of the turkish president, hours after one of his ministers was refused entry to the turkish consulate in rotterdam. police carried out mounted charges at the protesters, who had gathered outside the consulate as the diplomatic row between the two nations escalated. fatma betul sayan kaya, turkey's minister of family and social policies, had arrived by road on saturday ahead of a rally planned to help harness the votes of turks living in the netherlands. she's now been escorted by dutch police to the german border. an intruder has been arrested after scaling a fence and entering the grounds of the white house. the man was carrying a backpack, although it didn't contain any dangerous material. president trump was in the building at the time of the incident. now on bbc news — it's time for click. this week, watch out, pollution. we will clean up the city with a bird? no, a plane?

no. it is a flying fish drone. this week is the bbc‘s so i can breathe season, looking at ways to tackle air pollution around the world. we are out on the streets of london to test a new camera from a thermal imaging company. it has a sensitivity to a range of gases which are invisible to the human eye. the camera is supposed to be used by experts who know what they're looking for in the numbers and colours that they see and it's really supposed to be used in industrial locations as well where you are looking for gas leaks. but, i must say, even here i can see

sprays coming from some of the exhaust pipes through this camera that i cannot see with my eyes. now, if you want to tackle air pollution problems across a city, you have to know where the pollution is coming from and at what time of day. that is something that mark cieslak has been investigating. poor air quality, as a result of pollution, poses a serious risk to public health. it is a huge problem. the global burden of disease data now suggests that a lack of clean air is the third leading cause of death in the world after high blood pressure and smoking. but whether it triggers allergies or asthma, understanding the exact challenges that pollution causes, especially in a city, can be tricky. the levels of pollution

in cities can vary a lot between individual streets. the more precise the information is, the better we can come up with strategies to improve things. we can identify areas where there are particular problems. action to gather that even more precise data about pollution is being taken on the other side of the atlantic, in chicago. because of the location of chicago in the midwest and the fact that it is a large city, it is something of a transport hub for road, rail and air travellers. all those different vehicles don't do any favours for the air quality in the city. here, a system is being installed which has been dubbed a ‘fitness tracker for a city'. it is called the array of things, and when it is completed it will be a citywide network of sensors, or nodes, fitted to lampposts and poles.

the array will monitor a variety of things from local climate to traffic levels and the air quality of the city. eventually, all of the data the array gathers will be made available online for anybody to use. we have come just outside of chicago to the argonne national laboratory. it is part of the us department of energy and is the birthplace of the array of things. the donor is really into air quality, so they are really excited. here, the team behind the array continue to refine the sensor boxes and the technology they contain, liaising with city officials and arranging the continual roll—out of the network across the city. this is the guts, if you like, of the array of things nodes. which part here is the air quality sensor?

this one is the air quality sensor. each one here is a specific cell attuned to a specific type of chemical. ozone, sulphur dioxide. this is a carbon monoxide one. this is the hydrogen suphide. and it will record the total level of gas. installation of the array began towards the end of 2016. by the end of 2018, 500 nodes are planned for the network, spread across different parts of the city. charlie catlett is the array of things project lead. he took me on a whistlestop tour of some of the city's earlier sensor sites. so, charlie, this is the site of one of your first sensors, isn't it? this is one of the first six. this one here does the air quality, notjust the general air quality but this one will tell us seven different gases and so that means

we can say, well, this one is reading this gas particularly high and we know that that that is associated with a diesel truck. the new ones that we are putting in, we have added a new sensor for particles. what we can do with a particle sensor is we can look at the very fine particles that are measured by epa and other organisations. the smaller particles are the ones you cannot see but they are quite dangerous. they will go straight into your bloodstream. the large ones are what triggers allergy. so if you are somebody with allergies related to asthma, you will be able to use the data from these nodes to look at pollen across the city and you may decide to change your cycle route to school or work, based on maybe where the pollen concentration is around the city. chicago is not alone when it comes to pollution monitoring. we have a system also in london called nowcast, which combines historical pollution data with current pollution measurements to provide an hourly update of pollution levels across the city.

