Now on bbc news, click this week water show weve got for you. We are on the water. Under the water. Radio static. And. What was that . I have no idea. 0ops, theres been a spillage. Hey, welcome to click, hope you are doing 0k. Laras here too, how are you doing, mate . Im good thanks, this week i started talking to friends about how the winter was likely to be. Would we head back to doing zoom get togethers . What you think . There was a novelty for a couple of months of meeting friends on video chat, but then to be honest i got fed up with them. Even a antisocial geek like me realises that things are better in the flesh. So true. But the idea of heading back to video calls doesnt seem to have been missed by fashion designers. All you need to do is take a look at some of what was on show at milan and London Fashion weeks, and there seems to be a bit of a theme of waist up fashion, all about big collars and logos around the necklines. I mean, for a while now it hasnt seemed so important how we dress our bottom halves. Dunno know what youre talking about. But listen, this week, i have actually been out and about meeting real people and wearing proper trousers. These people are going to do something incredible. They are trying to make the fastest sailing boat that they can, to compete in one of the toughest ocean races that there is. And for one day only, they let me in to see how theyre doing it. The americas cup is like the formula 1 of boat racing. Fast, ultra competitive, with all of the power coming from the wind. And the boats dont so much sail as fly. Relatively small foils underneath the vessels act like wings that help to lift the entire hull out of the water and massively reduce drag. I learned to sail, god, you know, 35 years ago or something. I take myself back to that eight year old kid thinking about the boats that were sailing in now, doing speeds over 50 knots, 65 miles an hour. I just think thats absolutely nuts. Here in portsmouth, 0lympic champion sir ben ainslies team is designing one of the 5 boats that will race next march. Now the americas cup has a weird rule and that is that whoever wins the event gets to decide all of the rules for the next one. Now i am notjust talking about the location and the date, or even how many heats there are they get to dictate the type of boat thats used and the number of sailors you can have on board. So basically, every americas cup requires teams to design a new boat from scratch. In this case, the previous winners, 0racle new zealand, have chosen, guess where, new zealand as the location. Theyve switched from two hulled catamaran to a single hulled boat and made a host of other rule changes. One of the big changes in this cup with regards to the rules was were not allowed to do any physical testing. So we cant test in the wind tunnel or the tow tank. All the testing has been done in the simulated world, in computationalfluid dynamics on machines. Max starr is part of the team whove tested many, many virtual boat designs, repeatedly building and rebuilding them in software to try and improve the performance in the water and in the air. So Ineos Team Uk have a big mathematical problem to solve which is simulating all the air conditions and the hydrodynamic conditions on the yacht as it sails through the water under an insane number of different scenarios. To simulate what happens when water strikes the hull of a yacht, or when air hits the sail of a yacht, we pixelate those surfaces. We put little square pixels all over that yacht. At each one of those pixels we do a little bit of math, we understand what the temperature pressure and forces are that are acting there, then we can work out whats going to happen next and then how that cascades all the way down the line to the next pixel and the next pixel and the next pixel. And suddenly we have got an idea of what a real, living boat will look like when it is in the water in race conditions. And the more detailed your simulation is, the more pixels you can break your boat into, the more accurate your model becomes. But every single pixel is simulated by a different computer processor, which means you need a massive amount of computing. Basically, you need to harness the power not of the wind, but of the cloud. Now, the crew do get to test how the virtual designs handle. This simulator knows exactly how the current design will behave when under the control of a master sailor. So lets see how it does with me. Now i am sailing wow, one of the foils has gone into the water. And then, once were round there, if you go hard right and down. A little bit slow out of the tack in the front of the foils. 0ops, we seem to have sunk. Im going to guess, though, that thats user error and not a problem with the boat. Its not all about design, of course. The sailors are at the top of their game. All of them need to be in peak physical form, and thats the job of head of Human Performance ben williams, who also uses data, this time captured by garmin watches to monitor the fitness regime and try and find the best mix of training and rest. What im interested in is how much training they have done, how their bodys adapting to the training and how much recovery they need to harvest that training stimulus. People think you get fit from training you dont, you get fit from recovering from training. So the training is the stress, once you put stress on the body your body will adapt to be able to cope with that stress, but only when we recover from that stress. You might be wondering, how fit do you need to be to be a sailor . Well. Now, heres something i didnt know about sailing. It used to be the case that if you wanted to move the sail or an appendage on a boat, you would turn the winch as and when you needed to. But modern boats are so powerful that the only way you can move Something Like the sail is using hydraulics or batteries. But heres the thing the only way you are allowed to recharge the battery is by doing that. Its called grinding. And eight sailors, all built like brick ship houses, do this for the whole of each race to keep those batteries charged. Yes, of course im