this is bbc news. the headlines: sri lankans continue to pour into the presidential palace demanding gotobaya rajapaksa resigns as he has promised. senior figures there say the president fled the island after the palace was overran but they expect him to return on wednesday. much of europe's experiencing a major heatwave. in spain, temperatures have hit 43 degrees celsius. the heat in neighbouring portugal has sparked wildfires, while there have also been temperatures nudging a0 degrees in france. here in the uk, the foreign secretary liz truss has become the latest senior party member to join the contest to succeed borisjohnson as conservative

leader and prime minister. ten other mps from the party have so far announced their intentions to run. those are the headlines. now on bbc news: click. this week we are at wimbledon to find out if ai can predict winners spencer was not concentrating on the most important parts of the event. here is my blanket desired. got to net here is my blanket desired. got to get the _ here is my blanket desired. got to get the food sorted first. lara — to get the food sorted first. lara on_ to get the food sorted first. lara on the first atomic fitness _ lara on the first atomic

fitness devices.- lara on the first atomic fitness devices. they say we run like an _ fitness devices. they say we run like an elephant. - fitness devices. they say we run like an elephant. is - fitness devices. they say we run like an elephant. is it. run like an elephant. is it true? probably. it's man versus machine as omar and paul kickoff the robots.- machine as omar and paul kickoff the robots. check out the tools _ kickoff the robots. check out the tools hoping _ kickoff the robots. check out the tools hoping to - kickoff the robots. check out the tools hoping to make - kickoff the robots. check out. the tools hoping to make sports more accessible. it’s the tools hoping to make sports more accessible.— more accessible. it's one of the biggest _ more accessible. it's one of the biggest events - more accessible. it's one of the biggest events on - more accessible. it's one of the biggest events on the i the biggest events on the sporting calendar. the players — powerful, light of foot, lightning fast. it requires physical endurance and nerves of steel. and that's the reason that every year, the crowds spill out to watch wimbledon. you see that there? that is centre court and it's been in that spot now for exactly 100 years. a centre court centenary. indeed! nice line.

i know how much you love wimbledon but are you like my aunt, who shouts at the tv for two weeks? i absolutely love it and i absolutely am like your aunt. this is the most stressful two weeks of the year for me. my heart rate goes through the roof and i'm just watching the thing on tv. oh, you need one of my activity trackers. i've got a few to spare to track your heart rate. ah, yes! how did you get on with those? well, i'll tell you — and you — about that in a bit. right you are. yeah, wimbledon has been at the forefront of trialling new tech, both on and off the court, and we've been lucky enough to see a fair bit of it over the years. so, there is no better place to anchor our sports tech—themed show. and we're going to start with something for the fans. tech giant ibm has partnered with wimbledon for more than 30 years and this year, it's upgraded the official wimbledon app to tell the future. so, for each singles match here, match insight is going to try and predict the outcome of that match, who's going to win, yeah? it is, indeed. it's using, of course, the players�* performance but it's also looking at what the media buzz is. we combine that with other stats, other data,

like the player tracking and ball tracking that hawk—eye are doing, players�* form, momentum, performance in the lead—up to and now during the championships. the brains behind this app belong to watson, ibm's artificial intelligence. and after absorbing all the data and the chatter, it'll make a prediction that's totally separate from the official seedings. these predictions are not going to just favour the person who's the highest ranked? no, and that's where it actually gets interesting because ours is very much of the moment. it's updated daily, so it enables us to suggest ones to watch. helpful if, like me, you really only know your rafas and your raducanus. but that's not going to stop me from using the app to make my own match prediction. ok, here we go — burridge versus tsurenko. ooh, blimey, that's uk versus ukraine. it's eurovision all over again. the trusted media, the experts, think that tsurenko is going to win. the fans predict that burridge is going to win — no surprise there. i think burridge has

