a third time. 1900, 192k, and now 202a. a century on, things have certainly changed — and we're notjust talking about the outfits. every time there's an olympic games, it's a chance for notjust sport, but sport tech to take to the world stage. and we're always learning about new ways to monitor how exercise and sport affects the human body. and what's trialled here at elite level will almost certainly trickle down to the rest of us ordinaries at some point. so first, let's hit the pool — where alasdair keene is checking out something very snug indeed. i knew it from a very young age — that's where i want to be. the olympics is just amazing to go to as a whole, but obviously, it's taken me about four years to do so, so i'm so happy to finally have made that progression. alasdair: getting to this point takes determination, lots of training, and the best technology. there's a piece of equipment that all swimmers have that's tightly regulated, and designers are constantly trying to improve — their swimsuits. on the face of it, some costumes haven't really changed much over the years. but at the elite level, these are highly engineered bits of tech costing hundreds of pounds. so typically, in olympic cycles is how we work. and we will have a revolution of a suit technology at an olympic games, something which is hopefully ground—breaking and moves the goalposts a little bit higher. but how far designers can push the innovation is dictated by the sport's governing body. they limit what materials can be used, or how and where seams might be placed. but that doesn't stop companies pushing the boundaries, and there are a handful competing to produce the best suits for this elite level. please step up. athletes will try out several different ones to decide what they want to race in. and today, honey osrin is trying the latest suit from arena. it includes a new innovation in material, designed to give the swimmer compression to help them be more streamlined in the water, but with flexibility to make it easier to put on. so if you look at this suit, you'll see there's two different textures of fabric. they both have the tpu hyperforce fabric in them — but one is smooth, and one has got channels in it. we know from the research, we know where water needs to be channelled, because vortexes, vortices are created because of the form of the body. so we need to get the water away as soon as we can from those areas. and that's why we have these channels in certain parts of the suit. how does it feel? yeah, so...usually takes — so with the suits, arena suits that i've tried on before, they take longer — i would say, like, with the new suit, it takes about ten minutes, but this one took two minutes to get on. how important is the compression to you? yeah, really important. so, ifind that the more compressive it is, i feel more buoyant in the water. the best way for honey to try out this suit is in the water, and we can use cameras to see how it's performing. honey is wearing the costume for the first time, swimming up and down. what can you see by using this analysis about the costume? so, as you can see . around the suit here, there's minimal kind of bubbles created, or air pockets. - so that's because the suit's compressing the body - into a more streamlined position— and allowing the water to flow more easily across the surface of honey's body~ _ so if she was wearing just a bog—standard off—the—shelf suit, we would expect a lot more bubbles? yeah, so the fabric- could absorb more water. erm, the fabric wouldn't compress as much - as what the racing suits do, so yowd end up— with more bubbles that are created around the body. as she moves through the water. and if the fabric was absorbing too much water... yeah, that pulls you down. ..it'd pull her down. - your hips start to go lower, so as you're going throughi a race, you'd fatigue more. so that only makes it more difficult _ for you to maintain - the speed and technique and actually move through the water fast _ at the back end of the race, especially like - the 200 backstroke that honey swims, the main event. i but there's only so much a coach's eye can see. the real decider is how it feels in the water. hello! hello. how does it feel? yeah, really good. so, like i was saying before, i think i got the suit on in about two minutes — and usually it takes me about ten minutes with a new suit. so i thought, how is it going to feel in the water? but as soon as i got in, it sort of all compressed, and again, ifelt really, really buoyant. so that's really important to me. how many tests of a suit will you do before you actually decide? yeah, i'll probably want to do, like, one or two, erm, one or two run—throughs. so i'll do something called, like, stand—up swims where... so, i do 200 back, so i'll come in, put the suit on again, erm, and just swim the race how i normally do just in a training environment, and see how that feels. well, good luck in the olympics, and