some of hong kong's metro system remains shut after a day which saw stations and businesses attacked in violent anti—government protests. demonstrators defied a ban on face masks during the unrest. chief executive carrie lam has defended her decision to invoke emergency powers. the us secretary of state mike pompeo has dismissed questions about donald trump's attempts to push ukraine and china to investigate democratic rival joe biden as a "silly gotcha game". leading democrats have issued a legal order demanding the white house hand over more documents on its dealings with ukraine. the british foreign secretary has urged america to reconsider its decision to let a diplomat‘s wife — who was involved in a fatal car crash — claim diplomatic immunity to leave britain. 19—year—old harry dunn died in the collision in august. now on bbc news, it's click.

this week, microsoft boss satya nadella uncovering state—led internet manipulation. and abominable animation. look at him. he's a yeti. some call it fake news, some call it disinformation, online manipulation, or even information warfare. the tech giants call it coordinated inauthentic activity.

false news articles on facebook, bots amplifying questionable opinions on twitter. what we now know is that nation states have and are weaponising these techniques to their own ends; russia to interfere with elections, china to spread disinformation. but there is one place which hasn't been associated with deliberate disinformation recently. and that's wikipedia. it's the largest collection of human knowledge ever created, arguably the first digital wonder of the world, the font of all internet knowledge. it has nearly six million pages, with a staggering 18 billion page views every month, and it was created in the best spirit of the internet. transparent, nonprofit making, and open for everyone to read and edit. we may have been naive to believe everything that we read on facebook. but surely wikipedia's army of volunteer editors and fact checkers can keep

disinformation under control. well, now click investigates evidence of a possible strategy by the chinese state to manipulate wikipedia for its own propaganda aims. here's carl miller. edit wars stemming from genuine differences of opinion have been part and parcel of wikipedia since the very beginning. so is vandalism, which is why wikipedia has created ways to combat it, with a mixture of bots and editors with special powers patrolling the platform day and night. but what's to stop people or even worse, governments and regimes, from manipulating the site for their own ends? it's something that's bothered me instinctively for over a year now. what first got me on this track were these two documents. both initially written in chinese, but we had them translated into english. one is written by a chinese official. the other was written by a couple of academics.

they present a playbook for how wikipedia operates — strategies to influence the platform and argue there are strong reasons for doing so. strategies such as creating teams to edit on the platform, and cultivating opinion leaders, and using different rhetoric to change and rebalance china's image. both papers stress what a vital source of information wikipedia is for the people around the world who read it, but complain that it contains misleading and prejudiced content against china's national and governmental image. but this isn'tjust a problem to be confronted by volunteers, in the words of one of the papers, the chinese state should act proactively too. one of the places mentioned is taiwan, situated to the south east of mainland china. the island is regarded by china as a renegade province, but many in taiwan dispute this understanding. so if a war on wikipedia is going to be fought anywhere, it's going to be there. armed with this information, i went to meet some taiwanese wikipedians at a hackathon in the capital city

taipei. this is a very crazy year. yeah, a lot of taiwanese. wikipedian‘s attack and left. later on, they pointed me to some examples of the kind of manipulation they say is happening on wikipedia on chinese—related issues. one concerns the very nature of taiwan itself; is it an independent nation or in fact a province of china? they repeating editing power articles on the english and chinese wikipedia, and they wipe out the taiwan open and just keep the china really repeating itself. taiwan is part of china, one of the provinces of china. it's not like outright vandalism it's just like pruning the language. shifting the language to kind of go from one thing to another.

how long will it be been going on for? years. years? and examples kept flowing, such as the senkaku islands, a disputed territory actually, but which for a while was china's inherent territory, at least in mandarin on the wiki data pages. although there are elected office holders with powers to take down or lock articles, some of taiwan's wikipedia is fair that these elections for these positions have been targeted amidst a general rising atmosphere of intimidation. so taiwanese wikipedians or people that voice anti—chinese opinions on wikipedia, they get attacked and trolled and abused and docs on wikipedia regularly attacked. what does wikimedia global think of all of this? is it because they're american and they just don't know the word? heather ford has researched political edits on wikipedia. whenever you have a group of motivated and well resourced people

who are taking a particular political line on wikipedia articles, that they can very easily overwhelm the volunteer efforts of wikipedia. our own investigation has managed to find nearly 1,600 times where, across 20 topics or so, wikipedia was changed to broadly bring its content closer to the chinese government's line. i tracked down an expert on chinese social media and cybersecurity to give me a broader sense of how this all fitted in. telling the china story has become a really important concept and idea in the last couple of years in chinese politics. they think that the rest of the world has wrong views of them, misunderstands them, and in order to do good politics for them, they need to project a good image. looking at the articles on the recent protests in hong kong, the english and chinese versions are completely different from one another.