the rollout in chicago continues. the array of things nodes have been installed in other us cities with one in seattle and another in denver and there is interest in the system internationally as well. the data generated by the array of things will be used by researchers, scientists and healthcare professionals to get a better picture of the effects of poor air quality and pollution. when it comes to turning this information into action, that is job of local government. these two employees works of the city of chicago and working out how the array of things can help the city look at a range of issues. we have pockets of increased rates of asthma among our children that doctors have known about for quite some time but they do not have a lot of information on why they happen in certain areas of the city. the role of the array is to help us

understand the issues with air quality in chicago at a detailed level because you cannot fix a problem if you cannot define it and understand it. we think about how heavy pollutant vehicles. . . say, if we installed hundreds of miles of bike paths, there is clear research showing that inhaling diesel fumes, especially by cyclists as they ride alongside traffic, can harm them. it helps us to picture it and take a good look at where the bike avenues are and how that corresponds with the system. if you have a school or a vulnerable location close to an area that has increased air quality challenges, the data from the array of things will give us the ability to define a policy that will address that. a good example here in chicago is a quickly growing neighbourhood on the west side. it has evolved into one

of our trendiest residential and entertainment district. but it is also crisscrossed by any number of street level railroads. by looking at data and using this data we will make decisions more confidently and we will know that better than many other cities have the ability to know that, because of the data that we collect. here, the technology has a role to play in the fight against poor air quality. but the big pollution—busting powers lay with local and national government. that was mark in chicago. in london, i'm checking out a pollution monitoring device with a difference. i will give you a clue... this is the launching arm. with this water tank, they can launch their prototype. they even have their own wind tunnel. imperial college's aquamav is a drone that can fly

through the air, dive into the water and then leap out again. sploosh! all the while, gathering data to give us a greater understanding of pollution levels above and below the surface. the plan is to release a swarm of them into an area of concern. this is our response to extreme environments or post—disaster applications such as after floods, toxic spills, or oil spills, nuclear accidents or tsunamis. there are different classes of applications and capability to do sampling with an automated, low—cost tool brings an enormous value compared to many other methods such as the human going there with a full protective suit. i was going to say, we have seen a lot of aquatic robots and we have seen a lot of flying robots.

it never occurred to me that is quite difficult to get an underwater robot over great distances quickly and, so, you have combined the two. that is ha rd—core. so, yes, we willjust dive it in the water and then dive it out and fly it that way. in some applications it is not even accessible through the water, in floods or floating ice, you may not get there via water. 0n the other side, an aerial beacon may not be able to get the information that local people need, so combining the two makes sense. during a dive, the aquamav fills with water and then by releasing carbon dioxide from its on—board gas chamber it forces the water back out as a high—powered jet which thrusts the drone back upwards, propelling it into the air. and then the wings unfold and it comes out of the water and it beautifully becomes this flying birdlike thing. it is quite graceful. that was a very

romantic description. now you know how romantic i am and what i get excited about. there is a beautiful part of it which makes it elegant. and elegance in nature that makes it effective as well. having the folding wings might look beautiful but for us it allows us to reduce the drag that it would experience as it dives in the water and allows it to dive more deeply, as well as protecting the wings on impact. hello and welcome to the week in tech. a week which saw airbus reveal plans for a hybrid car that flies. whenjaguar land rover revealed a search and rescue vehicle that is home to a heatseeking drone. and when hyperloop showed off a 500 metre long test tunnel from which it hopes to fire passengers at around 600 miles an hour. that would be a two—second journey. no time to scream. testing begins soon. it was also the week in which the revelation was televised.

according to wikileaks, the cia and gciq can listen in on targets using samsung tvs. even when users think they have switched them off. a range of other surveillance methods were exposed including a us spy department dedicated to hacking apple products. wikileaks say that the cia is out of control. apple and google say they have plugged the holes and samsung said it takes privacy seriously and will be listening closely to the concerns of its customer. facebook was left red—faced when the bbc pointed out its platform was being used by convicted paedophiles to share sexualised images of children. and because the bbc shared the images with facebook to help clean up its platform, facebook reported the bbc to the police, accusing the corporation of distributing images of child exploitation. want to buy a cheap house? this one took only 2a hours to print and cost $10,000. now, with a future of artificial

intelligence ahead of us, it's no surprise that tech giants are investing big time in data sensors. super brains to make intelligent decisions in the cloud. but is this the best tactic? here's dave lee. nvidia is taking a different approach. it wants to do all that incredibly computation on this. nvidia is best known for creating chips to handle high—end graphics, but increasingly the company is looking to apply that computing power to data and ai. this week it introduced jetson tx2, the latest in their line of what are essentially supercomputers on a chip. so, thejetson tx2 is really for artificial intelligence at the edge. now, when i say at the edge i'm talking about devices like robots, drones, portable medical devices,

