stories of people who hold over information. they want to express g.w. on facebook and twitter to up to date in touch. welcome to tomorrow today the science show on t w. coming up. the stuff of life is it possible to create spell out officially. dockside of the internet of things we show how easy it is to have a robotic vacuum cleaner. and what happens in our brains when we try to multitask and how can we avoid mental overload.

when many jackie late they can release from 15000000 to over 200000000 sperm per milliliter. but only a fraction of those reach the woman's fallopian choose and usually only one sperm actually manages to get a chase or an egg it's a difficult journey. kumar from new zealand have a question for us about stuff. is it possible to create sperm artificially. the reproductive cells are complicated for one purpose in life is to fertilize an egg cell and father a child but sometimes they fall short of expectations. men in the western world have a sperm. count just half that of 40 years ago if that trend were to continue by

2050 they'd be sterile. a range of culprits are being blamed for moans and water supplies to chemicals in plastic all can disrupt the body's hormones but is helping hand from the wild. researchers in china the u.s. and britain have created artificial sperm in mice at least. the technique involves converting embryonic stem cells to emit sure sperm cells. the mice produced using lab grown sperm were later able to produce offspring of their own. but they had a shorter life span than ordinary mice and were also more prone to disease. the root of the problem is and how sperm are created during the cell division

process called meiosis chromosomes are duplicated and recombined. in this process is reproduced in the lab that's more prone to errors. the lab grown sperm also have no motility they can't move so they're only suitable for in vitro fertilization. the technique can't be used to create artificial humans for yet and ethical guidelines would likely ban its use. but scientists hope this research will provide new insights into infertility and new approaches to treatment . a team of researchers led by heidi sheffield at have it is currently developing an app that will allow men to test their fertility levels at home. he says the digital device can assess semen quality by measuring total spend count and maternity or the number of non-viable images spent. sells.

all this technology is pretty impressive but it also has weak points and not just online platforms are vulnerable to have her attacks and 2016 people were able to use public transit in san francisco for a day for free after the ticketing machines were hacked. the ticket only worrying us cyber attacks on hospitals. in germany reportedly some 2 out of 3 have been hacked in some way. show biz has also been targeted in 2014 sony pictures was subject to a massive attack stuff with forced to resort to pen and paper. and slows appliances are now handing happiness the keys to our homes but security loopholes that are frightening easy to exploit. a robot vacuum cleaner moves around the apartment it's one of many smart home guards controlled by computer. normally the

controls are set for the person who owns the vacuum cleaner. but on this occasion because of taking control. or dead and norm on or in the office in tel aviv they showed us how easy it is to hack into the device. we took for control that's made it. what makes it possible is that all small vacuum cleaners made by this manufacturer are accessible by the cloud. so even though oded on his team don't have one of their own they can register as new users and replace another users id code with their own. time. and then they can access the vacuum cleaner which might be anywhere in the world. so we actually acted here. this applies to all gadgets that are part of the internet of things or i.o.t.

it can include everything from small baby phones to televisions heating systems and refrigerators. users can control the gadgets remotely using their smartphone that's because all these gadgets have an on board computer that can receive commands. but if there are security loopholes criminals anywhere in the world can access these household devices and even gain access to personal computers at the same time can start to do commons with it and then i can start to look which devices there is in my network and then start to move to does the rices and move on so it's like it's all related to the goals of cybertron or for for the bad guys what they want to achieve but there is no limit. in 2016 there were 6400000000 i.o.t. appliances linked to the internet with more going online all the time. experts estimate that around half are not secure and those are the ones the hackers have

set their sights on. developing malware for these smart household appliances has become big business for hackers as the german authorities have also observed. in 2018 there were some 800000000 on our programs in all with 390000 new ones emerging every day the best place to earn the most money is the weakest link in the chain as an io t. devices aren't a secure as they should be but. this hacker jar from the united states was convicted last year of programming malware to infiltrate household appliances. the malware link the appliance used to form a criminal network known as a net. like a remote controlled hostile army the healthful devices were used to carry out a series of cyber attacks in 2016. 1 of them knocked out dr telecom routers

leaving more than a 1000000 customers in germany without a telephone or internet connection the 1st known attack on critical infrastructure in germany carried out by household appliances. but the european union's law enforcement agency europol the man in charge of fighting cyber crime told us that io t. devices are being used for crimes ranging from cyber extortion to the trade in child pornography. vasa be a sin is a convict in the seeing a convergence among the cyber attackers they may have political motives or financial motives or they may be terrorists but they all basically use the same tools to achieve their goals that like picking and. the only way to solve the problem is to close up the security loopholes in io to devices except only the manufacturers can do that everything that we we're walking directly with a vendor not if very quietly going to fix. but many manufacturers aren't interested