we should let you keep training. thank you so much. so, which suit will honey pick in the end? we'll have to wait until race day to find out. spencer: didn't see alasdair�*s trunks, i notice. anyway... paris is such an iconic city. and the olympics are notjust an opportunity to revitalise a host nation's infrastructure, but to showcase its beautiful heritage, too. this is pont alexandre iii, widely regarded as the most ornate and extravagant bridge spanning the seine. you'll be seeing a lot of this bridge during the games, because it's involved in several events. the marathon swimming will go under it, and the road cycling will go over it. mind you, while the time trial event finishes at the bridge, spare a thought for the cycling road racers for whom this will be a distant memory by the time they've cycled through paris, down through the chevreuse valley, and then all the way up to a final climb on the butte montmartre. and then there's the mountain biking. it's been an olympic sport since 1996, and this year will take place on elancourt hill — the highest point in the paris region. however, the sport has yet to appear at the paralympics. but ben derico's been to meet the bikers who want to change that. ben: this is competitive mountain bike racing, a sport where riders hurl themselves off massive jumps, careen through narrow tree—lined trails, and fly downhill at eye—watering speeds. so, i started competing when i was like 12, 11 years old. i used to ride downhill. this is gustavo ortiz, a competitive mountain biker and the two—time national champion of his native chile. i was pan american champion, national champion multiple times, and ifinished 20th in a world cup. it was my best result. but, while training in 2017, he had a tragic accident. i crashed in whistler, and ifinished paralysed from my chest down. did you think you would be able to cycle again? no, it never came to my mind. heart beats un coeur. un etat d'esprit. although mountain biking will be an official sport at this year's olympic games, it's not yet been made an official sport in the paralympic games. that's partially because the bikes needed to race simply haven't existed. many traditional handcycles are built to be ridden on the road and feature wide wheelbases. occasionally, they even place riders kneeling forward. this position puts their centre of gravity higher — something that would make sharp turns difficult on a loose dirt mountain bike trail. but a canadian company think they've developed a solution. i broke my back in 1996 snowboarding, and prior to that, i loved mountain biking. i loved snowboarding and climbing, i was, like, a kid who loved the outdoors in canada. and very early on in my injury, i recognised that i was going to be 100% reliant on technology. so, a machinist by trade, christian began building experimental adaptive mountain bikes at home. the problem was always that i would tip. i would tip over, or, like, i would go fast down a hill and corner and, you know, tip to the outside of the corner. for years and years, he tinkered with different designs, but nothing worked. so he focused his energy instead on a custom cross—country ski chair that could shift and pivot over undulating snow. it was while skiing that a light bulb went off. if he just flipped the ski set—up over, he'd have a system that would allow the wheels to articulate and absorb shocks independently. the main, main thing is the articulation. so, with that, you can, like, go through skinny sections, you can crawl into rocks, and then another rock comes, so you canjust move it, and it adjusts by itself. the frame can also absorb big drops, allowing riders to maintain speed through technical sections the same way they would on a standard mountain bike. aside from its articulating frame, these bikes have a few other unique features that make them especially useful for mountain bikers. unlike most handcycles, these bikes operate with two wheels in the front and one in the back. combined with an upright seating position closer to the ground, riders here can easily shift and pitch their weight to avoid tipping over on sharp turns. the handcycles also come with pedal—assist motors, and there are even fully motorised models as well. currently, each bike is custom—built for the rider, and ranges in price anywhere from $13,000-20,000. bowhead says their bikes are already in 30 countries, and more bikes in more places could help the sport offer meaningful competition and worldwide reach — two requirements to become an official paralympic game. even still, christian says these bikes are helping bring a new—found acceptance for adaptive mountain bike riders. we're a part of cycling now, which is huge for us internally at bowhead, but it's way bigger for our customer. like, our acceptance is their acceptance. while it has helped with his racing, gustavo says this technology has helped him get back and enjoy riding his bike again. i feel that i am