us humanitarian aid enter the country. trucks carrying food and medicines donated by the us have arrived in a colombian border town but have been blocked from entering venezuela by soldiers. local authorities in rio dejaneiro say they have detected a series of irregularities at a training centre for one of brazil's most popular football clubs — flamengo — where a fire killed at least ten people. youth players aged between 1a and 17 are among the dead. the king of thailand has denounced his sister's candidacy for prime minister — saying that such a move is inappropriate and unconstitutional. he said his elder sister would not be allowed to run for office because it was against tradition, even if she'd given up her official royal title. in a short while it'll be time for newswatch. but first, here's click. we've been banging on about

virtual reality for an age and while it's failed to ignite the imagination of consumers — i mean, how many vr headsets do you own, for goodness sake? it has started to catch on in areas like simulation, training and healthca re. marc cieslak has been to sheffield to investigate. make sure it's tight. that's it, yep. keep your grip in your right hand. yes, got it! so, what i see, there's different types of games and the game that i was playing was a bow and arrow one. and you have a bow in front of you and you need to pick it up and get that arrow behind

you and thenjust let it go and it shoots and pops it. here at sheffield's children's hospital, they're trailing some surprising therapeutic technology. with certain kinds of injuries, exercise can be a vital part of the rehabilitation process, ultimately leading to the patient getting better sooner. the problem is getting children to perform these exercises isn't always easy. right back. ooh. most of our kids have quite a long—term condition that they need to carry on doing their exercises for sometimes several years. keep the tight grip on the right. yep. they're doing the same things day in, day out, it gets really boring, no—one wants to do it, sometimes it's painful, it's just not really fun, they want to be outside doing things with their friends. which arm is the injury, the left or the right?

making use of virtual reality, researchers from sheffield hallam university have developed a system that they think will make children more likely to perform rehabilitation exercises by disguising their treatment as play. this version of the project is for upper arm injuries, primarily. the injuries that are normally from burns or an accident that they had from a fall. remember to swap hands, that's it. remember to look up as well and see where you're at. so how did you hurt yourself? i burned myself with a cooker lighter. i scarred my arm and my belly. we arrived at the decision to make the two games the scenarios of climbing and archery. based off talking to occupational the kind of movement they needed the patients to do. one of the motions that they needed to do was reaching behind your back and, kind of, a lot of upper arm movements. and so i thought, i wonder if archery would work.

because there's a quiver behind your back. you do the same motion of reaching behind to grab the arrow and then you get the added bonus of pulling back the bowstring and then we looked at things like climbing and we thought that was a natural fit as well because there was a lot of overhead motion, so you're really reaching out. the climbing. it feels...it feels realistic. while harry is being treated for burns, emily here has an entirely different issue. emily's got a hereditary multiple exostoses. from my husband and my husband's side of the family. so it means that she has extra bone growth. let's go for a higher one. well, it's really fun, because you're not seeing, like, stuff that you usually see every day, like you're seeing a whole new kind of world in it. if you have a big imagination, then it definitely makes it bigger. it's kind of a bit more playing than exercising, even though you are still doing your exercises, like, it's fun as well.

do you need a break or anything like that? is your arm tired — or? no, it's fine. she didn't find it easy. whereas before she would have given things up very easily. but she wanted to keep going. she wanted to pop another balloon. yes, got it! and she wanted to reach that next thing. but she's just been an absolute trooper. she just has a smile on her face every day. so it kind of encourages me to be positive. there we go. now, i don't have an injury, but i'm going to give this vr setup a go and see what's it like when i put the headset on and what it feels and plays like. here we go. you can understand how, when the children are playing this,

they get so wrapped up in the experience that they forget that this is actually helping them recover. it's early days for this technology, but they hope it could have a wide variety of healthcare applications. looking at other aspects such as pain reduction for burns, we're doing some work with amputees, learning how to use a prosthetic arm. so it's a lot of experience—based training. and we have a couple of other projects that we're currently just looking at — around, kind of, stroke and chronic pain as well. but the final word goes to emily. she might be a fan of the vr, but i do wonder if she'll be pleased to get the external fixator on her arm removed. will you be pleased to get that off? yes. it's quite annoying. brilliant. that was marc cieslak in sheffield. now, this weekend is one of the biggest dates in the british movie calendar. the bafta film awards are taking place at london's royal albert hall. and what better way to celebrate than by chatting to one of those

nominated in the best visual effects category for their work on fantastic beasts: the crimes of grindelwald. i can't move against grindelwald. it has to be you. technically you can do just about anything these days. so i think more of ourjob, at what we're set the challenge by bothjo rowling's scripts and by david yates is is to creatively push the envelope and use the technology to aid that. we had some very specific things thatjo had written in the script, but we also had, like, newt's hospital, where it was maybe a bit, a few were more background creatures that we could go on some of the same journeys that we did with the case. but one of the key creatures was the zouwu, you know, it's fairly specifically written as like a chinese tiger—like creature. one of the animation artists built it and animated it and got it moving. and then, really, it was a voyage of discovering of working out how it would move, how it would look, what its tail would be made of, et cetera, et cetera. in the script, it described it as it

runs 1000 miles a day. tim and i were like, my god, wow, how are we going to describe that, how are we going to show that? so we came up with the idea that maybe it could magically leap and bend time — distort space—time and land in a different space. so it could cover a large distance very quickly. you know, it's over a year's work just for that one moment in terms of concept and working out how on earth to do it. nagini. the moment has come to take our rightful place. nagini appearing when we read the script — we went, oh my god, nagini's a woman in this film, not a snake. we went, oh my hod, nagini's a woman in this film, not a snake.

