the china, like his promised partner's rich comfort. in europe, there's a sharp warning, wherever, except money from the new superpower will become dependent on in china's gateways. europe starts july, 1st on d, w. this is the sound of past having a feast. grain labels alone for destroying entire crop. this tube is designed to stop them in their tracks. should we be worried that an asteroid could destroy planet? ah, no. most scalpels autopsies go virtual. this and more coming up on today's episode. the welcome

to to morrow today, this sign show on the w two's efforts to establish the cause of a person's death date back centuries. ah, autopsies are conducted not only in the name of science, but also to solve crimes ah hundreds of years, the techniques and tools didn't change much. ah, but now a new method could revolutionize an age old practice. ah, ah, ah, some $23000.00 people die in traffic accidents every year in the european union, but it's not always easy to immediately establish the exact cause of the accident

and the fatalities. often barren announced that questions me. ready why did the driver lose control of the car? which was the pedestrian hit? who is to blame for the accident? when it comes to forensic mysteries where victims and no longer able to tell their side of the story, it's up to, to solve the mysteries. for centuries, we've relied on 4 steps and scalpel and zurich forensic scientist misha tale and his team, a breaking new ground. there, the pioneers, a virtual autopsy. the goal is to quickly establish what killed the person and how they died. currently forensic experts have to work alongside police to determine from which side an accident victim was pit. oh,

i knew technology is supposed to assist with this scan with millimeter precision the scanner photographically documents external injuries, 180 degrees from the front, them from the back. so in just a few seconds, the scanner generates a virtual duplicate of the victim. but a virtual autopsy is not just about speed because it's a digital render. the scan generates evidence that investigators can access years later. this also applies to the images from the computer tomography, the c t. this device uses x rays to scan the body several 1000 times in seconds. a digital image of the deceased interior is created. but what exactly does it reveal? was the pedestrian actually hit from the left? here this phone is fractured in the middle and it was really intense. we have

something there, there and there. i'm not sure we should also look at the skull. if it's less decided we should expect something on the left side, right? there's an impact on the left and okay, there we have that. yes, that confirms it left sided fraction to within minutes they have a classic autopsy would have taken up to i was not very clear that the left side was head injuries done by the feet and the skull due to this massive fracture wound daughters with the cause of death, there's the fraction of the break, and then the bleeding into the brain. ok, well then we actually have the mystery of the pedestrians. death was solved. but what about the driver? what caused his death? like in many cases, the young man had been partying until the early hours before he got behind the

wheel. was he intoxicated when he got into his call? me, this is the question that the virtual autopsy team is trying to establish as the case this book before the justice system. removing tissue from the deceased is the usual method. alcohol analysis is a laborious and expensive process. and magnetic resonance spectroscopy can provide data more quickly and determine if there was alcohol present, especially in the brain. the m r i machine works using magnetic fields and radio waves. the dpi and the hydrogen atoms in our bodies react in the magnetic fields. and m r i is therefore particularly good at depicting organs and muscles with high water content. images, the based on signals emitted by the hydrogen action in the water molecules during the scam me, if a hydrogen atom is located in

a molecule other than water. for example, ethanol, also known as alcohol. this changes the frequency of the signals. this allows alcohol to be detected using m r spectroscopy. so even without a tissue sample, forensic scientists can determine the concentration of alcohol presence in a dead person's brain. and then the initial estimate that's probably 0.8 to $1.00 pro mill and remain okay. but in the case of this young man, the test came back negative. he didn't lie, count, go home and only drank water at the policy. is there another biological factor that caused him to lose control of his car? in a similar case, 0 forensic scientists are once again going on a digital search for clues. with contrast, fluid, a post mortem and geography should make injuries in the vessels visible.

me. the deceased also suddenly lost control. does the car could it have to do with a heart problem? if so, a digital tomography scan should show this me, but the forensic doctors find nothing in the heart itself. can the virtual autopsy still be used to find how the accident happened? smith smith, now we have to take a look at the main artery when something happens there on out before the hunt is indeed correct. the c t images show a small but crucial injury to blue. then the bleeding of the heart is the cut in the i alter and there's where it lead long on that one. so it seems to be a natural cause of death behind the wheel, bleeding in the a arctic arch causing death. and we have it at the home

in the a or that's what the forensic doctors have diagnosed in the young driver. the cause of a tragic traffic accident blood flowing uncontrollably into the body, causing death. one of the many forensic mysteries that can now be solved more quickly with new technologies. i once upon a time dinosaurs. but at some point they banished me, was an asteroid, responsible for their mines. moral not coming up. i cosmic ball days and what could happen if they collided with planet sophia, and from algeria is center base that an asteroid could hit the

again if, when asteroids or cosmic boulders rubble from the early days of our solar system. today most of them or it's the sun between jupiter and mars and what is known as the asteroid belt. if small asteroids get too close to jupiter, the giant planets, gravity can divert them out of their stable orbits and that can put them on a collision course with the earth. the straight asteroids can collide with other asteroids and thus create smaller fragments. that then also was towards planet earth, which is why the sky is constantly being monitored to track down dangerous asteroids and calculate the trajectories around $2200.00 asteroids that passed close to earth and are large enough to cause serious damage have already been catalogued.