discovering, like, yeah, another kind of riding, because i was so used to just racing, like racing, racing, racing, i'm preparing for racing. but now i am, like, just enjoying the process of riding and going for long rides and, yeah, like, learning how to enjoy being in those places. while we're certain a bowhead won't be at this year's paralympics in paris, they mightjust be kicking up a cloud of dust in los angeles in 2028. in many olympic sports, it's clear to see who's won — my my concern would be how long the growth can be sustained. mcdonald's is removing aa powered drive thru is in its restaurants in the us after customers reported mistakes in their orders. the trial of the system, which was developed by ibm, uses voice recognition to process orders. it's not been entirely reliable, though, watched requests ranging from bacon topped ice cream to hundreds of dollars worth of chicken nuggets. nintendo has announced the surprise release of a new game, the legend of zelda, echoes of wisdom. as the first of a stand—alone title with princess zelda herself as the playable character. and the skull and brain of a 215 million —year—old fossil has been seen for the first time, thanks to micro ct scans carried out by edinburgh university. a 3d representation will provide researchers with more detail on its behaviours and the evolution of similar species. in many olympic sports, it's clear to see who's won — the first across the line, the one who jumps the furthest. they may be close, but the results are pretty hard to argue. but some sports can be more subjective, i suppose. judges watch performances and decide, in a split second, the scores. and that's one of the areas where this year's olympics is using ai assistants — as l] rich has been finding out. l]: the perfect ten — awarded to 14—year—old romanian athlete nadia comaneci in 1976. she became the first gymnast in olympic history to be awarded 10.0. the scoring display couldn't cope — which is why it says "1.00" in this picture. judges went on to score nadia six more perfect tens — that's because she didn't make errors like missteps, bent knees, and falling — all of which deduct points. nowadays, ai complements thejudging process, and computer vision can recognise when a gymnast�*s moves are worthy of a podium place. right now, the rules have changed since the perfect ten. the score right now, it's a combination between the execution and the bonus points, which you can get a14,14.7,15. so, the only ten is in execution. nobody has scored yet ten in execution, because it's really, really hard. all this data is then gathered, processed, and we can provide dedicated graphics to fans watching these incredible races on tv. the capturing time, the processing time and then, the visualisation of this data on screen is taking less than a tenth of a second. so it has to be extremely fast in order to be able to appreciate the athlete's performance. this year, swimming, diving, tennis, and athletics are some of the sports using ai systems to help with judging. but technology, already the official timekeeper, will capture moments of an athlete's performance that you would not be able to see with your bare naked eye. how has it been, introducing this sort of technology to the olympic community? it's a journey, and it's, first and foremost, teamwork. so we obviously want to make sure that whatever we introduced has been thoroughly tested. so we'd bring it to local championships, now televised to a national championship, eventually televised to a continental championship or world cup, world championship, and then to the olympics. visitors to the games will be able to try out this ai—powered lab. it calculates sporting ability through a series of athletic drills. time to put it to the test. it's great for talent id, it's great to develop talent, but it is also fun. and i think people forget that with ala little bit sometimes. we can have fun with it and actually, just knowing, hey, you're suited to this sport or 70% matched to this sport, we might find out something about you with a sport that you never knew, you've never played it before. and i'll talk you through just a few things as we go around. 0k. and actually, - we'll get someone over... you want to do a couple of tests as well? absolutely. excellent, good. probably most people would have some trepidation, but i'm excited — and that could be really misguided. i'm really excited. two, one, and go! while i'm pushing myself to my physical limit, my movement and agility are analysed. the stats are almost instantaneous, giving human coaches detailed reports on where their budding olympians need help. three, two, one... good. ..and well done. now you're feeling warm, right? they chuckle that was actually really good fun. eight out of ten. wow! good job. that's cool! - so, we're finished with... we'll get you sat down now, we'll finish with some cognitive, yes? yes, that's a great idea. good, all right. wow. ok, i have some skills. there are cognitive drills too — these were my favourite. two fingers ready only, and then, tap. . .