going to have a go, and of course its going to go well. So well be doing this for the duration of the race, hopefully a few more watts than that. All right, alright. Do you want to turn that up then . Go all the way to what you do, yep. So we will be. Argh wargh how can you do this, at all, ever . What is fascinating with the sport is that its not like formula i. Here, every boat can be really, really different, its a massive unknown and theres no tried and tested formula for success. How quickly do you think youll be able to tell whether youve got it right or whether someone else has got the better boat . Well know within the first five minutes. Weve got a race in december, a christmas race which is kind of a warm up to the series itself, and pretty quickly in that well know whether we got it right or wrong. Hello and welcome to another week in tech. This week, nokia struck a deal to become the largest equipment provider to bt, following the governments decision to block huawei from the uks sg networks. Amazon confirmed it would be joining google, microsoft and nvidia in the Cloud Gaming Market with the reveal of a new streaming Service Called luna. And its an end of the era for the original incarnation of farmville after facebook announced it would be closing in december after over 11 years, due to the end of support for flash. The uks first driverless car lab has been launched by Telecoms Company 02. Backed by the government and the uk space agency, the Darwin Satcom Lab will trial Driverless Cars that use 56 and satellite technology. Amazon has announced a new Payment Service that uses a customers hand to authorise transactions. Its amazon 0ne scanner registers an image of the users palm and is initially being trialled at two stores in seattle. And finally, if a device on your head for vr isnt enough, how about robot boots . These new creations from ekto vr are what they call the worlds first robotic vr movement solution. They allow the wearer to walk through the virtual space without actually moving. Virtual insanity . You decide. Around this time of year the Big Tech Companies do their annual hardware showcase, where they show off everything that will be going on sale just in time for christmas. Last week it was amazon they have turned their echo speaker into a sphere, and they had a flying Home Security camera, nothing creepy about that. This week is googles turn, with an online event, of course, so lets see what they announced. First up is google tv. It looks a lot like apple tv and amazon fire tv, it brings in recommendations and gives you a lot to choose from. And theres a new chromecast which has a voice remote control, just like the apple tv and amazon fire tv. We actually knew this was coming because it went on sale early in some American Retail Stores by accident. We are moving on to smart speakers, the newest one is that nest audio which is designed for people who like to listen to music on their smart speakers. And to make it sound good theyve embedded a High Frequency tweeter not donald trump. Laughs. Moving on to the phones, and its our first look at the new pixel phones. So just a few months ago they brought out the pixel 4a, a cheaper version of the pixel 4, and theyve updated it now with the pixel 4a 56, theres a 56 version. And here is the pixel 5, which has Wireless Charging and reverse Wireless Charging, so you can charge your headphones on the back of the phone. Its interesting because theyve actually got rid of a lot of the flagship features of the pixel four, so the face unlock camera is gone, they have replaced that with a fingerprint reader, and that soli radar has gone, that was supposed to let you control the phone without touching it, though in reality the most you could do was skip through songs by waving your hands over the phone. But that is all gone. But it will let them sell the pixel 5 at a lower cost which is going to be quite important given the Global Situation were in. But there are some impressive new software features. It can now take those blurry background portrait shots, while in nightsight mode, in low light conditions, thats quite cool. You can also now artificially illuminate a portrait with an artificial light by dragging your finger around in portrait mode, that is very cool. And thats it. I tell you what, these events go by much quicker when theyre just pre recorded and you are not watching presenters fumble through things on stage. That might have been the most low key launch for a flagship phone ive ever watched, but i have to admit the pixel cameras usually are really good, every year google brings new innovation to the pixel camera, and i cant wait to try those new features. Now, as Entertainment Venues have been struggling to reopen safely, one Company Hopes to bring an experience to your Kitchen Table via a smartphone. This is an audio only experience, so the idea is that you close your eyes and listen to the strange things that start happening around you. And they really do sound like they are happening in 3d space because they have been recorded using binaural sound. This is something we have heard before in the programme, and it is incredible. So with no idea what to expect, spencer and i put it to the test. And if you want a taster of the experience from home, youre going to need some headphones too. Radio feedback. Is everybody here . Yes. Now get yourself a glass and fill it with water. We are all in our different rooms. Many couples in this same configuration, sitting at a table across from each other. Now close your eyes. Close your eyes and keep them closed. If you open your eyes before the session is complete, you might experience a tormenting mismatch or a renting of the thin membrane that separates this world from the other competing worlds next door. I so want to open my eyes with your eyes closed, try to form an image in your mind of the person sitting opposite you. Dont look. Dont check if they have closed their eyes. Ok, this performance is aimed at couples but ignoring that minor issue, its all about placing yourself in the story. Double is the latest show from darkfield radio. Its