this time, the edit war between a couple of editors saw 52 changes in the space of a single day, arguing over the goals of the protesters, and small language tweaks constantly such as whether they were protesters or, infact, rioters. academic shirley yu thinks that trying to tell your story is really the natural behaviour for any up and coming superpower. china feels like a hong kong issue is my issue. "i own the issue therefore i own the voices on the issue "and i should own the verdicts on the issues." everything that china is primarily interested in and concerned about is to defend its political positions. it's all about china. the anglo—saxon world's primarily over the foreign debt over the past four decades has really framed the china story and the interpretation of china based on a western follow article in the political economic framework.

and i think today china does owe the world a china story told by itself and from a china's perspective. i think it's not only chinese privilege is really a responsibility. we really don't know how widespread all this is across the vast expanse of wikipedia's multilingual entries. and it is impossible for us to verify whether the chinese government really is ultimately responsible for any of it. absolutely conceivable that you know like people from the diaspora, you know, patriotic chinese are editing these wikipedia entries. but to say that is also to ignore that larger no structural coordinated strategy of the government has to manipulate these platforms. heather ford isn't surprised at all to see the states might be getting involved. i'm surprised it's taken this long actually. i mean when you consider the fact that wikipedia is not only the fifth most popular website in the world, when you ask siri or you ask google questions now using the knowledge

engine is from wikipedia. so it is a prioritised source of knowledge and facts about the world. and if you can influence that then you are you have you are influencing and if you can influence that, then you are influencing how people are understanding and perceiving what the truth is. that is fascinating stuff. and carl's with me now in our underground bunker somewhere. carl, how sure can we be that these manipulations are being done under instruction from the chinese state? and also how sure can we be that it is really widespread? we know there were 1,500 tendentious edits in our own investigation across roughly 20 different wikipedia entries, and we know that all of them pointed in certain ways towards chinese geopolitical interests as far as we can tell. what we do not know

is who was behind these edits. we don't know why. we don't know why in fact they were done, but most importantly we can not make a direct link between any of those edits and the chinese government themselves. 0k. so you've put this to the wikimedia foundation which is the kind of overarching body that oversees wikipedia. what's their reaction? broadly they're saying that whatever you're actually doing on the site if you're systematically doing it for political gain that really is against the very reason why wikipedia was really created. but the problem is that we've heard the same from facebook and other web 2.0 companies where they're basically saying, "well, it violates our terms and conditions." but people still do it. the ace in the hole for wikipedia would be that they're now passing these links that we've sent them and all the evidence that we have to their tens of thousands of community editors and volunteers wikimedia, the foundation is not actually responsible for the content, that

would be the volunteers themselves. which of course is a huge benefit for them. they can mobilise all these people around the world who will constantly patrol and protect the site. and in fact do return many visits that we saw at least back to their original state actually quite quickly. doesn't this come down to different definitions of the truth? of course it's worth remembering that, at least in the eyes of the authors of the papers we covered, they were simply being motivated by desire to correct western misconceptions and biases regarding china. you know, you've got with wikipedia this kind of vision of the open internet, open knowledge, open source, but then in stark contrast you have this another kind of newer perhaps but rising idea and that is the kind of increasing power of states online. you know, the idea that geo political battles will now be fought online too, and that places like wikipedia may be becoming too important or too powerful for states to really ignore in their struggles over the truth and in defining what people believe. carl, how absolutely fascinating.

thank you so much for the research. it ruled that courts in the eu can order facebook to remove users comments to have been deemed illegal. the eu also brought in new repair laws. white goods will have to be built to be longer lasting. makers will also have to replace replacement parts for up to... elon musk unleashed starship; the shuttle is expected to take its first test flight later this year. and gopro has allowed bloggers to bolt on and new... after mixed reviews for the hero seven. osteoarthritis patients are testing

the world's first smart love thanks to a pilot run by hospitals in madrid. it can be programmed by doctors to heat up, vibrate and perform physical therapy whilst patients rest at home. the firm behind the glove says this makes it easier and cheaper for health services to treat patients. and finally a bright—eyed robot assistant is helping out nurses at a hospital in texas. made by diligent robotics, it uses al to recognise its surroundings and features a camera and gripper to pick up objects. don't worry, the humanoid bot is only running errands at present, so there is no chance of a robot bloodbath just yet. we're here at microsoft's future decoded event, which is looking at al and how it may change workplaces across the world. back in the day, microsoft changed everything with windows making back in the day, microsoft changed everything with windows making itself the most valuable company

