And rejoin of Research Expedition in the South China Sea where german ship has been studying the effects of pollution. We all know all along but the population then was you know very small the ark to. Relax to upset the way our voice is perceived may depend on the culture in which we live in your youth but all voices have one thing in common they reveal a lot about the emotions of the person talking. To us every force is unique that means Software Developers can use it as a way of identifying us rather like a fingerprint. The person calling this hotline at a Swiss Financial Services company doesnt need to identify herself within seconds the upper. To has her name on the screen thanks to a voice print system used by a company. Customers have to say explicitly if they dont want their voice to be stored very few actually object. My name is cornelia ditto i think voice profiles are crazy. Some experts say customers are unaware of the full consequences cloud but the strength of the it also doesnt theres a serious danger of people not understanding the information do they even know what a voice print is its more a case of i didnt notice anything negative in my opinion theres no way you can call that consent. Our voices reveal a lot about us information that big business is keen to use in job applications for example. And thats what i like best about my job is the variety and this Job Interview is being conducted by a Computer Program using Artificial Intelligence it analyzes a 3 minute speech sampled by applicants to assess their personal character and determine whether theyre suitable for the position a number of firms are testing with software voice based biometric analysis is said to revolutionize Recruitment Practices thats according to its developer at least as iraq based tech start up. A lot more about the individual before i even see them i can detect their identity and personality without even meeting them before them of. The human voice contains thousands of characteristic details the company says that combined with a Video Analysis Software can create a profile for the individuals personality are they extroverted rational creative or conscientious the content of what they talk about is irrelevant but not everyones applauding this brave new Job Interviewer. Thats not how you find a suitable candidate its not something you can delegate to a machine humans have the empathy the social skills and the gut feeling about who will fit into the team best machines cant do that. Across the border in germany this company produces Software Designed to analyze a customers mood. Man i missed that one my name is doug my scholer im the founder and managing director of idea and again this Intelligent Voice analysis means looking into that person thought to understand their mental and emotional makeup. And it looks not only at what theyre saying but above all how. The software listens to the voice to determine whether the individual is sad or angry or perhaps upbeat more relaxed. A swiss call center is testing another tool that supplies a real time appraisal of how angry the customer is. He is the con the bizarre the customer is very annoyed and in response the agent is being especially cordial. Work. The parent is to calm down irate callers another option is to make them a special offer the developer even claims its software can detect depression or burnout early on from someones voice the company also insists that individuals should be informed of what happens to their audiotape or our speech reveals information that others would not normally know which is why voice prints and profiles could become a very lucrative commodity. Its not only our voice that betrays our feelings our facial expressions due to. Joy fear discussed surprise sadness or anger can all be read on our faces. Linda from india asked why do our feelings sometimes produce tears. Why do we cry in moments of intense joy or sadness. The fluid in our eyes serves to clean the cornea and keep it moist when we cry for emotional reasons. Big drops are formed these are hard to produce deliberately. Take the tears we produce when were upset for example others around us immediately know were upset thats why scientists believe crying is an instinctive form of nonverbal communication a way of sounding the alarm. But that hasnt been clarified definitively in the end we dont know exactly why we shed tears when sad happy or angry but we do know is that these emotional tears have a different chemical composition to the fluid secreted to clean our eyes. Psychologists have discovered that people feel an easy crying in the presence of strangers because it signals vulnerability but it can be difficult to hold back the tears when overcome with emotion whether in public or private. Lives away our all important lacrimosa glands are not fully developed until we are a couple of weeks old this is why newborns cry without tears there are all manner of reasons why they cry of course but thats a separate issue. And dont forget that crying can be interpreted in different ways depending on the cultural context the exception is tears of grief which people everywhere can sympathize with. And it turns out that emotional tears can have a beneficial effect scientific tests have shown that people who we are more likely to be offered help than those who remain dry eyes. If outlet is read right up but only if they. Do you have a science question that youve always wanted and say were happy to help out send it to us as a video text overly smell it we answer it on the show plus send you a little surprise as a thank you cannot just ask. For more stories. About science and to send us your questions check us out online on twitter and on facebook. We asked our viewers on facebook do you have a special memory youd like to share with us. And shared a childhood memory when i was Little Heroes oh village was lovely it was like heaven for us nature gave us all we needed. Nuclei remembers a christmas gathering with her family where the cousins played and the adults danced told dawn and she saw her grandmother dance a bamboo pole dance thats a bit like a waltz. Olivia remembers going for a walk with his father who lifted him up to get past a puddle that made him laugh a lot. Thanks for your comments and your