a better chance, slightly, and watson says that tsurenko has a better chance. sighs i guess we'll see. now, sports like lawn tennis can seem like they're mainly aimed at older spectators which, of course, is nonsense — look at me, for example — but wimbledon has always tried to engage with younger audiences and this year, that means putting it in roblox. this is the first time that centre court has been built for digital tennis on the platform, which means its 5a million daily active users can knock up on the world—famous grass. nearly half of roblox users are under the age of 13, so this could catch young minds. you can still wander around wimbledon�*s fair hill on the official website. choose my blanket desired. businesses can complete daily challenges while

learning more about tournaments. i am wandering around. refreshments aren't included. wimbledon�*s digital fans appear slightly older than real—life ones. there is someone with an ice—cream on the head. right, so, earlier, i used the app to make a match prediction, and so did ibm's ai watson, and the results are now in, and... ah. well, i hope i didn'tjinx it, but tsurenkojust beat burridge 6—2, 6—3. which means that prediction i made earlier... yeah. watson is currently beating me i—o. and throughout the fortnight, that al should get even smarter because it's going to be reading all of the discussions and the media coverage about injuries, players�* health and their general performance, and that means we can do something quite exciting. now, i�*m filming this quite early in the wimbledon fortnight but we�*re putting the finishing touches to this programmejust before the singles semifinals, and that means that we can put on screen for you who watson thinks is going to

win those matches. i�*ve got no idea what you�*re looking at now, but by the time you watch this, you will know how it did. now, some might find apps like this a bit gimmicky, but if they can get fans of all ages engaging with tennis, well, that can only be a good thing in my book. omar is competing in a very different kind of tournament. every year about football teams from more than a0 countries compete in robocop. with different leagues for different types and sizes. this is the home of msl, the five—time

robocup champion from the ivanhoe university of technology. now, everyone knows how much of a football fan i am, so i can�*t wait to see how these little guys fare and also what kind of applications they can have outside of the sport. but first up, penalties. music: match of the day by barry stoller. 0h! oh—ho! oh, hey! i�*m not saving with the left hand any more. argh! a mirror helps these robots to see the pitch in 360 degrees... ..with cameras for object and colour recognition. so they see where the field lines are. right. and then relative to that, you can see, for example, the yellow ball, you can see a robot and then calculate where, absolutely on the field, their position.

wheels spin to pull in and hold the ball while a magnetised lever can launch shots at ten metres per second. we can move it up and down to give a lob shot or move it all the way up to give a flat pass over the ground. is it the case that you preload a certain tactic based upon your opponent, or is it that these bots just completely make up whatever they want as soon as they get on the field? we do prescribe them what we think are good strategies, but at the time during a match, they determine themselves what they should do. but we�*re also looking into using machine learning to find faults in the play and before we actually go on to the real field. at what point do you think that they probably would be ready at some time to face humans competitively? so, hopefully, we can use these robots to win from the human world champion in football in 2050. not too far away, then! we�*re going to give

it a go now, though. so i�*ve flown in a couple of people to help me out, namely paul carter. paul. i'm here, man. i'm here to save the day. cheering nice to meet you. paul, nice to meet you. how are you doing? omar laughs whistle blows i think the odds i are in our favour. i think we�*ll manage this as we have some good talent on the pitch. the bots kick off with some swift striking. oh, my...! that came out quick! oh, ho—ho—ho! oh—ho! only the goalie differs in form compared to the rest of the bots, as it

has extendable arms. but it couldn�*t stop sharpshooter carter. the robots communicate with each other up to 60 times a second, working together to pull some questionable moves. whistle blows but between fresh batteries and...bananas, i learned this isn�*tjust about man versus machine. robocup actually lays the foundations for serious collaborative robotics. integration of robots and humans within the same team remains limited nowadays. but if we look at the future, we will see more and more collaboration between robots and humans at team level. this type of set—up could allow us to develop techniques, methods, algorithms to make interaction meaningful. how difficult is it to transfer what they�*re doing as tasks into other robots from other industries?

