left. it's there for three days or however long. so if i do the school run the same day, i know exactly where it's going to be, i've walked that walk yesterday. also this week, some big claims from a company that say their smart glasses can give the legally blind 20/20 vision. as well as being able to stream content, they've captured the user's surroundings, converting them into a form, they say, is easier to identify for those

with limited vision. sadly we couldn't put a pair to the test just yet, and it's early days for much of what is being trialled here but the possibilities are certainly looking good. that was lara. now, virtual reality has been grabbing all the headlines in recent years but don't forget augmented reality. now, this is the idea of projecting computer—generated images on top of the real world. a bit like this but in a pair of glasses. well, a small band of augmented reality pioneers have been really pushing the technology. here's marc again with some pretty classy eyewear. these augmented reality glasses are basically a wearable computer. for the last couple of years,

augmented reality specs have been used primarily in an industrial setting or in the workplace. these have been competed by a company called odg, and they've been designed far more with the consumer in mind. they feel a lot closer to normal glasses, so to get the best out of them, i want to move around. so, if i stand up, at the moment, there's a 360—degree video playing. if i look around, i get a different viewpoint here. i see a robot in front of me and what looks like some kind of futuristic hospital. and there's a guy over here, who seems very unhappy and another guy who looks seems to be shooting at him. the images move seemlessly with my head. if i look around i can see planet earth in front of me. but this is the cool bit, it moves. i can walk inside it and see from outside of the planet, and appreciate it from this angle, and if i stand here, yep, a space station that's orbiting the earth as well. now, the glasses know

where they are, spacially, because there's a couple of cameras on front of them. and all of the processing is happening on the head set itself. the odgr—8 glasses will cost around £800 but they are basically a wearable computer. there are some cheaper lower tech ar options out there, though. there are lots of low—cost virtual reality headsets that make use of smartphones. this is a low—cost augmented reality headset that uses a phone. phones just slot inside it here. put an ar app on it and the images on the screen is reflected on these lenses right here. so let's give it a go. so when the headset‘s on, i can bring down the screen and i scan see graphics reflected from the phone just in the headset.

now, it has another trick up its sleeve as well. you can attach peripherals on to it. i can see my hands in front of me and use them to cast flames. take that, mr crocodile. just a normal day at the office for marc then. now, if you were watching the programme last week you would have seen us chatting with the visual effects supervisor for the film the jungle book. last sunday the team behind it picked up one of the biggest honours in the film world and won the bafta for best visual effects. many congratulations to them and of course we'll claim absolutely no credit for their victory. see, we love visual effects! can't you tell? this week we're continuing the buildup to buildup to the academy awards by looking at another movie that's been nominated in the best visual effects category, this time it's

marvel‘s doctor strange. now, we got exclusive access to industrial light & magic in london, they worked on the breathtaking final scene in the film set in hong kong. warning, if you haven't seen the movie yet, this next set contains spoilers. i repeat, it contains spoilers. still with us? good. i spent so many years peering through time... ..looking for you. the idea of reversing the traditional end to any kind of superhero movie where it gets bigger and bigger and the city gets destroyed and the superhero saves the day, but there's a big old destruction going on. well, this is the opposite, there's a big old destruction going on and it gets reversed, so by the end the city is pristine, no—one knows the hero saves the day because he made time go backwards and reversed it all. one of the challenges was constantly selling backwards time, every shot is stuffed with things falling upwards, explosions un—happening, puddles un—splashing, people un—falling over and these things so we mixed together some

footage of people going forwards in time, that's one of the conceits in the movie, doctor strange and his friends and the bad guys are going forward in time but they exist in an environment going backwards in time. so mixing those two things together is quite challenging. there are some digital humans in there but there's also a lot of plate photography as well so one of the big challenges there was how do you have convincing footage of people moving forwards and backwards but with the camera moving? well, one of the solutions was using something called motion control, which was a computer—controlled camera so we could film benedict cumberbatch as doctor strange and the camera moving around him appropriately, record the move and reverse the same move and have the extras running through the frame. when you reverse the footage, the camera move goes back to the original movement but everyone in the frame by virtue of reversing the footage is now running backwards. so now you're mixing together people running forwards and people running backwards in the same footage.

