and again, wild lobby and couple late and burned in south africa. people in disabilities more likely to lose their jobs. in the pandemic black lives matter, shine a spotlight on racially motivated, believes my same sex marriage is being legalized in more and more countries, discrimination and inequality. or part of everyday life. for many we ask why? because life is diversity. make up your own mind. d. w. lead for mines with, ah, noise is everywhere and noise is making a sick. premise under all i can hear are the trans, we can sound proof as much as we like your voice. many people can't get away from

the clamor is would immigrant. i'd also like to see cheaper rental units making use of good solutions like pays. mm hm. come, the natural world can also inspire effective solutions. i'm here guns, guns where we can really see here is that the entire bird is covered with down. and that also makes the system really quiet. all flies of our world has gotten too loud . but what can we do about it? but yet not, and that wasn't christian pop could be described as a noise whisper. he and his colleague oliver read won't to free cities from noise. they work on behalf of local authorities and property developers. that doncaster, thanks. that's now calibrated to peak. let's see, ah,

street noise in hamburg is part of daily life. more than 70 decibels of the norm. on the main roads, tens of thousands of residents were exposed to excessive noise levels. leaving here his stressful dilemma. noticed article of the ball at the noise reverberating, the vacant building lots. that means you can't sleep with the window open. if you want to stay healthy here, you only do have to keep the window shut. the sound penetrates deep between the rows of houses. noise is measured in decibels. the medical recommendations are a maximum of 65 decimals during the day, and 55 at night. here it's 71. well beyond levels considered healthy this because noise makes this sick too much noise leads to insomnia. high blood

pressure and cardiovascular disease. acoustics, expert christian pop, wants to help reduce noise levels on main roads. but in the 150. but as far as noise goes, yet in the case of people who have less money to go to live in places where rents and property prices are lower, these people are stuck and can't get out. on miss tribe, i want to make their situation more bearable. and also get that message across to policy makers in a way that understand to come on its ear after all. sessions hold the purse strings because it's experts are also helping to reduce the clamor at this junction. emerson will need to see if we can close this gap to quiet and things down in the rear courtyard of the building to my discharge. looking out onto the street that just one day, they would really benefit resident photo. presumably the trees will have to go, but we'll managers, let's work out some castings. yes. ok. the noise reserve rates between 2

apartment blocks and the re court yard. for 30 years christian pop and his company lamp contour have been developing solutions for quite a life. his idea then gone to the floor plan of the adjacent building allows for it . we can erect a structure in between that will also incorporate apartments one apartments, the face, the interior courtyard, or the quiet side license either sound insulation and new apartments. here, noise prevention could deliver to benefits at once christian pop is called in as a consultant to advise on similar problems elsewhere in zurich. for example, here, cargo trains rumble directly past times. how can these apartment blocks be protected from rail noise or flats loud it will. yeah,

very loud a lot. and it's more sod is an internationally recognized acoustics expert from siri. he's us christian pop for some help. now they're joining forces to fight the noise. zurich is a key transport up, there's a lot of movement and lots of noise primarily in the industrial zone to the west of the city. hello. did you hear it as a short? it was loud enough from there to there and all the way up. until last night has been working for the count on the zurich for years. his job is to protect residents from rail noise and i'll do it again. oh, oh. what i knew was surfaces. i see around here. those are surfaces to lift. they reflect that you can hear it. a cargo train is approaching soft and 2 passenger trains. yeah, that's crazy. other signs,

almost within touching distance, whom listen to how these low frequencies coming from this monster. so close by, dominate the scene like a sy fy movie. stay in the past a f, as in. yes, those are low frequencies that can't be absorbed anywhere. they reverberate along these waters and ventilator can return from behind, like a store from the side front as noise on minute. every minute is the 17 meter train sides create waves of sound. it's like a wave puller mountains of noise coming through and building up again in this passage, i get even louder back there than they are. hear loud noise is a registered, subjectively glitchy, lighter sound. the more intrusive it's going to be more so at night when you're sleeping than during the day building modifications may help you to but what about the trains themselves?