cutey expert fabien mr meyer has discovered repeatedly he too demonstrates how easy it is to exploit the security loopholes by hacking the camera of his colleague in another country leaving him to the cloud id we select the cloud id it's an idea that's easy to ascertain so that's done and then we can log into the camera then i just say ok and now i'm connected as it says and it's now i just click on monitor and open the camera that we've hacked. and as you can see we're now linked directly with the office network. it's the people that don't notice a thing and they have no way of telling what someone's watching them. every camera and every device of this money factor can be hacked in the same way. twice. fabienne mackay ma says that this security loophole affects 9000000 cameras. and

the cameras connect to the internet on their own. they've been integrated into many devices including televisions. but the manufacturer appears disinclined to take action. so how can we stop cyber criminals from infiltrating out in full force. to prevent attacks from the outside on the smartphone device as a user needs and she was an only digital methuselahs. allowed to access this device and that basic principle it's to commence this one is to have a special post watch so this means that any needs to change the default passwords on the other hand the 2nd approach that uses only allow communication forms i would he devised 2 specific points in the internet and to implement this as a user needs to configure a specific file have which changes

a password is pretty easy for most of us but is it a bit more challenging is to implement so i had to have one of the words because for this so end users a device needs to know to rich and point to device communicates and this is usually not publicly available some vendor us gives us information but most don't i think savan us and also companies should. do much more about this and present for example an easy to use. overview about so security state of the biases to be more user friendly and up to the consumer needs. what do you think about smartphones and the experience with one we are still on facebook. wrote i'm amazed how advanced technology has become but it also worries me to think we'd stop doing such everyday things as switching on and off lights. miguel has a more positive take he says that small technology could help us to use energy more

efficiently and optimize electricity production. marian ellis says i think that it just encourages laziness. it doesn't cost anything to get up and put off the lights. she has got a point thanks for your posts. it probably does read why are going to movies i feel it. to you have a science question that you've always wanted answered we're happy to help out you send it to us as a video text ovoid smell if we answer it on the show we'll send you a little surprise as a thank you can i just ask. interested in most stories from the world of science go to our website or find us on twitter or facebook. these speaking doors don't belong to

a smart home as such. simply yumi in this well disney movie i list doesn't seem too impressed by the animated in animate. and belle in beauty and the beast isn't sure what to make of her singing tableware be our games. but what happens in our brain when too many things vying for our attention. in the past human brains were able to deal with most stimuli pretty easily. but as time passed we were confronted with more and more challenges we were bombarded with more and more input. and nowadays in the. digital age it feels as if we are permanently on call or on line and our brains never get any rest bite it's far from ideal.

under normal circumstances we'd be exposed to a stimulus our brains were process that then we focus on the next one. but this kind of situation is becoming increasingly rare neuroscientists yana from the cove or is investigating how our brains cope when they're forced to continually switch between tasks. she's conducting experiments in which people have to solve a set of complicated exercises. they're asked to distinguish between monsters on a computer screen that entails keeping track of 9 different distinct characteristics and identifying them by clicking on the right keys. shantha actually it's hard if they really have to concentrate. the experiment is intended to simulate situations we face at work and in our leisure time but we have to tackle a wide range of tasks in rapid succession. the

program the 1st tests how quickly the test subjects console simple tasks. then they're asked to focus on more and more features such as color form and pattern under increasing time pressure. this means that the attorney these are situations in which our brain has to make a clear distinction between various steps and decisions we do these things more or less automatically but for our brain it's hard work. young offender also carries out m.r.i. scans on her test subjects she wants to see exactly which regions of the brain are being activated the frontal lobes are responsible for handling complex tasks. that's the part of the brain that's located behind our forehead this allocates how many resources are devoted to each particular task it is it when we're dealing with

several tasks that once this part of the brain has to work hard to ensure that the various tasks i don't get muddled up thus if i shouldn't. be here the test subjects are being asked to keep track of various faces and places and how they are linked in quick succession of course the more complex the tasks the slower the response this process can be observed in the frontal lobe. when the mess lower responses correlate with increased brain activity when the task is very difficult when the test subjects respond more slowly or make mistakes and then we see more activity in this part of the brain. when the brain processes the same information over and over it becomes familiar with it and responds quickly but when it's bombarded with a lot of different information in quick succession the brain needs more time to

process the various elements the faster the tasks change the more mistakes we make . different tasks also compete with one another distracting us and lower in attention. just now he can't get a phone and we've all experienced something like this and it often feels quite unpleasant house from our experiments here we found that we indeed do make more mistakes in such situations and our response time is slower to fight it. when you're in the middle of one task and get distracted by a new one you 1st have to show the old task that gives your brain time to identify what the new one entails and attend to it that's hard work. so how did children and teenagers respond to this challenge they were born into

a world where multitasking has become the norm and they tend to be more open to new things do they solve the tasks more quickly than the adults. that this. study thing including our own we know that children of the tasks lowly than adults do and they make more mistakes or. the frontal lobes take charge when we switch rapidly between tasks on the left as an adult brain on the right a child's. frontal lobes are not fully developed until we're at least 20 so children can switch gears as quickly as adults but it will take at least 10 years before researches know exactly how multitasking affects brain development when the children growing up with smartphones and tablets are fully mature.