memory. Scientifically speaking our memory is made up of facts and information. Our sensory memory retains information for just long enough to transfer it to our working memory where its stored for a few minutes. Our long term memory Stores Information for days and often many years. Bus our memory can also play tricks on us. Memory is a huge and works like a well oiled machine. Most of the time. But not always. Sometimes there are things we just cant retrieve. All of the memories land on us uninvited. And there are some recent conscious. Here are 3 classic tricks our memories play on us. First up the tip of the tongue phenomenon something weve all experienced at some point. And on something. This is whats going on upstairs a recollection of one particular person is stored in a number of locations their appearance in the visual center sound of their voice in the order tree center approximate number of syllables in their name in the language center. Defy the person the brain has to dig up and piece together a sufficient number of those features and thats where its easy to get confused. With similar sounding might 1st pop into your head because its available soon. So whats the solution want to answer to turn your attention to something completely different. The spanner in the works and eventually drops. Down of course. Trick number 2 in fact 3 memory that is memories linked to older its not just unsolicited visual memories that sometimes bother us. Not smell i dont know that from again and suddenly you might be haunted by a distinctly unwelcome memory. Why is that its Pretty Simple senses smell is the only one directly connected to the brains emotional center. And also to the adjacent hippocampus the area where memories are created. Odors and the recollections associated with them particularly vivid memory cues. Number 3 the ear worm all. Memories that refused to go away can be very annoying like a song you just have to sing along to. Songs that you cant get out of your head tend to resurface when were busy doing mundane tasks and working memory has some. Browsers through its archives and pulls out a specific song in a similar style to a record player and in our heads we either hear music. Or that we absolutely hate. This triggers a stimulus that makes us repeat the melody all never expect to ourselves that creates a never ending loop as youre singing leads to you hearing the tune internally which in turn encourages for the singing. The remedy. Researches recommend listening to the song once through to the bitter end. And then. Bury the memory deep deep down in your brains archive. That playing video games can have an effect on our brain. System regions of the brain involved in attention memory. Skills for example can be enhanced. Ok lets take a closer look at that in a moment. But 1st we checked in with our viewers on facebook to ask them another question. Do you like video games and do you play them yourself. Neil replied i dont like them id rather watch t. V. And read thats nice a. Hero likes to play minecraft and says it can really give your spatial awareness a boost. Yes wanted to know more her daughter plays minecraft and its not easy for her to understand. Alberto explained that the video game helps children develop creativity because they design all sorts of structures shapes and patterns. From indonesia replied its good kids in my country learn english through games some games also teach culture science and history and it enhances hand eye coordination. Studies suggest thats true and gaming can even improve your memory. Doing a mail round in the name of science. To understand. Alberto explained that the video game helps children develop creativity because they design all sorts of structures shapes and patterns. From indonesia replied its good kids in my country learn english through games some games also teach culture science and history and it enhances hand eye coordination. Studies suggest. Thats true and gaming can even improve feel memory. Doing a mail round in the name of science. These women and a hummingbird retirement home taking part in a Memory Research project by gaming. Mission accomplished. These game is a new beginning is. Domiciles with the wall i started out with crazy chicken which is great. Now i spend more time on memory training games which i played around out of the day. I have them on my laptop and i always want to sneak in one last game thats the last half hour before i got a bad its. No wonder shes in the lead here the more a box is a collection of Computer Games developed especially for seniors the video being projected onto the screen for the mail carrier game might seem banal but the images are said to help which even in the brain experts at the Hamburger UniversityMedical Center are investigating whether they really do combat set and aspects of aging professor youre going gonna have long use cognitive tests and our ice guns to analyze the effect of Computer Games on the brain we have children but in earlier studies with young people we found that those who play video games last exhibited the growth in volume in particular areas of the brain. That came as a surprise we performed a range of follow up studies and we were able to show that certain elements in a video game a big impact in particular is the aspect of spatial navigation which appears to have an effect on the plasticity of the hippocampus c. T. It was this hippocampus. Thats a part of the brain thats vitally important. For our memory. Given the right workout the hippocampus can evidently be kept in shape well into old age. Video games often resemble the real world you move around in 3 dimensional spaces navigation is a complex issue for the brain and video games are designed for people to have fun with and of. Fun and getting to grips with new challenges and experiences are a vital element to keeping your memory up to scratch. Insights confirmed by professor get. From the German Center for neurodegenerative diseases interest in. Every experience we have or action we take leaves traces in the brain and forms the basis for what were capable of in the future what were seeing is that a brain that is used and trained as a greater resilience to problems that emerge in old age out of. Get cancer man and his team were able to