that need a lot of intelligence, but they are really small and they really have small power envelopes. sojetson is going to give them the level of performance they need to do artificial intelligence in that small power envelope small size. so a drone that has artificial intelligence on board is going to help find people that are missing, say, in the wilderness, and deliver them first aid or supplies. some hardware makers were given an early chance to experiment with the new gear, which they said it has many practical applications. there are many reasons why you might want to keep your computing power on a local device like this. for starters, it's much more secure, because your data is not being sent to and from the cloud constantly. that means some decisions are made quicker, which, if you're riding in a self—driving car, you'd probably appreciate. there are many microcomputers on the market and most of them strive to be as cheap as possible. but not nvidia's. the jetson tx2 will cost at least $1100. it's that time of year again. i've arrived at london's

wearable technology show. only some of the highlights don't seem to actually be wearable. well, i've always thought that one of the most natural uses for augmented reality would be to provide satnav in a car. that's one of the functions that this device provides. so first of all. it's got this section that sits on the dashboard, where an image is reflected onto this small piece of glass, and then we've also got this dial on the steering wheel that allows you to run through various functions. things like being able to change your music, or answering phone calls without diverting your eyes away from that route straight ahead. the only thing is that you're actually changing the length of focus, so even though i'm looking in the same direction, looking at the screen does

take my attention away from the road a little. probably for less time than a separate satnav screen over there, though. smart rings, vibrating coats, sportswear tracking your every move — it has all been thought of. the market for wearables reached an all—time high in 2016, with 102.4 million devices shipped. but the focus has shifted away from smart devices connecting to multiple apps to simpler ones connecting to just one, and that seems to be a trend reflected here. if you are travelling somewhere on foot and you need to find your way, then some satnav in your shoes would of course be ideal. this device has been around a little while, which can attach to the laces of a pair of trainers. but now it also slips inside an insole, so if it is time to turn left, well, well, your left foot will vibrate. time to turn right, and your right foot will. last year we featured a different type of vibrating insole. this is the prototype of path which is aimed at the elderly

or infirm to help them maintain balance. this year, the same company have a different product. the device is for people who are suffering from parkinson's. it will shine this laser light in front of each foot to help them put each foot steadily in front of the other. within parkinson's there is a symptom called freezing of gait, which is fairly common. it causes an individual to feel as if glued to the floor at any moment during walking. as you can imagine, if yourfeet are suddenly not following you, you become quite prone to falling. researchers found you can use visual triggers and sensory cues to enable a person to continue walkin and take another step. and another insole on display. this seems to be a bit of a theme this year. this time it is a personal safety alarm. if you want to activate it you tap your feet together twice and your selected emergency contacts will be told there's an issue. to switch off the alarm, you just tap your feet

together three times. some products on show were more finished than others, but overall it was a good glimpse at how some of the latest wearable tech is looking right now. that was lara. now, if you're a parent, like me, it's probably crossed your mind that your kids might be using technology a little bit too much. how long are they spending on their phones? how much are they texting? but the popularity of texting amongst young people isn't all bad. sumi das been exploring how one organisation using it to help young people deal with serious issues. every monday morning, this woman spends four hours texting with people in need. she's a volunteer counsellor for crisis text line, a free support service in the united states. counsellors and texters remain anonymous for privacy reasons. we have a lot of middle

schoolers who are concerned about what is going on at school and they reach out to us during the day. they might be concerned that they are sitting alone at lunch, for example — that's at one end. we have texters texting in because they're in a domestic violence situation. most texters are young, under the age of 25. what's fascinating is people tell us everything. they spill their guts. typically by the third message. so noone overhears you, you don't have to wait, even to be in a quiet place or a quiet moment. the millions of messages exchanged on crisis text line make up a data sets teeming with menta health insights. it reveals when texters struggle with eating disorders and where they have suicidal thoughts. the data was also used to build an algorithm. the model essentially performs triage by analysing each word in the message. so a person who is thinking about harming themselves would have a higher priority in the queue than somebody

who is sad after a breakup. we quickly learned there were other things that were even more high—risk, that we didn't think of or didn't know. things like #kms, which means "kill myself. " conversations that reference things like ibuprofen, tylenol, advil, draino, all the household drugs that are within reach. the data is anonymized and texters can opt out of data sharing. to promote mental health research, some data is shared with select researchers. scientists at stanford used natural language processing to study about 3 million text messages. they uncovered five phases in the conversations. the introduction, problem setting, exploration, solving and the wrap—up. the best counsellors were really quick to get through this problem exploration phase. they were really good at getting to the heart of the issue to understand that,