i think was had a credit of, of torn i must take a closer look at the source yet. and there are many options there. the, we'll track noise, for example, can really important that as a nash. in other words, on the tracks i need to have wheels that are perfectly round tracks that are really smooth and drive systems that are well soundproofed. there's potential that out of n. quieter trains are already a reality. oh and up in it, things are changing to when planes take off, the noise is deafening. but when an olive sauce silence, what are the i'll fly so slowly and quietly that his prey are taken completely by

surprise. i was as a yonder in his colleague michelin here, want to know why otto is able to fly so quietly to work at the german aerospace center in branch like they're involved in a project to make planes quieter. and your inspiration comes from nature among the one in hunter. i've an unseen a lot of holes market. i can't hear guns got. what we can see very well here is that the entire bird is covered with down loud. it's really, really soft all over of the sound under the wings as well. went out and he's such a charmer. i'm from her an air here when he lets his feathers hang down like this on it. we can make out

a front edge structure with tiny little teeth. that's wouldn't be, that's something we aerodynamic engineers would call turbulence generators. it means we can fly extremely slowly and to prevent stall. and that also makes the system really quiet, outline, feathers and down the research is also particularly interested in the soft trailing edge of the als, when i sticking on a brush like edge research is try and soften the reassign of an airplane wing. previous experiments with the survey should edge like this, produced a similar effect. he'll evacuate kennedy that we're familiar with the serrated edge solution must come. what more can we expect from the brush hoffman? therefore, the advantage of the brush is that it's actually directly aligned with the direction of flow, which more or less, eliminates the edge. in the wind tunnel is blown over the prepared edge. it 14

meters per 2nd. the microphones record the exact points where noise is created on the wing. the difference between the wing with and without the brush is calculated in the monitoring lab colors. make the move differential visible bread. his lout is any in any country it has phyllis and, and a hint i can. what we're seeing here is the contour of the wing and on the rear edge, the source of the sound in the original where we've not yet applied a bra shotzel. and now the difference, when we apply the brush, we should see a clear reduction, and indeed you see that everything that was read before has gone away. or in other words, we've significantly reduced this sound source. you can see it very clearly. the brush itself has been very effective for some reason. the brush on the wing h reduce to sound by a 3rd research, bright sous light is brought to life in the hanger. as the aerospace center,

together with his team professor dealt is found way to apply the soft trailing edge principal to the landing flap of a plane wing. yet some via the land toys as vice. now we've learned by softening the transition from trailing edge to free flow. we can reduce the sound that in this instance we haven't used rushes or other things. we've implemented it with a material that's permeable to air flow. lessing mateusz sort of sponge, but made of metal that significantly reduces noise creation on this trailing edge so long as i found against. oddly enough, this modification alone reduces noise by 20 percent with the potential for much more across the entire plane. there are many chromosome edges to research is can target it longer than via alamos. now we think if we took all the measures together, we'd reach between $4.00 and $5.00 decibels for the entire plane. i and that's

a considerable amount as a sean, an inch medical issue. a plane taking off without moore's reduction and in comparison assimilated takeoff with always the juice measures class a pearls ah possible aah! conquer trains are also extremely loud. the noise is making people in the middle right. dolly sick? why can schmidt's nice son, his wife brigitte? are a sound proofing, the house, it again is shown explain here home to launch their gale. the volume is really quite extreme here on mostly at night. when you get those ancient cargo trains going off that squeak and rumbles, you know, it's really unpleasant. they said sit,

we're not going to slide as i've had insomnia for years. when i'm lying awake in bed, all i can hear are the trains that we can sound proof as much as we like. it doesn't make any difference or your voice ballpark in the middle. ryan valley lies on the north sun axis between rotterdam and genoa. the picturesque middle rhine valley is the eye of the needle on this rail freight corridor. every day. 400 train speed through villages on both sides of the rhine. residence a demanding of 50 kilometers per hour, speed limit, and night time, ban and quiet at freight trains. nearly impossible targets for germany's national railway company deutsche a bon high speed passenger trains run on the same tracks as the cargo trains and freight volumes beset to increase its slope. the so called whisper break and provide some relief over the past 2 decades. deutscher bon has invested 220000000