staying on top of things in the digital era certainly isn't easy. and. over the last 10 years access to the internet has risen 30 percent worldwide. millions of people own smartphones and spend an awful lot of time online time spent an average of 313 minutes over 5 hours a day using mobile internet access followed by the philippines and brazil. the global digital population is growing and nearly 4000000000 exclusively mobile internet. for many life is a relentless digital tyranny an endless onslaught of emails task lists information and text messages and work and increasingly at home as well. day in day out. his club it's important to

understand that we've been in gulf biotechnology so quickly that we've had no chance to learn how to deal with it properly and the fleet and we have to constantly keep reminding ourselves of what our brains need to function well. as a psychiatry and psychotherapist foca bush knows how digitalisation is overwhelming people but he says solutions are available for everyone. one strategy one thing at a time. often have to deal with a constant barash of demands especially at work. puts us in a state of ongoing stress which is ultimately counterproductive. and if we want to perform well in what we're doing we have to discipline ourselves

a little he had to discipline the stick to one task going to time and nurse ourselves in it even if this doesn't seem rewarding immediately you know when it is but it does high off in the long run with fewer mistakes and greater efficiency to know when if it and. 30 even if we do manage to focus on one thing at a time there's still a risk we'll continue to feel stressed out. in the workload and digital networking we often forget one simple thing. take a break. for fewer than 25 percent of people in germany take regular breaks at work with that i say the majority do without a break at least once in a while because they think they've got so much to do. but regular breaks are essential. you need to schedule them and then. take them ideally 10 to 15 minutes every 2 hours 15 percent. that's because switching off is believed to activate

a neural network called the default mode network. it's a brain network that kicks in when we're not engaged in a specific mental task but that doesn't mean our brain is resting it's collating and storing information and data it was processing and forming new connections and insights. into the brain these aren't just the moments when inspiration strikes it's also healing if you should give your brain short breaks in the daily routine to process what you've seen and learned the hour by the good news is that your brain does this almost automatically you just have to be willing to stop the constant flow of stimuli to flow to whole midnight. time offline is extremely helpful. especially after work it's good to decompress from the demands of the day for

example by setting up times when you go offline to take a break from the constant flow of information. many people find that surprisingly difficult. every time we interact with our smartphone it sets off a chemical process involving the release of dopamine. at all for thoughts a hormone that's part of the brain's reward system. we develop habits will behaviors that many people find hard to change even after work for less than and by one out of 20 people today have developed a dependency a kind of addiction. to. going offline can help change these habits you'll behave years it also cars out time for leisure activities like going on a bike ride or jogging. xx. size helps reduce levels of the body's stress hormones including courters old which helps us relax. only works when

you're talking about a moderate intensity enduring fix of scientific high intensity competitive support does create mental strain which isn't as restorative for the brain. going offline also gives us a chance to foster our social connections socializing online can actually lead to greater feelings of stress and inadequacy since we often tend to measure ourselves against the idealized image others project of themselves. in this noida death we now know that there's no substitute for genuine social connections virtual relationships can't replace them in the crowd. and a good night's sleep is also priceless. something is especially important when our brains have to cope with a heavy workload. but that's a lesson we seem to be forgetting. some studies show that the average sleep

duration in the industrialized world has been falling for years it's fallen by 30 minutes a night over the last 2 decades. that's not a good development when we sleep our brain is tidying up it stores the important experiences and information we encounter during the day until it's useless information like a cerebral spring clean. and in hard to school within our brain our frontal lobe needs a lot of this clearing out it's the region that handles the highest order mental activities guys the lies to the wall that includes willpower self-discipline the ability to plan tasks on carry them out as well as impulse control and all of that fuel improves quote whole idea that. enough sleep is essential. it's what gives us the energy to begin a new day ready to concentrate and to tackle the digital challenges of modern life

. how to recycle old concrete not like this but a new process may help to break down the building material to yield its individual components will release find out more on the next edition of tomorrow today and see them in public.

explorer uniform landscape and industrial heritage. vacation destination but still an insider. in this part of this future and i think that the smoke has great potential for. a small state that has a lot to offer. coming up on.

techno after the wall fell it was the fever for a lens newly found freedom. dance with all timers and new comers. from the love parade to gentrification authenticity and consumerism 30 years of tech now where are we going and where did we come from. the. world's favorite story. and it's no wonder. rectangular go. plenty of emotion.

the best game day. kick off w. . moreover a. symbol of a long conflict in the philippines. between the muslim. christian population. with its fighters on the central coast and 17 president church's response was told. me look over. the reconquest terms. it's a good reason that this is not the kind of freedom that we want. to cut deep way to islamist terror. until now the syrian army my city has personally.

an exclusive report from a destroyed city. philippines in the sights of us starts october 24th on t.w. . this is d w news and these are our top stories. exit polls in poland are showing a win for the incumbent conservative nationalist law and justice party the party had been ahead in opinion polls leading up to the ballot and styles itself as defending the country's traditional catholic values against what it calls l g b t ideology. german chancellor i'm going to bethel has told turkey it should.