easier than you think! really? yeah, i have a robot that needs to recognise balls on a field, and if i have a service robot, it needs to recognise faces in a home environment. they are both computer vision tasks and the methods that you use to address this task are more or less the same in two different contexts. the open source project has already helped inform this home health assistant, modifying with a handy gripper. paul laughs tech united branded cola. and after some refuelling, i did eventually find the back of the net. but given how fluid these robots are getting, it�*s good to know, in homes, work or play, we�*ll be on the same side together soon enough.

we did it. yeah, smashed it. the european parliament has approved two bills to strengthen the rule book for giants like meta and google including standards to tackle the spread of illegal content online with firms facing huge fines for violations. researchers in finland say this battery could crack the problem of how to store renewable energy long—term. the special ingredient is sand, storing heat, warming people�*s homes in winter. if we have some stations that were just there for a few hours and weeks in the wintertime, it will be extremely expensive. if we have solutions providing flexibility for the storage of hate, heat, that would help a lot. a ukrainian tech start—up has started its metaverse

educational platform despite having to staff move out of the country due to the war. they will use the platform as a virtual classroom offering training in tech skills. silicon valley firm mojo vision says it has completed the first successful on—eye demonstration of a smart contact lens. the prototype contains a micro led display that the wearer controls with eye movement but the biggest challenges is making sure the power and communication work wirelessly when it is actually on an eye. several years back, i tested what were then four of the leading activity trackers. even though i�*m wearing them all, all the time, they don�*t have the same view of how many footsteps i�*ve taken. so i decided it was time to put some of the latest devices to the test to see how they fare. i have the apple series 7 watch, the fitbit sense, and the oura third—generation ring.

i�*m going to focus on steps, sleep and calories. but of course, devices can do so much more now — measuring heart rate, temperature, taking ecgs and judging how stressed or ready for the day they think we are. it�*s day one. last night, i slept with the devices on. i thought the two smartwatches were going to feel a bit bulky but actually, i slept really well. i didn�*t even notice them. it�*s too early for me to think too much about the data, but already throughout the day today, there has been quite a difference in the number of steps that the apple watch and fitbit think i�*ve done. the apple watch thinks i�*ve done fewer, and this does seem to be a bit of a theme with people that i know who wear both the devices. so, let�*s see how that plays out throughout the week. i knew that my husband�*s fitbit was counting too many steps! i even swapped the apple watch to my dominant wrist and changed the settings suitably. it did slightly reduce the discrepancy, but the fitbit and the oura were still a bit more generous on step count. it�*s day three now and i�*d like to talk about sleep.

the oura ring seems to think that i�*ve had a similar amount of sleep to the fitbit — just about a ten or is—minute difference. but the apple watch thinks i�*ve had nearly an hour less, so there is quite a substantial difference in count there. similarly, the oura ring thinks that i�*ve done the same amount of activity as the fitbit. it�*s the apple watch that thinks that i�*ve been a bit lazier. all three of the devices break down your sleep quality. the fitbit�*s timing and scoring on deep and rem sleep, as well as your level of restoration, were really clearly presented. but the oura took this to another level, warning me to pay attention and adding a sleep score. apple tracks all of this too, but digging out the data retrospectively did feel more effort. it�*s day five now and i definitely feel like i need to do more activity than usual because you�*re watching! but the results do seem a little bit more consistent between devices than the last time i did this experiment

about seven years ago. i�*ve put all my data so far on a spreadsheet, so i�*m really able to compare them, and the thing which is particularly similar is the number of calories burned. really, the differences between them on each device is pretty negligible, even if sleep and steps do vary a little bit more. and one thing i�*m rather enjoying is the readiness score that the oura ring gives me. it�*s based on all of that data and effectively just tells you how much energy you�*re likely to have, but it seems pretty realistic. and by the end of the week, the data told the story that sensors have improved over the years, as have the algorithms. seven years back, there was a difference of 3,000 calories between devices at the end of the week. here, the difference was more of a bowl of cereal, rather than a whole packet of it, and i am assuming that if they all say something similar, that that is pretty accurate. overall, the fitbit counted around a% more steps than the apple watch. and the oura ring, another i%

