this is bbc news, the headlines: the world health organization has reported a record daily total of global coronavirus infections, and nowhere has been hit harder than america. the country's top health official for infectious diseases, now says some us states, should delay ending their lockdowns. now says some us states, should delay ending their lockdowns. arizona reported 65,000 coronavirus cases in a single day. president trump has commuted the ao—month prison sentence of his longtime ally roger stone. he was convicted of lying to congress, tampering with a witness and obstructing the house investigation into whether the trump campaign conspired with russia in the 2016 election. as face coverings become mandatory in shops in scotland, prime minister borisjohnson hints england could face similar measures. at the moment they're only mandatory on public transport, but the prime minister says the scientific advice on masks has shifted. now on bbc news, click.

this week: healing without hospitals. building on a bike. —— and e—bike. and would you trust an ai and e—bike. and would you trust an alto and e—bike. and would you trust an al to 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?”

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. 0ne 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 wa nt to 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 not surgery. in england the nhs had to free up 12,000 beds for covid—19 patients. and that meant the delay of 2 million operations. it means that people are waiting to see just like joint replacements 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 isjen cope sta ke. they are waiting? here isjen cope stake. trying to be the fittest old—age pensioner in the country. eight—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. here has completely from here to there, the pain hasjust beenin 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 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, ways. welcome to our lab. whoever you are , wherever ways. welcome to our lab. whoever you are, wherever you are. this free app provides free access to some of the orthopaedic surgeons —— surgeries and expecting could have in person. downloading this app is a great way to make recovery from your surgery. great way to make recovery 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 of 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 labs in anyone's pocket, and unable to surgeon in anyone's pocket, and unable to 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 measure joint 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 spendin 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. see two 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 1a 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 electric surgery list in one cope we can see everybody against everybody. —— elective surgery. 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 people of the —— 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 painting, one to ten, the old—fashioned thing —— pain thing. whereas the algorithm can ta ke thing. whereas the algorithm can take so many other things into account that a human being can't. 0ther account that a human being can't. other patients signed up to elective surgery other patients 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. —— brian process and get them in and out of hospitalfaster. —— brian on millions of other patients. hello and welcome to the week in tech. this is the week about a ag internet loom service —— berlin service from google was finally lodged in tanya —— and you. it was announced two yea rs —— and you. 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 augur —— audit. the audit called on facebook to be more to tackle organised hate against minorities and religious groups. the social networks that 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 use twice as many videos before your phone gets full. if you have had enough of video calls, meetings and touchups. 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 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. 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.. 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 number of —— 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 wheels. today though i am using an even smarter crank 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.|j have got my hive is, i have my hat andi have got my hive is, i have my hat and i have my bike, let's go. have got my hive is, i have my hat and i have my bike, let's golj have got my hive is, 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 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 to be using a throttle system. these a re less 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 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 be limited? but all this comes a pricetag. £a706. it is 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 powerpack and a pedal sensor. this isn't cheap, but it is cheaper than oure—bike and the 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. 0bviously

i only called them to generate the service, and not because i am a com pletely 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 thatis find it perfectly manageable, and that is saying something because it is me. attire and a new will. 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 ta kes 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 ca bles accept that they will be some extra cables on your frame up to this, and a powerpack 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 habit 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 a lwa ys 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 paddling. switch say the problem is most likely the pedals and so not being perfectly aligned, and so not being perfectly aligned, and infact 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 toa weeks. if you do want to return your bike to a normal, non—electric, you can take the powerpack 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? wheee! 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 gas, 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, old—timer, safety will remain the major worry. surprise surprise, our old friends technology has a few gadgets which claim to help. take this, government's barrier bike light, half—light, half radar. it's a really simple idea, you have your phone or your bike instructs your handlebars like this and the radar here, as a car approaches behind you, gives you a visual and audio indication that it is doing so. now, the question may be whether or not thatis the question may be whether or not that is a good substitute to listening with your ears, but it is 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 pounds. some much needed reassurance or a classic head of technology over you decide. it is notjust like lights that are going smart of course. there are also smart helmets or smart airbags. put over your head,

zip it up and then activated. and now, as i'm cycling along, if i have an accident and fall off, it will sense that an inflated to protect my head. we've had this on the programme a few times before. this is the latest generation and comes with an app. 0f is the latest generation and comes with an app. of course it does. will be able to collect data of the lack of everyday cyclists in the tens of thousands of hours and provide that two cities around the world who are looking for ways to improve the safety of cyclists in the city. cycling accessories getting connected is a big trend now and ringing them all online opens up some interesting possibilities. this is an idea that came out of a kick starter campaign and what set it's a pa rt starter campaign and what set it's a part from a standard light is that it is smart. the light uses an excel aroma not to monitor the environment up aroma not to monitor the environment up to aroma not to monitor the environment uptoa aroma not to monitor the environment up to a hundred times a second. the time 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, you are going around a corner, they seem to flush at a different speed. and with the back light, you slow down and it a cts the back light, you slow down and it acts more like a brake light than a traditional white. acts more like a brake light than a traditionalwhite. repair acts more like a brake light than a traditional white. repair the light with a phone, using it some extra features. if you have got one on your bike and you go and get a copy 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. 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 interesting exa m ples of london. there are interesting examples that come out of this already. 0ne tells us which widgets people are using. for example, on