recent sound only productions took place in pitch black shipping containers. Now, though, it is possible via an app and a pair of headphones. So when we were working with creating these experiences at home, we still wanted it to feel like a live experience. So one of the important elements of that is that it is a timed show something that happens at a certain time so there is some feeling of community about it, even though people are sat in their different homes. The main reasons that i think that there is a lot more interest in binaural sound now because of vr and of this increasing interest in immersive experiences that placing at the centre of a narrative. Im kind of on edge because i wonder whether something. Something that will make us jump. Chuckles. Male voice two people who have known each other for however many years sit on either the side of a table. One of them has been replaced by a demon whose intentions are unclear and unlikely to be benign, and the other is planning a murder. Planning a murder . Is that you . I dont know one of us has turned into a demon and the other is planning the murder. We both sound a bit dodgy. Plate smashes. What was that . I have no idea. Much like the binaural sound recordings weve seen on the show before, its recorded using a binaural sound head, shaped like a human. In both ears are microphones. You treat this head as if it were the audience members who is going to be then listening to the performance, so every everything that the head hears is will be from the perspective of the future audience member listening with headphones. And one of the things that analogue binaural recordings do better than any real time audio spacialisation is proximity, so we are also developing some other tech elements to include live microphones with the audio of the microphone spacialised, speech recognition and a few other things that will allow us to increase this interactivity. Male continues speakingzw didnt take long for the right moment to come. Footsteps. Because opposite me, the demon has its eyes closed. And so, i stabbed it. Oh, god. Cutlery clangs on a plate. And now that the demonic copy is disposed of. Oh god lara laughs. Our real partner can come back. I love you with my heart. This is pretty freaky i love you with my mind. Its whispering in my ear no i dont like it i cant love you. Robotic womans voice thank you. You can remove your headphones. Thank you. Anymore than i do. Door closes. Oh and open our eyes. Goodness, that was quite bizarre oh, that was a bit of fun conceptually, i thought it was brilliant, but i wasnt sure about the storyline because i didnt actually want to murder you. And even though it sounded good, i think we probably would have both benefited from over ear headphones. True. Whats interesting though is that because they asked the two people to face each other, they really can make things sound like they come from a specific place in the room because they can send one person a sound in their right ear and they send the other person a different feed where the sound is in their left ear, so you can both agree that the sound happened over there. Really interesting concept, i have to say. Now onto the Great Barrier reef, wonder of the world, the largest living structure on the planet. At over 1400 miles long, its so big that you can see it from space but as you probably know, it is under threat. Rising water temperatures and a changing environment cause the coral to go white, to bleach, and the reef has just undergone its third mass bleaching event in the past five years. This time, for the first time, white, stressed coral has stretched from one end all the way to the other. While cyclones and Climate Change pose huge threats to the reef, there are other factors, too. So nick kweks been finding out the Great Barriers to the reefs survival. Sugar, a billion dollar business to australia. Almost all of its cane is grown here in queensland, with the Great Barrier reef right on its doorstep. When it comes to conserving the reef, a lot of work is being done out at sea, but there is also stuff happening right here at sugarcane farms like these, which are dotted all around the tropical coast. It is the run off from these sugarcane farms, the pesticides, the herbicides, that are posing to be a huge threat to the future health of the Great Barrier reef. Chris and belinda have developed smart water sensors that remotely measure nitrate levels in farm lagoons. Nitrate can lead to more algae build up and less coral diversity out on the reef. Thats where the light shines through and thats where you get your reading from. Their system, including a bunch of sensors and a computer in a waterproof box, helps them remotely secure more accurate readings around the clock and, crucially, gauge the effects of specific rain events. We might not have a lot of nitrogen leaving every paddock on every farm, but all it really needs is a little bit over a large area of land. Those marine systems, they have not evolved with high nitrogen levels, so once that changes a little bit, you change the balance. Robotic voice enable spraying. One solution could be this herbicide spraying drone that zones in from above and targets hard to reach weeds, thus greatly reducing the amount of chemical spread across a field. 0ften here, especially in the wet tropics, you actually cannot get back onto the paddock, so it is too wet to be able to get onto. Or, as we have with sugarcane, it becomes too large, so the only way to get any product back onto it is to do it with an aircraft of some kind. The dgi drone has four radar sensors on board so it can get close enough to crops without crashing, and the nozzles have been specifically designed to form just the right amount of liquid so droplets dont blow off into the wind. Airborne contraptions are helping the reef in other ways. These three little bumps just there . Yeah. That means that this is live coral. Right. So you can inferjust from the shape of the wave . Yeah. Doctor karenjoyce uses drones equipped with sensors, like spectrometers, to capture detailed information unseen by the human eye. It mea