to 2% on top of that. the sleep data had varied between devices. adding it all up over the course of a week, there was a two hour, 17 minute discrepancy between the fitbit and the oura, with apple somewhere in between. the fitbit sense�*s electrodermal sensor is checking for even the tiniest bit of a sweaty palm to provide data that contributes to a daily stress score. it correctly — yes, correctly! — found me to be very calm. meanwhile, the apple watch is keen to tell me every time that i need to breathe when i may knowingly feel a little bit flustered. this time around, i�*ve come away from the experiment feeling a little bit different. instead of it being a question of are they accurate or not, it�*s more a matter of which device would you rather wear? it�*s definitely easy to track your sleep in a ring, whereas if you want to see your data throughout the day, well, i personally like to be able to look at my wrist, rather than my phone for it.

the apple watch, well, it�*s a perfect player in the prism that is the apple ecosystem, so if you use apple, well, it fits very well with that. but i can�*t really knock the interface on the fitbit. but not all wearable trackers are where you think they�*d be. more later for those who want some more in—depth analysis on their steps and their step. but for now, here�*s paul, who�*s been exploring body tracking for everyone. beyond wristbands and wearables, artificial intelligence is often now used to also help athletes understand and improve their game. and in london, one start—up has developed a smartphone app to make this kind of training more inclusive. can you tell me a little bit about what teamsportz is and what it is that you do? i grew up playing basketball in a very deprived environment, so i build a technology for anywhere else in the world

where you might have very limited access to technology. training is for individuals and teams, using artificial intelligence to detect disabled and non—disabled users. where are your arms, where are your legs, and where is your torso? and if you don�*t have the arms or the legs or the movement on those limbs or whatever it might be, the model will still be able to render a human body. movements are then interpreted as activities like squats or push—ups. you don�*t suffer from the same bias that al often brings. so i guess the big question is, do you reckon the system will be able to track me? i�*m confident that it will. look at that! it�*s got me! yeah. i didn�*t think it would. helpfully, the app can link to a big screen. so, those targets will appear randomly, so you can�*t guess where they are, so you actually have to exercise. god, i wish i could — i am so unfit! the skeleton overlay, over your body, that�*s

the a! model. i don�*t think it�*s having to work too hard to know i�*m going not very fast at the minute. rep counts, speeds and scores can be shared to gamify the experience, with new possibilities for schools, too. for the first time, they can give homework to kids to do it at home. kids across this country are going to love you! laughter. wheelchair user karina has been testing the app in exercise sessions with disability sports uk. cheering. go, karina! a music lover, karina certainly has the moves, though i�*m not sure we agreed on everything. laughter. coach emma�*s classes combine all kinds of movement, dance and ball activities with this new technology, and settings can be adjusted to suit each person�*s motor or cognitive needs. a lot of members, when they first come,

are quite in their shell and not very confident, but using that technology, we could see even playing it or having a go at it a couple of times, actually how it improved. and with hopes for this to roll out to more clubs and members at home, it�*s notjust about bringing physical games. honestly, different things like this that our members get a chance to have a go at really makes a big difference just to their overall outlook and their belief in what they can achieve. everyone needs that human connection as well. you�*ve got a mixture of both that, i think that�*s, yeah, that�*s the ideal. technologies like the ones seen today aren�*t the answer for everyone, but for disabled people who traditionally have been excluded from access to sports and fitness, the benefits are obvious. if it can get me off the sofa, it�*s doing something right! and the class does seem to think so, too. we want more of this one day, i hope. when you try hard, you can keep getting

better, better, better. lovely to see everyone getting involved. meanwhile... now, i�*m a keen runner but i�*m not particularly good orfast — although i have been running about 5k five or six times a week for the last two decades. the issue is, though, if anybody runs with me, they do say that i run like an elephant. the question is, is it true? these nurvv running insoles aim to prevent injury and improve performance by tracking how your feet touch down. with 32 sensors, your power, step length, pronation — that�*s the way your foot rolls inwards — training load and more are being measured. any runner knows the importance of wearing the right trainers, so i always wear ones for over—pronation because that�*s what i was told i needed,