euros in the retrofit. thanks to the whisper break the running surfaces of the we'll stay smooth. before that become rough with every break application. this move to the wheel and the track. the quieter train. researches in switzerland are already step ahead and developing innovations beyond the whisper break. here, research is being carried out on the train will of the future. with glazes and computers using data from the actual will. research is designed, digital models, simulations of new quiet wheels created on the computer. that's right there on top of what it acoustics expert christian off is a frequent guest here. the project to develop the new super train will is happening

at a swiss lab known as empire located music. does the jaws it looks like a loud speak of it moves. that's essentially what it is. what you starting with. yeah, and we want to make models of the wheel vibrations that are as precise as possible with a base have up to now further development tended to follow the trial and error principle . and it was really time consuming on the basis of our models. we're aiming for precisely targeted optimization to move to market. the advantage of this purely virtual method, it helps researchers save time and money in their quest to invent the quiet train wheel of the future. mess. you can only measure what already exists dba and we want to develop something that doesn't exist yet at the vibrating. now, that's a disc, is it? yes versus what if you press pokes on it, that's the builder. it certainly be better, but not as robust as computer. yes,

there are a few other constraints. i think that sure a spoke will would be better than a full surface deflection away from that yet. i'm sure we'll get there and we'll be back in 2 years with pleasure. before a stout wheel makes its way to the track, this much want to be done. but already there are effective ways to further reduce rail noise. the whisper break has been the standard for years in switzerland. but for some people here, that doesn't go far enough at this factory site, just over the board room, the northern italian town of gustavo, a cicio, thousands of we'll set a service, repaired and stored here work is underway to further improve the interplay of wheel and brake solution disc, brakes for freight trains. director leonardo for go explains people toyota device.

how does that work and left breaking the carriages with the latest innovation. avelo nick, we've got a set of wheels but with an access it has to disc brakes. honda there and the carriage brakes on these desks with the brake pads need the the blanks beleaguered . the described wheel is currently the best and above all the quietest available on the market. this is because the wheel isn't braked on the trade by a brake block, but on the extra discs, this is jennifer on the wheels, keeping them smooth. with dis breaks. noise is reduced by another 30 to 40 percent compared with the so called whisper break. the following simulation shows the audible difference between whisper and disparate the noise reduction is clear. refitting cargo trains. yet again, this time,

changing, whisper, brakes to disgrace would be the best solution right now. but it's expensive. hope from the e. u. is it too? and she'll all rally companies get on board. no need to hire me. you will be this is only going to benefit the railway if we have a european solution, i love it. otherwise it'll just be nice and small scale, not a europe wide solution. and that's a shame on that this child disgrace, the quietest solution fits a day that is, until the eventual development of the even quieter spoke. we'll come by the button behind the staple is nice cause to hamburg students to come up with a completely different approach to reducing noise is up a lift above the fish market and it was always loud to come to british. i grew up in a village and i just wanted to sleep the windows open and that didn't work full to

near the fish market. got on my nerves every sunday. while at hamburg technical university, the 2 worked on further developing a system to reduce noise and founded a startup full years ago. from elling is an electrical engineer. he wants to make construction vehicles quieter for the people who work in them. his partner is c, e o. lucas hinkle as delmark loft. well, the to inventors experiment with what's known is active noise cancellation continental or simply explained, we cancelling out noise with counter noise. i imagined it as 2 waves in the ocean hitting each other. not at that precise point where they meet a particular frequencies. it's quiet until they're noise cancelling. system aims to

protect construction workers from noise without headphones on of a baby usually cries, now her 3rd. exactly. and all the um, irish spray large critical to loudspeakers in each of the chambers. several microphones here on the surface, behind the grid at her and on the reverse. and we've got the processing unit which calculates the noise reduction signal blizzard in milli seconds. the unhealthy noise is altered less industry and essentially we're creating a quiet zone around here where the drivers left and right is are, and within this quiet zone we're able to reduce low frequencies. and since a little see on the system aims to reduce noise by 50 percent which could make his life easier. michael shipment operates this kind of machinery after 8 hours a day that the ears take a real beating on the evening your toast time. plus it's time