- so, that's. .. that's it, tap, tap, tap, go, fast, fast! i 0h, like this? - that's it.- that's it. i am a concert pianist, so i'm probably cheating a bit. well, there you go. that's good data. wow. exploded! ok. that's actually really strenuous. i know it looks like i'm justjabbing at a screen, but it's, er, i go into full—focus mode, like, more than when i'm playing tetris. all your data has now come in in real time onto your report. anything eight, nine, ten is elite performer. anything maybe that's a bit more of a two, maybe not so much, right? so, cognitive, really, really high in two of the three, a bit lower in one of them. reaction�*s really good. agility was about average, and then, a bit lower on the jump height. brilliant — can'tjump, can react. that's a good summary. they laugh andjump! oh, good, good. i really wanted to try the tasks again and improve my score. and it's certainly a great way to incentivise training, because there's immediate progress reports. apparently, i should try table tennis. max whitlock is britain's greatest gymnast. he's won multiple titles, including three world championship golds and six olympic medals — three of those were also gold. but this will be his last time competing at the games. he's retiring after paris, so fans may want to watch his every move. the olympics, of course, provides great excitement all over the world. but, despite the fact that athletes move fast, they can't be everywhere all at once. so maybe this is a solution. 29 cameras make up this volumetric studio, which will have more than one use for athletes. all those cameras are then fed into a capture pc that runs on intel processing power. we can capture human performances, interactions, singing, dancing, whatever, in full 4d. so the result is a 360—degree video that we can use to insert in other 360—degree or virtual environments. the end result is a digital version of the person which can be beamed into tv studios around the world during broadcast interviews. i'm max whitlock, team gb gymnastj and six—time olympic medallist, and i'll do a somersault in this new technology. - using a tracked camera, we can synchronise the virtual environment and the athlete doing a backflip with the interviewer in real time, so it seems like they're actually together. any athlete would call out and massively welcome i new technologies that will- enhance the viewing experience, spectator experience, to seej sport done in different ways. i think it's... i think it's obviously very, - very clever, with new ways to move forward _ to show sport - in different ways. i think that's amazing. so this is a completely authentic recreation of the actual human form. we don't add anything, we don't take anything away. it's the clothing that they're wearing, it's their personality, it's the words that are coming out of their mouth. so it's a true, genuine capture ofjust that person. today, in this - new technology... and here we have it — the smartphone version of an ar athlete, which sports fans can access byjust scanning a qr code. there we go. what was the turning point where it felt like it was fit for purpose? it took a lot of r&d to get to a point where a human actually looked like a human. you can't mess up the way a human looks, right? you know, our human perception is very astute, and so, we can't, you know, if someone's eyes are off a little bit, you know, we recognise that immediately. and so, in the reconstruction process in 3d, we had to get it perfect. and to be able to do this live is quite something. that's right, a lot of ai and machine learning have gone into the process to be able to reconstruct this in real time, and actually live—stream this data to a point where you could be anywhere in the world, interviewing an athlete in paris, and have a conversation with them such that the latency is so low that it's like, you know, you would be, you know, next to them. my turn now! no problem. well, yes, that's me — somewhat less athletic than max, but at least the virtual version can keep going. and that's it from us from paris. hope you've enjoyed our tour of the tech of the olympics. thanks for watching, and we will see you soon. hello. well, we're past the summer solstice now, and the weather has taken a decidedly more summery turn over recent days. we've had temperatures up in the mid 20s. heading through the course of the weekend, still relatively warm, particularly by sunday. some spells of sunshine for many of us. not completely dry — a few showers in the forecast. we've got a weak weather front that's pushing its way gradually eastwards. that should clear out of the way gradually on saturday. and then we've got a bit of a westerly influence to our weather, the winds coming in from a south—westerly direction. there's that cloud initially sitting across central and eastern parts first