of the around 1000000 known asteroids and some repeatedly cross earth orbit like a pocus. with a diameter of more than 300 meters. it's big enough to wipe out a city like berlin. in april 2029. it will come so close to the earth that it will only just miss satellites in their g o stationary orbits. this particular asteroid comes close to the earth every 4 years. with the diameter of several kilometers, it's big enough to be seen with radar telescopes. an impact with the earth would cause a global catastrophe. according to new calculations, however, the risk of an impact is low for the next 200 years. unfortunately, telescopes based on earth cannot see asteroids coming from the direction of the sun . the asteroids that exploded over the russian cities shall the options in 2013

came from this direction. it was only 20 meters across, but it released 30 times more energy than the atomic bomb dropped on hiroshima 1500 people were injured and almost 400 buildings damaged and such unexpected impacts are possible at any time. now back in time, i couldn't as choice the, the reason dinosaurs went extinct. we hellions how to just chi hagar from the university of bon yeah. for a long time in the 20th century, it was believed that the extinction was due to volcanic eruptions. most people knew as they still do today, that what is now india so intensely kind of activity over a long time. the impact on the environment may have included ocean listed if occasion, which in turn led to a collapse of ecosystems over

a period lasting several 100000 years done analysis. but later in the 20th century, scientists on growing evidence of an asteroid impact in modern day, mexico and timelines that impact correlates exactly with the mass extinction. more recent research has indicated what massive consequences it had since in armies. and does that probably blocked out the sun for many years? and research is also reveal deposits of iridium and bro mean around the world dating to precisely that period of time. and the extremely high concentration of these isotopes means they must have been brought to earth via an asteroid. one, yes. so that's why we now believe that while not the cell factor, the asteroid impact was at least the primary reason for the mass extinction. that's not what makes the end of the contagious period. so special ed is that it was also

a mass extinction event. the asteroid impact caused the death of a very large number of organisms in a very brief period leading to the extinction of those species of a most mass extinction and our planet history take place over longer periods of time and hundreds of thousands of years. not long in geological terms, though, it is for us, of course. so you don't tend to notice changes happening around you. it's very possible and there are strong indications that we're currently living in a mass extinction event given the high number of species disappearing within just a few generations. if our blood is red, why do you have a science question? you'd like us to send it to us as a video, text or voice mail. if we feature it on the show, you'll get a little surprise from us as a thank you. can just use

some more fascinating stories head to our website, d, w dot com slash signs. all check us out on twitter, devote health organization full costs that within the next 10 years, 6 out of every 10 people will live in the city. the population density is based on the number of residents per kilometer squared african and asian cities tend to have the highest levels. the trend is annisa to accelerate, even in germany. in the city of munich, they've come up with a creative solution in the german city of munich finding land to build on. it's like winning the lottery. and so architect oliver loom has specialized in the opposite direction. and consolidation is just finished renovating this building and expanding its antic bond. this is where the

stairwell windows used to be. and whenever you looked out and you saw the courtyard, the garage is on an ugly rather de la dated roof. told me less stuff especially in the city like munich. and we think that every area which can be reasonably used should be developed the architect, so untapped potential here. his idea was to use the courtyard for a residential building. busy together with his colleague, alexander now looked up to move utilization of the 130 square meters space. ah. busy the technical university of damage that architecture professor constant relation to my research his the development of urban spaces after all,

currently ceiling off about 70 hector's every day of the year for new building land, which roughly corresponds to 120 soccer field talk. no, it has been noisy course, this poses any logical problem using our natural land in such a way means constantly depleting it. it will never recover from it. we need to encourage bill turner to be getting more out of the land, which is already being used is much better. logically, this is what we need to be doing. the collusion extreme new vendor schema. oliver home is a fan of such urban consolidations. one of his favorite examples, munich, architect, florian not le, creating 100 new apartments above a parking lot. this is how much looked before a parking lot between an outdoor pool under schools failed. and today, the finished construction on still with calls popped underneath message. for me,

this kind of deals use of space is suitable for any kind of housing. and we're not talking about the goods here and we're right in the middle of an established neighbourhood voice with housing built in the 1930s you often have developed ever since. and now i only want to complimented and for whom shows us another urban consolidation project. an unused gap between buildings only about 3 and a half meters wide for a long time, something was not considered useful space. now, a new building in the adjacent lots has used the gap for balconies. he put in charlotte and dorchester, the potential and now with german cities is so great because they're not as dense as we think. for example, vienna or copenhagen get by with population densities in the range of 10212000 inhabitants per square kilometer munich. the densest city, germany is about 50 percent less than that. and we have half the density time sheet

back with all of whom and his building project about the carriages in the courtyard . his client, his enthusiastic about the plans. they must also meet the strict regulations of the munich building. also receive home. we were told we have to build at least full garage isn't anything more is fine. but if we wanted to use it as free space, well, we wouldn't be allowed to do something like that. definitely, it is nice. and there are other problems. the driveway is narrow and there's not much room in the courtyard. where could a crane be set up? and how to get all the necessary machines, the materials here in the 1st place. but the architect found solutions, especially small crane that fits through the narrow courtyard entrance. winful did . and the wooden rules were adapted to the dimensions of the driveway while being pre made in a carpentry work shop. in the 8 months of