to try out the device at a testing site for construction machinery, instruct at a mine most reduction without head fights, which are practical on construction sites. wearing them too often can result in ear infections. machine operator michael stigma is going to test the prototype under normal conditions when and, and then i just like you to go for it. just do what you always do was did some nice big holes and use the bucket a bit. ok. we'll do about super of you go have fun. can the pounding ra produced by this 25 ton machine really be canceled out? the answer at to push a button at the moment. this is also the shot. so it's switched off at the moment. you can hear

the muffled droning of the engine. i saw that as soon as you switch it on. that's why the droning has gone on. you can still hear a bit of background noise, but this invasive droning that's gone. the 5th significantly quieter. ah, well, on money you can hear the difference. that muffled droning. yes. that humming? that's exactly what we're trying for. the low frequencies under 500 hertz, a canceled out because this machine works at very low frequencies. the spherical radius is especially large, 30 centimeters. that means if you lean forward slightly, you should still feel in effect if you leave this papa would, you won't be able to hear it any more. if you lean back again, you'll notice how the frequencies gradually fall away

on better with or without the device. with the device you can leave it installed. great, and thank you very much. take care julian that we've been able to help the driver like that's not, that's exactly what we're aiming for. genuine feedback from the people who be using the device. the test was the success. next you the to entrepreneurs plan to sell their 1st noise cancelling systems at $4000.00 euro a pace. one is the best solution for reducing traffic. noise has become a reality for christian pop, a residential moist berry at this major intersection in hamburg, ve tuesday expert and his colleague oliver rick assist you glass pool. he closes off the corner door between the old and new buildings. the wall keeps noise

out in the interior courtyard, quiet order. they used a special camera to monitor how well it works to yamaha little. hm. all of them are coming up. let's see if we can capture it with the camera. oh yes, we can hear it, especially when cars drive past the acoustic camera makes sound visible. it's used to test whether the wall is properly sealed. yellow and purple spots signal gaps in the sound barrier. the wall largely does its job with a few weeks spots. it shields the courtyard from noise coming from both main roads . here we're where this structure now stands on this side, but used to be the street with sidewalk parks and such. the older building was

unprotected of his ish far sir. the building on that street now protects this old buildings and these walls or create a tranquil in a courtyard. and so the noise barrier has also created living space. 62 tenants have moved in kitchens and bathrooms faced the road with living rooms and bedrooms at the rear a quiet time even for those who live on land, city streets and can't afford a house in the country. that's when a christian pops main goals. so like at assassins i cares allows traffic as loud as we're experiencing it currently along as in depth. while we do have good solutions here on these are privately funded and not cheap discounts, but i'd also like to see cheaper rental units making use of could solutions like these are, wouldn't rosamond out for medical more piece at last.

something many people are looking for then to make it happen there a whole host of innovative ideas. we can make the world a quieter place. ah ah. ah ah, with

ah, because of the toxic waste extreme, this is for you and her. she true her last breath. ah, she breathed mamma, and at that moment i lost her children, played in the pile of toxic waste,

which was full of arsenic lead and mercury. and i had to wait came into sweden dusty business. how toxic waste poison ivy todd, including in 15 minutes on d. w. she's ukraine's 1st female train operator victoria coach. this has always been her dream job for just a few years ago, getting it was unthinkable. discriminatory regulations prevented ukrainian women from working in traditionally male professionals, but the war has changed everything to focus on europe. in 90 minutes on d. w. o. every day counts for us and for our planet.

global ideas is on its way to bring you more conservation. how do we make cities, reader, how can we protect habitat, what to do with all our waste? we can make a difference by choosing smartness solutions over stains, said in our ways global ideas, the environmental series in global 3000 on d, w, and online. will you become a criminal m franklin may i already know who's with hackers and paralyzing the tire societies? computers that out some are you and governments that go crazy for your

data. we explain how these technologies work, how they can go a rule simpler. ah, that's how they can also a what you know new to ah ah, this is be news live from berlin. pakistan's former prime minister in mon cause survived the shooting at rally. he was wounded as he led to protest, demanding that election. police have arrested the gun clos, unoccupied.