in the world. and bill gates the richest person in the world. but then things went a little wrong. mostly because microsoft missed the mobile revolution and fell well behind apple and google. but then as we told you earlier, this year along came new boss satya nadella with a master plan to return microsoft to its former glory. well, now dave lee has caught up with the man himself to find out how that reinvention is going. this week, microsoft chief executive, satya nadella, was in new york to show off a range of new devices the firm has been working on. but before showing them to the world, microsoft invited me to seattle and into their lab; a place where the firm's devices are conceived and perfected in a number of curious and, as you'll see, painful ways. engineers here are able to prototype and make design modifications on the fly. going through many different iterations before settling

on the final design that will get mass produced in china. but that doesn't happen until it's gone through a series of extensive and unusual tests. this is microsoft's human factors lab, it's here where they test their new devices for how they're going to look, how they're going to feel — including under different lighting conditions like when you're at home or if you're in bright sunlight. the work that takes place in the human factors lab is a closely guarded secret. in fact, it's a closely guarded secret even once the products they've made are released to the public. as far as these people are concerned, if they've done theirjob properly, you won't notice their efforts. this machine is monitoring my brainwaves to see how much concentration it takes to perform certain tasks, such as typing. and this test is looking at how much muscle strain i endure when i open a laptop. something that didn't seem too strenuous to me but is apparently very important.

to find out what i'm going through, a wire the width of a human hair is implanted into my hand and then monitored for activity. and then we have our ears to think about. microsoft is following apple and amazon and samsung in coming out with its own so—called smart earbuds. these are devices that you stick in your ear to hear things, obviously, but also you can use touch gestures to interact with your computer. what we have is a small amount of prototypes that it took to design surface earbuds. and it was a long journey — it was roughly three years. we scanned thousands of ears, and we took data from that. we also took the approach ofjust trying it on. i mean we can take a tonne of data from the ear scans and inform us of general shape, but it really comes down to making the prototype and putting it in people's ears, so hundreds and hundreds of people will come through this lab.

try it on, give us feedback, and then we go through another iteration. microsoft's big secret at the new york event were these two folding devices the surface neo, the surface duo. the neo is essentially two tablets hinged together running a modified version of windows designed to work either across two screens or on two screens independently. and the duo is essentially two smartphones together running google android instead of windows. the overload is much less. i'm saying in context on a web browser on one side i'm using edge on one side and i'm looking at my neo on the other. i have a calendar on one side i have my meal on the other but it's structured in a way that you're actually optimizing and feeling good about being productive. the devices have been a long—term passion project of a microsoft chief product officer. he's very attached to this idea. the devices won't come out

until late next year. before then, a few glitches need to be ironed out. i'll open mail here. it's a pen. it just touches a little bit better with a pen. oh, yeah. microsoft has taken a different approach to their rivals. samsung's galaxy fold, for example, is already on the market, and that has a screen that goes all the way across the hinge. although some users have complained that that screen isn't particularly reliable. this is the biggest range of hardware microsoft has ever launched in a single year. adding new lines to the side of its business that, in less than a decade, has become worth more than $5 billion a year to microsoft. we were the first to create the two in one category where no one thought that that could be done. we then created even the desktop that could become a canvas for creativity with studio, we created holo lens that brought what was digital and physical together. and we've continued to innovate, and so therefore this two—screen innovation is what we think is fantastic for the kinds of things

that we care a lot about — which is productivity, creativity, pen input. to be able to have teams on one side and then to be able to take notes like, that's an everyday scenario. but samsung bendy screen, they've pulled it off with a few reliability issues, they seem to have done the same thing — huawei. so was microsoft trying to do that? or did itjust take a different route to a different direction? in fact, i've been using even the samsung, it's a beautiful device. we've worked very closely with them on getting our software on samsung and so we think that that's great innovation too. so i celebrate whenever new computers and new computing is created, because i think that's what the world needs if anything. one of the other things we want to sort of do is that consumption is great, right? i mean more browsing, more shopping, more binge watching, all as you and i do.

but also more creativity and more productivity is also great. we want that balance to some degree. the last ten years has been more about consumption, less about creation, and we want to swing that balance to the right place. that was dave lee. you know we love keeping tabs on the latest movie—making techniques, especially cgi and animation. so kate russell has gained extremely rare access to dreamworks studios in los angeles. to look at the secrets of animated film making with a look at their latest release — abominable. shrek, kung fu panda, how to train your dragon, just a few of the film series created by dreamworks animation studios. hey! what are you doing out here? and their newest film, abominable, has released in the states and topped the weekend box office. as animation techniques improve, the amount of time it takes to make these movies increases exponentially. take this guy for example. the original shrek in 2001 took six