construction, the courtyard with the carriages has been transformed into a unique residential building in the blocking bath, fatal district in the house of munich. today oliver william has been invited for the 1st time to a private viewing at the home of the owners, katya, and we wanted to show you our house now. yeah, i'm excited to see how it turned out. come on, let's look. where do we start? look right here, even though it's a small space, there's no claustrophobic feeling so much green actually, you could even think you are in the countryside. yes, you think you're in the forest and instead of a dark courtyard building light now streams in through the patios, even into the stairwell. the skylights here is nice. yeah, it's great. at 1st i thought i should be able but it doesn't bother me any more.

together they've created new housing through the smart use of space. and this right in the middle of munich as the world's population continues to grow, to demand for food and resources is increasing to grain. so especially versatile as opposed to food for both animals and humans. they can also be used as a raw material for bio fuel. but cultivating cross is no easy task. climate change and pests are a major threat. for one scientists, those the war on grain. weasels is well underway. when a harvest crops, they don't just collect grain. the thousands of insects to it was, comes to the worst, they will include grain we, those love ate them just eat the grain. secretions can also cause

mold, making the stored grain on fits, the human or animal consumption. to prevent that down more, it says taking part in research projects. today to scientists have brought a prototype early warning system for pests. this country to struggle to get up there. the animal seed producer in the researches are planning to bug the bugs. they want to find out if anything's a foot in the $450.00 tons of barley here with special microphones. wherever. this enables us to hear the sounds coming from the grain from the insects inside the grain. they produced a rustling noise as they move around and each spending the spring, when you say they trample about and champ their foods shots. we gather this sound with this metal tube, then the gamut isn't the title. we don't just have a little microphone which records the sounds and it's vicinity of. so we have this

big 3 meter long, she which collect sounds and the kind of amplifier. but it does more than that. the so called beetle sound tube is also an insect tramp. here. let's say i need the perspiration in the cheaper that said that when the insects move through the grain, they fall through these holes into the tooth and caught in a container which we're about to inset to on. and we hear them very clearly then because any inspection that makes a dreadful noise in the home mode it is home may to be used to be a coco shake. molly got ca, coastal oil. the microphone is the centerpiece of the sound tube under subset, as i said, did a very sensitive microphone which can pick up quiet insect sounds particularly well . it's not the kind of microphone you'd used to record. singing is pretty specialized on the details of the research. as attach the traps and the microphone to a rope and lower it down into the tube. and then last but not least

added kind of nest for harmless insects. though, what that does, the whole thing behave, container beneficial insects. when we find pests in the grain, we can send in the beneficial ones. if we identify the persons, it's an early stage and says that they didn't have to go the hallway from the surface of the pile into the grain. we make things a bit easier for them and we transport them via the tube. and the strips of paper that to help the insects climb from the container onto the walls of the cheese direct. so i clicked on con, they get out through the whole, yet they exit via the holes. beneficial insects, a tiny wasps about the size of a grain of rice. they lay their eggs in the wheels loving killing them before they compute pate. tiny stones end ensued because the grain is cleaned before it's processed for organic

farmers like nicholas cozen bag, being able to detect weevils at an early stage and control them organically. is a huge step forward. is that humans of us the hallmark of who i can with great having something like this is an early warning system. most farmers have problems with weevils, even if they say they don't want. we've taken a very upfront approach because it is a problem by the last year in particular, because of the high temperatures we had in the winter months. so without cold periods, the books have even more opportunity to reproduce. it will be the last year and that became one of the 1st to join the project in the german state of brandenburg back then. this grain silo is full but not just with grain, pests and bread explosively within the crop. the sound tube, which is still hanging inside and will also be used again this year,

raised the alarm immediately by the microphones and related computer program. the research is saved last year, sound recordings. this is what the insect sounded like. this is off now. this is a recording from last year. the little lava is sitting in the grain, eating the inside of the grain, colonel piece like pay half and when it's eaten enough and it enters the pupil stage. and then at some point, it emerges from the grain as an adult weaver also comes most i'm calling with global warming means the grain we will in similar pests are a growing problem. but a possible solution appears to be on its way. there are plans to market the sound tube as soon as the test phase is over.

that wraps up this edition of tomorrow today. join us again next week for more exciting stories from science and technology. until then, they carry and keep asking questions. who's who's the, who's

the the, the, the the ah young can immigrant they know the police which they know that the route is not a solution. they know their flight could be fatal. like going back, not an option. the shattered dreams me in 75 minutes on dw.

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ah was who's this is the w news wife and berlin are medias prime minister secures another term in office after snap electrons. nuclei pushing yawns. party wins over 50 percent of the vote. as a result that is like bigger surprise many after armenians disaster setback in its recent war with neighboring as a by john hopkins. also go to the polls in an election long delayed by the krona virus crisis. voters give their verdict on prime minister abi smith.