but once you get beyond that, of course, every frame is full of explosions and fire and smoke, so the key thing again is blending those things together and then making sure people aren't running through places where there's meant to be an explosion or doctor strange hasn't got someone running through his cape of whatever because lots of careful planning has to go into making sure there's no interceptions of the action. so that can be achieved by literally having some markers on the floor, saying, "doctor strange will be here", but people do forget those things, and they sometimes run straight through. or it can be a case of doing something called body tracking, so we might look at doctor strange, we might work out his arm or shoulder is here in 3—d space by measuring the distance in the computer and having something bounce off his shoulder, so it really sells he's in the plate by emphasising the physicality of the area so we can put in some 3—d generated debris so it can bounce off him and go in a different ways of there's a variety of ways you can approach these things together.

this is a breakdown of one of the shots we did, it gives you an idea of some of the layers of material that go into something like this. that's the plate photography there. this was all shot at longcross studios, a set built along the bottom and the top of everything is digital and all the flying debris is digital. you can also see there's a mixture of actors running forwards and then doctor strange in there as well, so shot on different plates and mixed together. so much you don't know. teach me! yep, benedict cumberbatch giving doctor who a run for his money in the tiny—winy—ness of it all. that's it from us. tra nscending boundaries is at the pace london gallery until the end of march. a few more photos from this and all the other pieces on twitter. @bbcclick is where we live.

thanks for watching and we'll see you soon. hi there. cloudy for some, sunny for others, wet for a few, but mild. that is the theme at the moment, isn't it, and that mild theme continues through sunday as well. once more, temperatures widely above where you would expect them but a lot of regional variation around the uk, so i will try and pick out some detail. it looks as if most places will start the day on a dry note. quite a cloudy one in some places. some areas of fog, particularly across some central and southern areas, but it should not be too extensive, and it should lift with time.

cloud across the west cost of wales with an odd spot of drizzle here. quite a murky misty start, a misty start, across northern ireland as well. and the odd spot of drizzly rain from the word go, actually, across the western highlands and islands of scotland. but to the east of the hills, already some brightness out there, and temperatures already quite well up. eight or nine degrees in a good few places. again, to the east of the pennines, some sunshine. probably grey further west towards cumbria. across the midlands, east anglia, much of southern england, it is going to be a reasonable start to the day. a lot of dry weather. there could be some areas of mist, thicker patches of fog up over the high ground in particular, perhaps around the coastal but it don't think it'll be too widespread, and there is a chance where you are we will see brightness developing as we go through the day. something of a west—east split emerging. that is to say, western areas keeping a lot of cloud, particularly towards coastal areas, some dampness and some more persistent and perhaps heavy rain, eventually, for the west of scotland. an increasingly blustery wind. always the further east you are, the better the chance of holding onto some brightness, and temperatures responding.

up into double figures, and one or two places could get as high as 13 or 1a degrees through sunday afternoon. if anything, we are going to import some even warmer, sub—tropical air coming in off the atlantic, and toppling down across the uk as we head into monday. the catch is it is going to be moist air, carrying a lot of cloud, in between these two weather fronts, so perhaps not much in the way of brightness, and this front will generate some wetter weather for scotland and northern ireland. it will be heading its way into parts of northern england and north wales eventually as well, brightening up behind, though there will be very gusty wind. now, mid—teens potentially, especially if you see some brightness to the south of that front across some central and eastern parts of england. now, the fronts continue to come across the uk as we go through the rest of the coming week, so a disturbed spell. there will be some wet and windy weather at times, particularly across the more northern parts of the uk, potentially it could get quite stormy later on in the week. one thing you will notice is that it turns chillier compared to this

current time, and feeling colder in those blustery winds as well. welcome to bbc news, broadcasting at home and around the globe. i'm lebo diseko. our top stories: iraq's prime minister says the long—expected assault on the western half of the city of mosul has begun. donald trump holds a campaign rally in florida, saying he's speaking to americans "without the filter of fake news". i want to be in a room filled with hard—working americans i want to be in a room filled with ha rd—working america ns who i want to be in a room filled with hard—working americans who love their country, who salute their flag and to pray for a better future. trying to reassure the allies — america's vice—president says the united states has an unwavering commitment to nato. and norma mccorvey, the woman at the centre of the court decision that legalised abortion in america, has died. we begin with some

breaking news this hour. the iraqi prime minister has announced the beginning of the long—expected assault on the western half of the city of mosul.