hello this is bbc news. the headlines... jack charlton, who played in england's world cup winning football team and later managed the republic of ireland, has died at the age of 85. another one of the ‘66 world cup squad to have died. but, you know, he will obviously be remembered very fondly. he was a great character. open air theatres, live music venues and swimming pools can re—open today, in the latest easing of the lockdown in england.

labour calls for the uk government to clarify its position on face coverings, after the prime minister said a stricter approach was needed in england. critics condemn president trump after he spared his former adviser from jail. roger stone had been sentenced to a0 months for obstruction and lying to congress. bosnia marks the 25th anniversary of the srebrenica massacre, in which 8,000 bosnian muslim men and boys were murdered. now on bbc news, click. this week: healing without hospitals. building an e—bike. and would you trust an alto keep you fit? that looks exhausting.

welcome to click, hope you are doing 0k. last week lara ventured into her garden. this week we have both been let loose into the outside world. how was it for you? it was great, i have been on an electric bike and i managed to not fall off, unlike last time. how was it for you? i have to say, i really enjoyed filming out and about again. we have both done this bike then, which you will see later in the programme. one other thing i have done this week is i have been to a comedy gig online, which was really funny. good thing is that the front row of the audience, if you like, had their mics alive throughout so you could hear some of the laughter which really helped,

and i really enjoyed it. that sounds great, and who would want to be on the front row of a comedy gig normally? no, not me. as we start to move toward some sort of sense of normality, one of the things that was delayed during lockdown was elective surgery. in england the nhs had to free up 12,000 beds for covid—i9 patients. and that meant the delay of 2 million operations. it means that people are waiting to get surgeries like joint replacements, and have been left in pain, and the nhs itself has been left with a huge backlog of surgeries that could reach 10 million by christmas. so how is that going to happen and what can people do while they are waiting? here is jen copestake. trying to be the fittest old—age pensioner in the country.

80—year—old brian lewis has been waiting for a hip replacement in his home near manchester since the lockdown began. like millions of others brian was on the list for elective surgery before coronavirus, but since march everything is on hold. he could cope with the pain for a few months and has been doing zoom calls with his physiotherapist but is now finding it very difficult. it has completely from here to there, the pain hasjust been in the hip and now it is the whole leg. i have these muscles in my leg that can't move. i have always been a very fit guy, you know, but... this excruciating pain. i have reached the stage now where deterioration has been so great and the last three weeks i have been put onto a stick. doctors around the country are looking at ways they can remotely assist the thousands of patients that are waiting forjoint surgeries. this includes the creation of new apps and tools that can monitor them in new detailed ways. welcome to our lab. whoever you are, wherever you are. this free app provides free access

to some of the orthopaedic therapies and expecting could have in person. downloading this app is a great way to recover from your surgery. it is part of a service that allows surgeons to monitor their patients at home. the coronavirus pandemic has accelerated the team's work to design more advanced ways to generate useful patient data for doctors. these are infrared cameras, and they are all tracking, regulating these dots. so these are typically used in the computer game industry or the film industry. using datasets from analysis labs around the world, they are training algorithms on millions of data points to create a new camera system that could one day be used with a simple smartphone camera connected to the internet. this could recreate the sophistication of a fully fledged gait analysis lab in anyone‘s pocket, and enable a surgeon the ability to confidently assess a range of motion in the patient‘s near post surgery

without anyone having to leave home. to create the algorithm it has to be on someone‘s phone, it has to be small and unique and quick, but to make that algorithm we have to process a lot of data over a lot of years. because of the vast amounts of training the algorithm has gone through it can accurately identify the anatomy and range of movement to a degree similar to wearing a morph suit in an expensive lab. we are particularly interested in human motion capture, so we have taken lots of inspiration from the gaming world. what we do is a very accurate version of this using artificial intelligence to accurately measurejoint function. so for a surgeon, can this technology through a smartphone camera tell a surgeon if that patient‘s leg is straight after surgery? one of the hospitals advocating the use of these tools is in wrightington. birthplace of the modern hip replacement, the team here want to see more daycare surgeries to shorten the time people spend in hospital

and clear the backlog. there is an app in development, a specific version to support the day case patients. you can bottle information that may get a lot of information just by talking but in some cases you have to have a lot of examination, some system to be able to measure the range of movement of a joint, accurately, which would be of benefit. artificial intelligence could be used in other ways to clear the backlog of cases. c2 ai, an approved user of the nhs dataset is aiming to prioritise patients based on their operative risk in order to rank them in order of priority. they have identified 14 key variables that correlate the risk of mortality and will be able to look at the whole country's surgical backlog at once. we have a version of this