terabytes of data and around five million hours of render time. for abominable, we had 150 terabytes of used space that'll be archived, and then we had another 150 terabytes of temp space just for effect simulations and all that data. and we used about 181 million render hours. work on abominable began seven years ago. so why does it take so long to get the original idea from paper to screen? making an animated movie is almost like you're making a live action movie. and all the technicalities of a camera in live action are now incorporated into animation. before we used to do all in 2d, we used to film with a camera locked up and on top of a table, so everything had to move down on the paper. but with this kind of technology, the camera's inside the drawing

and we move the camera around the drawing, in that we find the character, and we have to build the whole world that way. back in the shrek days, you would basically try and light and render a scene, and you would wait and wait and wait to see an image, and then you can make your changes and you wait and wait again. and so the feedback loop, which is critical for the artists, has really improved. so this is a moonray interactive render, and as you can see, i can interactively move the character around and space change the camera but i can also go through and actually start making lighting changes, and as i do that, the feedback is almost instantaneous. but the overall time has increased. so that's why the overall render hours has increased, because we're just doing much more complex lighting calculations. so how animated films are made here has changed massively over the last couple of decades, with more data meaning more detail. the shot is around 120 frames or 220 frames, and that's about 14 feet of animation. so that means this shot should take an animator two weeks to do.

technology might be at the heart of realising an artist's vision, but very often the soul of an idea comes directly from the natural world. take these koi carp in the lagoon here at the dreamworks campus. they were the inspiration for the amazing cloud koi flight scene in the movie. here's our final image which touches on the lighting for the sequence. really did an amazing job. and the results were far from abominable. guys, what are you doing up here? get away from her. i'm calling the police. he's not dangerous. look at him. he's a yeti. that was kate in la. and that's it for this week. but don't forget, as always, you can find us throughout the week on facebook, instagram, youtube,

and twitter at bbc click. you'll also find us on wikipedia. look it up. thanks for watching. hello. after a thoroughly wet night across many parts of the uk, there could be a lot of surface water, a lot of big puddles around if you are about to head out onto the roads on sunday morning. the greatest concern — parts of central southern scotland, northern and eastern england, where the rain will be at its heaviest and most persistent first thing. and of course, with the ground saturated, that flooding could be a little bit worse. so be prepared for some travel disruption. this is the culprit, a weather front which has been pushing its way eastwards overnight. ahead of it, some stronger winds, strong winds developing in its wake. but a lot more in the way

of dry, clearer weather to the south and west later on. but let's focus on the rain band for the morning. it is going to be across much of scotland. heaviest and most persistent through central and eastern areas, particularly towards those eastern coasts where there will be a gusty wind. maybe turning a little bit more showery towards western scotland. wet weather to the east of the pennines too. and the heaviest and most persistent rain will be down those eastern counties towards lincolnshire and east anglia. some of the rain will have eased for the east midlands and the south—east, but don't let your guard down. some of that rain may return later on. west of that, a blustery day. the strongest winds to the south—west and south wales. a few showers drifting through western scotland, north—west england, north wales, and the midlands throughout. but here, generally a lot more in the way of drier and brighter weather compared with what we saw on saturday. a bright day towards the north east. but the north east and the south west, there windy conditions. and temperatures at the levels they should be for the time of year. they will feel cooler down those eastern coasts with the wind off the sea. still some rain for a time as we go into sunday evening across central and eastern parts. that will fade away. drier with some mist and fog forming. and then, later in the night,

more wet and windy weather arrives back into the west. that will lift temperatures up into the start of monday morning rush hour. a little bit cooler, but at least drier to the east of the country. as we start monday, this is the chart. a big area of low pressure to the south of iceland. it doesn't look great, does it? and these weather fronts will bring persistent rain to start the day in western areas. strong to gale—force winds. they could become severe gale—force in the north west of scotland. outbreaks of rain, heavy and persistent in the morning. turning a bit lighter and more fragmented as it heads eastward into the afternoon. so some eastern areas not quite as wet. but again, given the rain we have had, there could be some other minor flooding issues. brighter weather to finish the day in the west, even though it still remains pretty windy in places. and a rather cool day too. and it sets us up for a really changeable autumn week. this is the jet stream pattern. a fairly vigorous one charging across the atlantic in this rough snaking pattern. on each little dip in thejet stream, we will see a subsequent area of low pressure. one after the other after the other. so it does mean wherever you are across the uk,

rain will feature in many parts through this coming week. so never be too far away from those waterproofs. bye for now.

i'm reged ahmad with a summary of the bbc news. parts of hong kong's metro system are still closed after stations and businesses were vandalised in the latest anti—government protests. the violence followed a decision by the territory's chief executive carrie lam to use emergency powers to ban the face coverings frequently worn by pro—democracy demonstrators. opposition legislators are returning to the territory's high court in a renewed effort to get the ban overturned.