and i thought that they�*d level things out. but it seems that i�*m still a bit wonky. the app confirmed, if not overstated, how absolutely awful my balance and foot—roll are, whereas it suggested my cadence — the number of steps i take per minute — is a lot better. the app also provides real—time data through your phone or a smartwatch, and i discovered that when i�*m running outside, i�*m always in the challenging or extreme zone, whereas i�*m never close to that on the treadmill. so, i guess i�*ve discovered that i need to work a bit harder indoors. i was more interested in the post—exercise data, though, but can i really change the way i run? like other foot—worn running trackers out there, the data is useful, and these ones were surprisingly comfortable to wear, and the results do come with some tips for better running and fewer injuries. but when it comes to improving style, even when making a concerted effort, the moment i get evenjust a little bit weary, the elephant is back

in the room, or on the running track, straight away. can ijust say, doesn�*t run like an elephant. that�*s not what an elephant running looks like. no, but it�*s not about what it looks like, it�*s the risk of injury. if you don�*t run properly, you�*re going to hurt yourself. i see, right. meanwhile, iavoid running injuries by not running. shall we leave it there? yes! that�*s it from wimbledon. thanks for watching. we�*ll be back next week. bye. bye— bye. hello. sunday, scotland and northern ireland saw their highest temperatures of the year so far. monday could well be the turn of wales and england, so feeling just as hot out there, if not hotter. and a lot of sunshine, yes,

though increasing high cloud will turn things hazier out there. and if you�*re looking for rain, this is the next five days. while some will push in towards north—western areas — not very much, mind you — but where temperatures are at their highest for the next couple of days at least, well, it will stay mainly dry, just exacerbating the very dry conditions out there with high pressure close by. although some changes from low pressure, slowly, as we go through the next few days. a lot of sunshine as monday begins, temperatures rocketing. misty, low cloud just pulling away from some irish sea coasts. an increase in high cloud from the north, again, turning things hazier out there and temperatures widely into the upper 20s from eastern scotland through wales. a large swathe of england 30 or above, maybe 33 in south east england. strong sunshine, high, very high uv levels. cooler sea breezes around the coast. going into monday night, look at the change for northern ireland and scotland from that low pressure system i showed you — we see some outbreaks of rain moving in. ahead of all of that, though, it will be a much warmer night going into tuesday, and that does make it tougherfor sleeping. the house really doesn�*t

want to cool down after it�*s been so hot during the day. well, slowly, we take some outbreaks of rain away from scotland and northern ireland on tuesday, where it�*ll be cooler, fresher, brightening up. the chance of a shower. breezier, too. thicker cloud with maybe the odd splash of rain working into parts of wales and england, bringing temperatures down a little — though still for east anglia and the south—east into the low 30s, with for london, for example, a heatwave continuing to be throughout the week and into next weekend, whereas elsewhere, it will cool off a touch. wednesday brings temperatures much closer to average, particularly across northern areas of the uk. some patches of cloud. the chance of a few showers around. for many, though, it�*ll be staying dry. still into the upper 20s in south east england. for most locations, though, well shy of that at this stage — and, thankfully, if you�*re not a fan of the heat. looking further ahead, whilst scotland and northern ireland are no great change, wales and england heat up again — look at that temperature potentially for london into next weekend. i just want to show you the uk high temperature record. there is a concern that this will come under threat next

weekend — not a guarantee, but there�*s a potential for some extreme heat to build in across southern areas next weekend — and that�*s certainly something we are watching.

hello. welcome to bbc news. i�*m david eades. our top stories: senior figures in sri lanka say the president ha fled the island but is expected to resign on wednesday. his palace is now a protest site as crowds continue to pour inside. our correspondent is there. after months of frustration, this feels like the release. crowds are surging through the doors to get inside this presidential palace and get a peek at what life is like for sri lanka�*s political class. to enjoy or endure. a heatwave hits western europe. parts of spain reach a3 degrees. ii and counting. here in the uk, candidates are lining up in their bid to take over from borisjohnson as leader of the conservative party and prime minister.