where we can upload the full elective surgery list in one cope we can see everybody against everybody. if you had a patient, would some people feel neglected if it ai is doing this? people would want to know there is a logic to it. if they are waiting behind people it is because they have a greater need. rather than being done in an inefficient manner, it is being done with a reason. there are large numbers of people on the list with comorbidities, which might and they are higher risk. artificial intelligence could be used to scan that data and come up with a list of patients that fit a certain category, a certain priority, rather than, you know, having to go through that all clinicians having to go through all that data to try and prioritise patients. i think the algorithm could be more sensitive and useful than somebody, because they will do the pain thing, one to ten, the old—fashioned thing. whereas the algorithm can take so many other things into account that a human being can't. brian and millions of other patients who signed up to elective surgery still have months to wait, but using patient data and powerful

computing systems can help the process and get them in and out of hospital faster. hello and welcome to the week in tech. this is the week in which a ag internet balloon service from google was finally launched in kenya. it was announced two years ago and has been fast tracked now to keep people connected during the pandemic. facebook was heavily criticised in its own civil rights audit. the audit called on facebook to do more to tackle organised hate against minorities and religious groups. the social network said it would make some but not all of the changes recommended. a new video codec was revealed that could put an end to... this, basically. companies including apple, microsoft and huawei have worked on the h.266 codec which uses half as much data per video as its predecessor, so you can watch twice as many videos

before your phone gets full. if you have had enough of video calls, meetings and catchups. in microsoft teams, together mode cuts everybody out of their video and put them in a virtual room. microsoft says it makes video calls feel more natural. light upgrades have been used to promote social distancing in south korea. 300 drones were used in this display above soul which reminded people to wear a mask, wash their hands and included message of thanks to key workers. it was not advertised in advance to avoid drawing a big crowd. here in the uk, things are opening up. but we are still being told to only get public transport when it is essential. and that has led to a surge in sales of e—bikes. the leap has been unprecedented. in may as an example we sold more bikes than we did

in the entire year in 2018. a decent e—bike can easily cost well over £1000. and there are hundreds of brands to choose from. but the vast majority of them run on tech from just one manufacturer. the number of bosch powered electric bikes in the uk would be somewhere between 60%. but the difference between e—bikes is how they are powered. some have helped drive motors which track your pedal rotations and power the wheels. today though i am using an even smarter crank drive bike. this uses a torque sensor to respond to how hard i pressed the pedals, and this monster of a battery means it can ride up to 100 miles, not that i am planning on going that far. i have got my high—vis, i have my hat and i have my bike, let's go. i can feel the power.

this suddenly feels so large, i can't believe i am going uphill. hitting 15.5 mph, that is the legal speed limit for e—bikes in the uk, was pretty effortless too. some countries do have higher speed limits for pedal assist bikes, but if you have seen cyclists putting in zero legwork at all, they are likely to be using a throttle system. these are less common and in most eu countries you need special registration and insurance to ride them legally. i was excited about the fact that this could go faster but i didn't think i would have the confidence to do it. actually once i got going the weight of it made me feel so much more confident. why do they have to speed limit it? but all this comes a price tag. £4,706. pretty shocking, really.

spencer has been looking at a far cheaper solution. you might like the idea of a e—bike but you may only have a perfectly nice bike already. the good news is you can retrofit your bike to make it electric using a conversion kit like this. switch is a new front wheel with a 250 watts motor in the middle. it also comes with a power pack and a pedal sensor. this isn't cheap, but it is cheaper than our e—bike and the price you pay is also your time, which will be dependent on how confident you are with taking off wheels, tires and brake discs. if you think you are going to get stuck then you can pre—book a support video call. obviously i only called them to generate the service, and not because i am a completely clueless dingbat. switch say they will make these kids to fit any size of bike, basically you discuss with them what you need and they will build the wheel to order. and there is a special adaptor for a folding bike like this one. it is a bit fiddly, but to be honest

i did find it perfectly manageable, and that is saying something because it is me. a tyre and a new wheel. e—bikes use a crank driven system. this is a hub driven system. this magnetic sensor monitors how fast the pedals go around and then it takes that into account along with things like acceleration to try and work out how much power to deliver. it is not quite as seamless and experience but is a lot cheaper and a lot lighter. but you do have to accept that they will be some extra cables on your frame up to this, and a power pack attached to the handlebars. assuming that won't upset your chi or your aerodynamics too much, you switch it on, select your power assist level and you are ready to go. first — pleasant surprise, it wasn't a complete disaster. being a total novice i did expect it to be harder than it was.