prove that connection in tests with mice. Where there was more activity among the animals and a more stimulating environment the growth of new nerve cells was excel aerated in the hippocampus. Of the interesting thing about the hippocampus is that the generation of new cells changes according to activity in the hippocampus there seems to be a mechanism that detects the current state of functions the phone says to the stem cell hey dude time to divide we need young nerve cells kodesh. Meaning that the growth of new cells can be boosted intentionally our brain is not a fixed structure its in part a product of our ongoing personal experiences it adapts constantly to them also through the creation and into. Connection of nerve cells. So we should keep on training our brain for what we want to use it for later and that means every day things simple things that make you happy and the things that push back your boundaries a little so your breaking new ground your entire life. Long the cognitive tests and m. R. I. Scans that the 100 University Medical center showed that Computer Games can compensate for a decrease in mental and physical activity in old age at least in the brain. For patients who have dementia or want to prevent it physical exercise is helpful to what were seeing with video games is a bit different were observing similar effects on the brain structure but the person isnt getting exercise but you know test subjects weve all got their hippocampus is grown dog. And so after a certain amount of training with tasks you perform in a video game create changes in the relevant areas of the brain. And with the hippocampus that above all effects spatial navigation and thats why gaming is good for the memory real World Movement or simulation appear to have the same effect. The challenge is that large cities pose to the environment very real hong kong for example is one of the most densely settled urban areas worldwide. Like many other megacities in the region hong kong is located on the coast so much of the city is waste water in south in the ocean. A team of researchers went to the South China Sea to study the impact of that waste. This German Research ship is in the waters off hong kong on board oceanographer you want. Vania and her team of scientists theyre here to study Water Pollution the toxic substances flushed into the sea primarily down the pan river hong kong lies near its mouth. Was fired through the pearl river is a special area almost 100000000 people live in the region and we want to analyze their impact on the water. Its comparable to the baltic sea region which also happens to be home to 100000000. 00. Euro nation. The aim is to identify the pollutants in the South China Sea determine that quantities and find out what impact theyre having. For 4 weeks the team will be collecting water of more than 70 spots using this probe at depths of up to 3000 meters. Looking for antibiotics pesticides toxic carbon and chlorine compounds micro plastics hormones u. V. Filters found in sunscreen products and many other pollutants. The probe is fitted with a range of measuring instruments and 24. 00 large containers that take water samples at various depths for later analysis. Scooping water out of the ocean and processing the samples is a complex procedure involving plenty of modern technology. Tapping the samples is carefully planned. That has to do with the depth of which they were taken and what will be done with the water. Samples have been taken to the lab but not for analysis that would take too long. Every day on the Research Vessel costs money for the teams immediate aim is to get as many samples as possible. And then samples will add up to 5000 of liters of water but they wont be shipped back to germany only the residues filtered out of the seawater in the on board lab. The analysis of those residues will take place months later once the team has returned to germany. And this is what those residues look like. Remind you here if it matters if you compare the plates here the difference between the open sea and coastal waters is clear. The colors of these samples indicate a lot of fertilizer in the water neither coast. Nutrients that generate a lot of biological matter which will eventually sink to the bottom on mars and you know us is already at sea. When that matter decomposes it uses of oxygen in the water that in turn deprives marine creatures of the oxygen they need. At night the scientists and crew hoist a special net on board that have been lowered to a depth of 700 meters. Its used to collect plants on which ends up in containers carried in a basket beneath and that. Gets heavy and its hard work getting it all on board. Was. The actions of one very happy couple i got samples from all depths and now im going to take a look at them i mean its ill call. Plantain a microorganisms that many fish feed on even small amounts of pollutants implying sun can enter the food chain and eventually end up on our dinner plates. Sampling time species form shells of counseling night. Yasin peterson well examine some of those shells to see what substances pollutants have been trapped in the. Conflict. Youre looking into another world. In the depths lots of things are going on at the same time among different groups. Some some eat and compete with each other getting even a tiny glimpse of that is really very exciting those officials from. The scientists know that marine life is in dire need of protection. In a few months time well have more precise information on just how polluted the waters off hong kong are. And that might help with the development of strategies to mitigate the impact of densely populated regions on the oceans. Another major challenge with facing is the worlds hunger for energy some scientists believe that Nuclear Fusion could help solve the Global Energy crisis sustainably join us for that and more next time on tomorrow and today by. The fitness. 80 percent of americans at some point in our lives will experience hardship listen up. To. What secrets lie behind swap. Discover new adventures in the 360 degree. And explore fascinating World Heritage sites of the b. W. World heritage 360. 00 get me out now. To. In the. Children. Also on the program. Because of the corona virus. Infections. In the producers