we had to come up with an authentic way to turn a woman into a long tube. how would we do that to make it feel real. we came up with the idea that, really, maybe she's almost consumed by the snake, rather than physically extending out. you recall her being wrapped in her own coils, disappearing and and then coming out as a snake. so we had a contortionist. claudia kim who played nagini, we showed her what we were planning and what she acted the first portion of the shot, then we had another contortionist in there who was, you know, dressed in a matching costume and she did the first portion of the shot, so it's for real — she bent over backwards and put her head through her own legs. got shot elements of claudia kim kind of pushing herself along the ground and turning her head up, matching kind of what we had done, which was then glued together with a full cg version of the human character and a full cg snake. so, again, all in all it was about 14 months worth of work

for that one moment on film. i don't think you have seen a woman pull into a wall and turn into a snake before. so, really, it's trying how to get those moments over, feeling as grounded and real as possible. we wanted it to feel as if how it would feel if you were physically they are, rather than feeling like an effect. i think that is what the technology gives us, the ability to do that. the wizarding and non—wizarding worlds have been at peace for over a century. grindelwald wants to see that peace destroyed. fa ntastic stuff. and,of course, we wish all of the bafta nominees the best of luck for the big night. next week we'll have more awards contenders for you as we continue our deep dive into the world of visual effects. and before we go, for this week — this. it may not be as graceful as a figure skater or as fast as a speed skater, but unlike many people, this robot taught itself how to skate on ice. at the computational robotics lab at eth zurich, professor stelian coros and his team developed a modular robot with 3—d printed parts.

each leg can be built for any type of locomotion — from walking to rolling to ice skating — and each robot can have any number of legs. they then wrote algorithms that described the physics for each type of movement and terrain. the only thing we tell it is how one ice skate behaves on ice. in particular, the fact that it's free to move in the direction of the blade and it has high friction forces in that direction. after this, the robot figures out entirely on its own how to move on ice. using this machine learning approach, different robots can learn to autonomously navigate any terrain. researchers hope this will lead to affordable, easy—to—design robots that can be used for search and rescue operations, to inspect dangerous sites, and even for deliveries too difficult to reach areas. i envisioned a moment in the not too distant future where it will be as easy to create robots as it is to currently make structures out of lego blocks, for example. i think this is a really exciting motor skill

that we would like robots to learn, not necessarily because it's useful, but rather because it combines are many different challenges into one beautiful performance. and that's it for this week. the full version is waiting to you on iplayer. don't forget that we live all over social media. so wherever you are you'll find us, instagram, twitter, facebook, youtube, we will be there waiting for you. thanks for watching. and we'll see you soon. hello and welcome to newswatch with me samira ahmed. donald tusk‘s comments about hell this week annoyed many people, but did bbc news pour oil on the flames by distorting his words in their headlines? and liam neeson has also

caused a storm this week. was the bbc unfair in how it reported what he said too? provocative statements have been at the heart of news coverage for the last seven days. and how they have been reported has been exercising newswatch viewers. take wednesday's carefully worded gibe from european council president donald tusk at a press conference in brussels. i have been wondering what the special place in hell looks like for those who promoted brexit without even a sketch of a plan how to carry it safely. those comments immediately, tweeted by mr tusk‘s office, were widely condemned by brexit—supporting mps as george alagiah reported at the top of that night's news at six. the president of the european council stands accused of insulting british politicians.

earlier today, donald tusk said there was a special place in hell for leave supporting politicians, those were his words. but some viewers pointed out that those weren't quite his words, or at least not all of them. mr tusk spoke of those who promoted brexit without even a sketch of a plan of how to carry it out safely, but that last thought, though it featured elsewhere in the programme, was not included in george alagiah's introduction. steve martin was watching and told us... "this is not what he said. not the same thing at all and highly inflammatory at this time." iain stewart agreed. " did bbc‘s manipulation of what he actually said gave a clear suggestion that tusk had used an aggressive tone, whereas what he actually said was a reflective comment on what he and i am sure many others of you as a sad situation. those who felt the shortened version of the quotation distorted its meaning also pointed to its use on thursday morning's today programme. and the initial headline on the news website, "special place in hell

for brexiteers," later deleted. and on the bbc politics twitter feed. stephen kingsnorth felt compelled to contact the bbc for the first