secondly, it is outrageously fast. i can't actually have it on the highest setting, not on the flats, it is just too fast. i hardly touch the pedals and i am away. the only thing is that the power assistance doesn't always behave itself. sometimes cutting out when i needed, and sometimes kicking in when i am not even pedalling. switch say the problem is most likely the pedals and so not being perfectly aligned, and in fact a new design of sensor is going to be available in a few weeks. if you do want to return your bike to a normal, non—electric, you can take the power pack of which will leave it only about one kilogram heavier than it was before. although i think that is enough exercise for one lockdown, don't you? you tested premade e—bikes before, how did this compare? i have to be honest, i know it is the more expensive option but i do prefer the system

that looks at how hard you are pedalling and applies power accordingly, rather than the system which looks at how fast your pedal are growing around and having a guess, albeit a good guess at how much power to apply. the system is cheaper, so, you know, it is your money, take your choice. in the spending may not stop atjust the bike. for lockdown simon hancock put to the test some of the latest cycling gadgets. with public transport, shall we say, not as attractive as it used to be, the bike has become the favoured way for a whole new wave of cyclists to get around town. but be you first—timer, or old—timer, safety will remain a major worry. surprise surprise, our old friend technology has a few gadgets which claim to help. take this, garmin‘s varia bike light — it's half light, half radar. it's a really simple idea,

you have your phone or your bike computer strapped to your handlebars like this, and the radar here, as a car approaches behind you, gives you a visual and audio indication that it's doing so. now, the question may be whether or not that is a good substitute for listening with your ears, but it's an extra bit of awareness as to what is going on around you. but you might also, when you are buying one of these, you may have to take into account that it cost 170£. some much needed reassurance or a classic bit of tech overdesign — you decide. it's notjust bike lights that are going smart of course. there are also smart helmets or smart airbags as the hovding likes to describe itself. put it over your head, zip it up and then activate it. and now, as i'm cycling along, if i have an accident and fall off, it will sense that and it will inflate to protect my head. we've had this on the programme a few times before but this is the latest generation and comes

with an app — of course it does. we'll be able to collect data off the life of everyday cyclists in the tens of thousands of hours and provide that to cities around the world who are looking for ways to improve the safety of cyclists in their city. cycling accessories getting connected is a big trend and bringing them all online opens up some interesting possibilities. this is the see.sense light — it came out of a kickstarter campaign and what sets it apart from a standard light is that it's smart. the light uses an accelerometer to monitor the environment up to 800 times a second. the type of data we are bringing into that analysis is things like the condition of the road, the orientation of other cyclists, the cadence, the speed, the breaking. what this means is that the lights do some clever things while you're cycling. 0n the front light, as you're going around a corner, they seem to flash at a different speed.

and with the back light, as you slow down, it acts more like a brake light than a traditional bike light. if you pair the light with a phone, the user gets some extra features. if you have got one on your bike and you go and get a coffee somewhere and leave your bike outside and someone tries to make off with it. you get an instant alert with your phone, which can be quite useful. in exchange, your cycling data is uploaded to the cloud so see.sense can analyse how people are cycling. 0ne place that has been experimenting with this is the city of london. there are some really interesting examples that have come out of this already. 0ne tells us which bridges people are using, where this data is showing for example, on london bridge compared to suffolk bridge, the user experience may be less good because on suffolk bridge there is a better cycling experience in terms of breaking and less swerving which could indicate a propensity for accidents.

data helps politicians justify logical decisions because they can show that they are logical and it helps planners make decisions. if you measure where cyclists go now using see.sense lights or apps or watches, whatever it is they use, they are measuring what they are doing now so you can't go, well, that's where they want to go so i'll build infrastructure that protects people who go there. they might be going there because the place they want to go is a two—lane motorway and they just can't. a careful interpretation of the data is as critical as gathering it. the humble bike light then has turned bike accessory makers first into tech companies and now into data analysts. all cyclists will care about is that some of this will now genuinely help make the streets of our cities safer to ride. that was simon. it might be that you can't get on a bike where you are, maybe you're just not ready to get out and about yet. but you can still get fit on an exercise bike and lara can help you. the things i do for this programme.

i have been doing some high intensity interval training, a spot of hiit. are you into that, spencer? this is when you do incredibly short bursts of insanely intense exercise. it's horrible. the exercise finishes quicker though. then you collapse? hopefully not. i've been testing an ai bike called car.0.l that is based on the concept of doing two sets of 20 seconds going at full intensity amidst an 8—minute gentler cycle will give you the benefits of a 45—minute run. no sweating needed. it replicates what is known as laboratory hit — high intensity interval training that would usually be carried out in a lab with scientists. they will be able to look at your data and understand your fat—muscle balance creating a personalised formula and the resistance that you need.