thing saturday. breaks up through the course of the day to allow some sunshine for many areas. one or two isolated showers, particularly towards the east. later in the day, they'll be a little bit more cloud increasing across northern ireland and northwest scotland. temperatures for stornoway for instance, 15 degrees. but for the bulk of the uk, we're looking at highs between around 18 to 22, so slightly cooler than we saw on friday. second half of the weekend and just the remnants of this frontal system that are clearing towards the east. but we're likely to start with quite a bit of cloud, you can see here for parts of northern england, wales, the south west as well. some sunshine either side of that and the cloud tending to break up again as we head through the day. things are going to be warming up, the winds coming in from more of a south, south—westerly direction, bringing some slightly warmer, more humid air. so 25 degrees, could see 26 in one or two spots on sunday. and more widely, looking at those temperatures, the high teens or the low 20s. heading through into monday, again, we've got a bit more cloud and rain across the far northwest of the uk. but for the bulk of the country, it's another dry day and it's going to feel quite warm and more humid by this stage. so temperatures for central and southeastern areas, 27 degrees or so. i think we'll all be sitting in the 20s for a time. so this is how the jet stream is looking. it plunges towards the south, out to the west of the uk, and that's going to develop an area of low pressure, pushing it our way as we head on into tuesday. but before it gets there with that position of the jet stream, that's going to draw up some warm, humid airahead of any midweek rain. so for tuesday, we're likely to start off on a dry note. there'll still be some warm sunshine around, but you'll notice the blue colours developing as low pressure tries to creep its way in from the south and the west, i think. so that will keep things perhaps a little bit cooler across the north west of the uk. but we're still looking at temperatures in the mid, possibly the high 20s. but it does look like, as that kink in the jet stream moves its way across the uk, it will push this weather system, this frontal system, bringing some outbreaks of rain gradually from west to east. some uncertainty about the detail, the timing for this stage in the week. but i think wednesday could bring quite an unsettled sort of day with outbreaks of rain, perhaps some heavy showers in the mix, gradually just drifting their way northwards and eastwards. now, with that rain and a bit of change in wind direction, it won't be so warm across northern areas on wednesday. we could well still hold on to the heat down towards the south east. now, we're looking towards the end of next week now and low pressure looks like it starts to develop out towards the west, probably moving in across the uk. so although temperatures will still be reasonably warm for the time of year, you can see the yellow colours with us. that's the air mass. it could turn quite unsettled as that jet stream kinks towards the south and delivers us an area of low pressure. so, first half of the coming week, mostly dry, some warm sunshine, some rain moving into the north and the west through the middle part of the week. second half of next week from about thursday onwards, and this is the picture for our capital cities. turns a little bit cooler, a little bit more showery, but there'll still be some spells of warm sunshine in between any of those showers as well. and temperatures are going to be really fairly typical for the time of year. for most of us, we're looking at the high teens or low 20s. bye— bye. live from washington. this is bbc news. the un warns that more than a million people in war—torn gaza will face catastrophic levels of starvation byjuly. the number of heat—related deaths at the muslim hajj pilgrimage rises, as human welfare investigations begin. and the us supreme court upholds a law that restricts domestic abusers from owning guns. hello, i'm caitriona perry. you're very welcome. an israeli military strike in southern gaza has killed at least 25 civilians and injured 50 others — that's according to the palestinian red crescent. on friday, israeli forces fired at tents for displaced people in the designated humanitarian zone of al—mawasi, near the city of rafah. and the international committee of the red cross says its office in gaza — which is surrounded by hundreds of displaced people in tents — was damaged when heavy—calibre missiles landed nearby. the statement said "firing so dangerously close to humanitarian structures puts the lives of civilians and humanitarians at risk". it added that stray bullets have reached red cross facilities in recent weeks. israel says its troops were conducting �*precise, intelligence—based actions�* in the area, where an estimated half a million displaced palestinians are sheltering.