and they were quicker to move on in the conversation, which means that they then had more time to spend in this problem—solving phase. at the end of the chat, texters can rate their experience and the counsellor. the researchers found effective counsellors avoided canned responses and were able to shift the texter‘s outlook. we built an algorithm set that could measure different kinds of perspective change from talking, using lots of negative words, to talking about more positive words, to talk about how much you focus on the past versus the present and future, and how much you focus on yourself versus other people. the next step is to create training tools for counsellors, like real—time feedback on the conversation, and exploring the potential of a conversational agent — a robot. while data science and tech gets these self—professed data nerds at the crisis text line very excited, it will not use chat bots. every messages is read and replied to by a human. that was sumi das. we couldn't let you go

without mentioning this mind—controlled robot that responds really well to a certain thought. in collaboration with boston university, mit's computer science and artificial intelligence laboratory has published a system that enables human users to correct a robot's mistakes by thought alone. it uses the signal we produce when we detect a mistake. it's called the error potential. the user wears an eeg cap and watches as the robot sort paint and wire into two bins. if they see the robot making a wrong choice, they simply think, "that's wrong!" the cap will pick up that thought and the robot will correct its mistakes. we're interested in exploring the possibility of combining the error potential with other types of signals that might be easily and reliably detectable from eegs. even though these are baby steps there are tremendous applications that could happen in the home,

on the factory line, or in the floors, so this technology can actually help support people in their daily activities, whether they're at work, at play, or in transportation. pretty interesting stuff, although admittedly, i think that is still for the reasonably far future. so how about i tell you about something in the more immediate future? next week, click is going to india. we'll be travelling across the country to meet the people who working hard to change lives, save lives, and maybe one day discover new life. i can't wait, it's going to be brilliant. join us on twitter throughout the week for more tech news and behind—the—scenes photos and we'll see you next week in india. hello there.

saturday brought northern ireland its warmest day of the year so far. it won't be repeated today, but we will see some sunshine. this was the sunset on saturday evening and 16 was the temperature that we reached, that's 61 fahrenheit, at the giant's causeway. we had 18 in the sunshine in the south—east, and it was on the whole a fairly decent day for most. however we did have that weather front around. the rain has been pepping up, some fairly heavy bursts of rain in the south, even the odd rumble of thunder off the south coast. so we do have notjust one but two weather fronts to contend

with for sunday, an awful lot of cloud, misty, low cloud, hill and coastalfog, so for most, sunday is going to get off to a mild start. so this rain in the east obviously bringing a different day for eastern england, and some damp weather in northern ireland in the morning, moving quite soon across into wales, the south—west, western scotland. remember, all the time it is going to be a grey and misty start. so some low cloud around the hills and coastal fog as well. but behind this first weather front and ahead of the next one we may well have some brighter weather up through the east of wales, the midlands, into parts of northern england and central scotland. but still quite murky near the east coast of scotland, compared with saturday, and that next rain band is getting into the west. now, all the time, the rain in eastern areas will be fizzling out. it looks as if the rain further west, as it heads its way in across the mainland of the uk, will tend to turn more showery as well. but there will therefore be a lot of cloud around and more limited brightness. but it does look pleasant for northern ireland into the afternoon, western fringes of the uk.

and that means we will see some sunshine, but it will not feel as warm as it did during the day on saturday. temperatures only 12—14 degrees. and then through the night, as the skies clear further, we are in for a chillier night. we could have a frost, a light frost, as we head into monday morning. perhaps the far south and east still quite cloudy, so still escaping. but, with high pressure building in for the start of the week, it does mean the weather is settling down. so monday looks like a decently dry day, with some springlike sunshine, just not the springlike temperatures we saw through the first half of the weekend. but still, 1a or 15 with some sunshine is pleasant enough. but that weak weather front is starting to invade from the north—west. the breeze is increasing, so tuesday does bring more cloud further south on that weather front, not much rain. and it is hanging around into wednesday, as well, before the pressure tries to build back in again, and the weather fronts mostly pester northern and western parts through the coming week. but you can see the risk of some thicker cloud in the south on tuesday. still a lot of cloud into wednesday. as ever, there is more detail on the website.

bye bye. welcome to bbc news, broadcasting at home and around and around the globe. i'm gavin grey. our top stories: riot police deploy a water cannon at turkish protestors in rotterdam after the dutch government stops two turkish ministers addressing a rally. earlier, the dutch government prevented two turkish ministers from addressing the rally. president erdogan described the dutch as "fascists". translation: do you know anything about politics or international diplomacy. they are nervous and they are cowards. they are fascists. after abandoning its one child policy — china says 18 million new babies last year is still not enough to prevent the ageing of its population. joni sledge — a founder member of the iconic pop group