here, the ai becomes the scientist. a few setup rides evaluating your physiology before optimising the work—out for you. it's not about how long you spend exercising, it's not about volume, how much you sweat is not linked to effectiveness. the way exercise works is what it does to you at a molecular level. it is hard to keep going as hard as you can for the 20 seconds. as soon as it's over, it's really easy again, it feels like it was absolutely pathetic. what you're trying to achieve is something called rapid glycogen depletion. and that only happens when you hit your maximum power that you are literally capable of. we will know if you hit super maximum or not based on the amount of time you have held your peak power for. it's impossible to hold it for more than a fraction of a second. i am no scientist so all i can do

is tell you how i felt. and even though i am sure my heart rate has been pushed to the right limits, i was certainly going as hard as i could for those 20 second bursts. i still didn't feel like i had done a work—out afterwards. so each time i did this, i went for a good run after. ok, so this didn't fulfil my work—out desires but there is some science to the 20 second bursts. you only have to look at world athletics records to back up the idea that the body's ability to maintain maximum power deteriorates after the first 20 seconds of pushing to the limit. no matter who you are. the average pace maintained for 100 and 200 metres cannot be continued for sprints that are longer than 20 seconds. so for car.0.l, this means that the user is going to do the bits that they will work the hardest at and get the greatest benefit from, and the rest is pretty easy.

even if you only repeated it say, four to six times, over the course of a couple of weeks, you can see improvements in fitness that are kind of equivalent to what you would get with much longer, typical endurance, continuous training. it tends to have a clearer effect on the heart and circulation system. as an example, this won't help you lose weight. weight loss with exercise about energy expenditure. wow, i have found a whole other side to car.0.l. 60, 8—second sprints in 20 minutes and i have never worked out like it. ok, let's do this! speed up, sprint! the only thing that did disappoint me a little bit though was that the ai works based on your last work—out rather than in real time. if you're feeling a bit tired, it's not really going to respond to that. i can't deny being pushed

to my limits though, and in the longer term, the aim is for the al to be able to react better in the moment, maybe telling you just by holding onto the handlebars that you're too tired today. i guess we can only hope. do you need much more? we just need a few more shots, lara. can you paddle full pelt again? stop it, i have been working so hard on that bike for weeks! the things you do, like you say. that is it for this week. ifeel like i need a lie down after watching that. you need a lie down? you can keep track on the team throughout the week on facebook, youtube, instagram and twitter at bbc click. thanks for watching and we will see you soon. buh—bye!

hello. how weather prospects are fairly straightforward for this weekend. there is a lot of dry weather to come across the uk. most of us will see some decent sunshine, temperatures will struggle a little in comparison to where they should be for this time of year. this area of high pressure is with us through saturday on into sunday but this low will try and 2% of the north—west of the uk later on on sunday so it will be more cloudy and may be some rain for three sunday evening. this evening, some patchy cloud to the north of the uk. elsewhere, clear skies. as we move into the small hours of sunday, the cloud of the north keeps temperatures in double figures. to the south, bit like early saturday, our figures will slide down into perhaps four or

five, but rural parts of wales and through the midlands and into parts of 0xfordshire. sunday, a lot of sunshine for england and wales, best of the sunshine for northern ireland and scotland first thing. the front approaches northern ireland three sunday afternoon will see thickening afternoon cloud. 19, 20, to the north of the uk, perhaps 23, 2a to the south—east. another great day for the final day of the first test in the hampton, after all of that cloud and murk as we start to the test, sunshine from dawn till dusk basically, on sunday. 0n into the week ahead in the forecast becomes a little bit more challenging. we keep the low to the north of the uk, critically high to the south but where the boundary between the two sets, it is proving difficult for us to pin down at the moment. monday, it looks like it will see a weather front sinking further south, bringing greater chance of showers to england and wales though eastern

areas may well remain dry. is it further on into the week ahead and you can see still that trend for a high to try and cling on to the south up front to try and run into the north and as i said, did isjust where the boundary sets it will be how to pin down. the further north you are, the greater your chances are of being lumbered with more persistent cloud and may be seeing some rain. to the south, it looks like it should be dry, some signs of warmth returning for the end of the week.

this is bbc news the headlines at four jack charlton — who played in england's world cup winning football team and later managed the republic of ireland — has died at the age of 85. another one of the 66 world cup squad to have died. but you know, he will obviously be remembered very fondly. he was a great character. critics condemn president trump after he spared his former adviser from jail. roger stone had been sentenced to a0 months for obstruction and lying to congress. 0pen air theatres, live music venues and swimming pools can re—open today, in the latest easing of the lockdown in england. labour calls for the uk government to clarify its position on face coverings, after the prime minister said a ‘stricter‘ approach