london bridge, the user experience may be less good because on the other 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, you can see apps or watches or whatever it is you use, they are measuring what they are doing now so you can't go, but is when they want to go so build infrastructure that protects people go there. it might be going there because the place they want to go is a two lane motorway and i discount. a careful interpretation of the data is as critical as covering it. the humble bike light then has turned bike accessory makers first into tech companies and now into data a nalysts. tech companies and now into data analysts. all cyclist that some of this will now generally 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 you. 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 hit, are you into that, spencer? this is when you do incredibly short bursts of ink tamely intense exercise. it is horrible. the exercise finishes quicker though. the new collapse? hopefully not. i've been testing an ai bike that is based on the concept of doing two sets of 20 seconds going at full intensity compared to a gentler cycle will give you the benefits of a a5 minute run. no sweating it 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 resistance that you need. here, the ai becomes the scientist. a few setup rides evaluating your physiology before optimising the workout 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 is over, it's really easy again, it feels like it was prophetic. what you're trying to 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 capable of. we will know if you hit super maximum or 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 is impossible to hold it for more than a fraction of a second. i am no scientist so i can do is tell how i felt. and even though i am sure my heart rate has been pushed to the right limits, i was certainly going aside as i could for those 22nd bursts. i still didn't feel like i had done a workout afterwards. each time i did this, i went for a good run after. this didn't fulfil my workout desires but there is some science to the 22nd 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. the matter who you. the average pace

maintained for when hundred and 200 metres cannot be continued for sprints that are longer than 20 seconds. so for carol, —— car.0.l, this means that the user is going to do the best that they will work the ha rd est do the best that they will work the hardest that and get the greatest benefit from. and the rest is pretty easy. even if you were only repeated say, four to six times. 0ver easy. even if you were only repeated 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 interests, continuous training —— insurance. as an example, this won't help you lose weight. weight loss with exercises about energy expenditure. wow, i have found a whole other side to car.0.l. 60, eight second sprints in 20 minutes andi eight second sprints in 20 minutes and i have never worked out like it. 0k, and i have never worked out like it. ok, let's do this! speed up, sprint!

the only thing that didn't disappoint me a little bit though was that the ai works based on your last workout rather than in real time. if you're feeling a bit tired, it's 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 ai my limits though and in the longer term, the aim is for the al to be able to react better in the moment, may be telling you just by holding onto the handlebars that you are too tired today. i guess we can only hope. do you need much more? wejust 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. i feel like i like you say. that is it for this week. ifeel like i need a lie down after watching a. you need a lie down? you can keep track on the team

throughout the week on facebook, youtube, instagram and twitter at bbc click. banks are watching and we will see you soon. goodbye! -- thanks. hello. if you were hoping to stay dry during friday, in many parts of the uk, the weather had a different idea. there were some heavy downpours to be dodged, and actually, over the last few days, you can see on the satellite picture all these different clumps of cloud that have worked through, bringing outbreaks of rain. but now, a gap appearing between the clouds. an area of high pressure building its way just in time for the weekend. that means it is looking dry for the vast majority. there will be some areas of patchy cloud with one or two showers, but most places will be fine

with some spells of sunshine. saturday morning getting off to a rather chilly start. some spots down in single digits, but through the day, we're looking at long spells of sunshine. i think we'll see a bit of patchy clouds tending to bubble up as the day wears on. look closely, there may be one or two showers in northwest england, northern ireland and scotland. even in these areas, the majority will stay dry. a noticeable west or northwesterly breeze. temperature is just a touch below par for this time of year, but in the sunshine, it won't feel too bad, 17—21 celsius. a bit of rain will skip across 0rkney and shetland during saturday night. otherwise, it's dry with clear spells into the early hours of sunday. another rather cool start on sunday morning, but with our area of high pressure still in charge sunday, it going to be another dry day for most. the high pressure centre down to the south, where we'll have the best of the sunshine. more cloud further north, and behind me, you can see this frontal system. that will introduce something of a change very late in the day to northern ireland and western scotland.

some splashes of rain getting in here by the very end of the afternoon, but for most, it stays dry. it's a warmer day on sunday as well. 19 degrees for glasgow, 23, maybe 2a down towards the south and the southeast of england. 0ur area of high pressure tries to hold on into monday, but i think this frontal system will make some progress southeastwards. bringing some splashes of rain on and off, the rain quite showery, quite sporadic in nature. there will be some dry spells as well. towards the southeast of england, it should stay dry for a good part of the day. still warmer here, but slightly cooler and fresher further north and west. through the week ahead, there is going to be a lot of dry weather. there'll be some spells of sunshine, the warmest weather down towards the south. some rain at times, most of that towards the north and the west.

this is bbc news, i'm james reynolds with the latest headlines for viewers in the uk and around the world. saved from serving time: president trump commutes the a0—month prison sentence of his longtime ally roger stone. another record jump in coronavirus cases in the united states. we report from arizona, where infections are surging and doctors have to make tough decisions. you have to pick and choose who gets that life—saving intervention, that is a horrible situation to be in, i have never had to be in that situation. britain's prime minister appears in a mask for the first time in public, hinting at a tightening of the rules. turkey's president signs a decree converting one of the world's most iconic buildings, istanbul's hagia sophia, back into a mosque.