Stay tuned for all this and more coming up on dw science show. Welcome to tomorrow. Today, the seasoning hot heat waves are becoming an increasing problem in urban areas around the world. Rising temperatures and humidity can also lead to torrential rains with stormwater. That can overwhelm irvin, drainage systems. But architect christina ice and bond has come up with a solution here on the 10th floor of an adaptive high rise built by the university of stuttgart and south western germany. Shes been testing her idea under real life conditions. So our approach involves creating surfaces and Building Designs that can absorb rainwater, which can then be used in the building and later on during a hot spell that water can be used for evaporative sustainable cooling. How does this person lucian involves special textiles called hydro scan elements that are attached directly to the facade inside the high rise, there are special tanks that store collected rainwater. On hot dry days, this water is returned from the tanks to the facade element. The windows are covered with 2 lightweight textile skins which are separated by a porous space or fabric that allows the air between the 2 layers. To circulate the water can evaporate, helping to cool the buildings interior and improve the microclimate outside the building. Looked into this metals before. If weve discovered that if we were to equip this entire building with hydro skin and also we could cool down a specific volume of air by 10 degrees celsius in cartersville. Paved surfaces and the lack of trees and vegetation are also heating up our cities. And turning city roads into rivers after a heavy rainfall. The hydro skin facade elements can make a difference here to in a down port. They remove some of the excess rainwater and funnel it to the tanks. The rainwater is 1st collected by a file on the inside of the element, which then drains the water down into a profile system. That water can then be put to various uses for flushing toilets, for example, or to cool the building. And test show that the system works. And we installed more than 50 sensors in our test stations, plus one weather station on the facade, and one on the roof sato. The sensors measure how much the facade is cooled during hot weather. And how much water can be absorbed when it rains . Test station 2 shows. There were 640 grams of water in the back system. After about half an hour of rain, there is 974 grams of water. In principle, the textile can absorb an unlimited amount of water. What matters is the profile system. In the profile system, the water pints and metal frames determines how much water can be captured in a downpour long. This here shows how we refine the technology item. This profile system is large enough so that it could handle a once in a century rainfall event, but still slender enough that it wouldnt interfere with the architect tonic anesthetic aspects of the facade. Pushing upon in many cities around the world, Sewage Systems can no longer handle the run off from frequent storms. So rainwater retention setups will become ever more important. Christina, ice and bonds, hydra skin system, is made of Synthetic Fibers that are almost completely recyclable. And instead of bouncing off the text style structure, the raindrops are almost entirely absorbed, making for a very efficient harvesting system. The architect drew some of her inspiration from tex downs, used in other industries. And theyre also used in the Automotive Industry and car seats, for example. Why is that . Because people dont want to sweat on long drives and they want their sweat to evaporate quickly. So the material encourages air circulation. Thats also useful for our work, since it helps the water evaporates and enhances the cooling effect for stack architects have long been familiar with the principal of evaporative cooling. The new high tech hydro skin fabric is an extension of that principle. And its so lightweight that it can be retrofitted on most any building that i should take. As an architect, i can imagine all sorts of design possibilities, beginning with different colors, patterns, logos, and images, or even incorporating movable elements onto the facade which could be pushed back and forth, folded in and out, or even flipped back and forth. And the possibilities are almost unlimited. Water can make urban heat. Pilots more bearable, much like a fountain can cool us on a hot day. Eclip with evaporative facades, entire buildings could create sustainable cooling micro climates. And that might happen much sooner than we think. The hydro skin fabric has already been patented in a down for when 15. 00 to 25. 00 leaders of rain per square meter fall in just a single hour flooding can be a real problem. The simulation for this, we just city of golf and birds shows what can happen. One problem is that most urban spaces nowadays have been paved over. The rain can be absorbed, leading to flooding. Due to Climate Change programs to weather proof, our cities are growing increasingly important. Hamburg and northern germany is leading the way Climate Change is bringing heavier rains and increased flooding to many areas. Come back, gemini is no exception. Fonts. Why i chose to just, andre is cool. And becca wants to help with it and watch it pretty much the city defendants. Bullshit. Some vendor, we can only protect ourselves if we know how big the button will be in the future. Let me and if we dont carry out measurements, what we can do is guess of out to the scientists to set up the t y, the stations that send him data from every corner of the city. These precipitation gauges show how much rain has fallen in each area. And one of them i know for this is basically a time to collect the precipitation to meet our flock ultman and then it weighs it using a very precise scale mist. Yeah, we can see in real time how much rain is full and in this location they stay to refuse to calculate what might happen in the future to mrs. Shown investor good at c, and then we need to understand what would happen if we had a downfall with an intensity of 8 or an intensity of 10. Missed the name of ok. Its better if we dont wait until we actually have that kind of rainfall event. The more than the said feet are models with our data and use the models to predicts what happens again, go to those origin shockey. This kind of weather data will help them and this up a Water Authority plan for the future. Andrea is cool and becca and his colleague andre aspire are using new Simulation Software to generate a model. So handbook. They can now generate predictions that every address and location in the city using the Simulation Software that testing various solutions could a trench in this city park helped. Im good. Accept raymore to me. Its just, i wouldnt make it too big. I dont think its necessary. Lets, lets start with 10 centimeters. Okay. Okay. Okay, sounds good. On the other side of the street, a retaining wall could protect the houses. They sketch it in and the software calculates where the retaining wall and the trench with dimes, it will to canada to check it, raising it made a difference often right . Yes. Okay. The water only reaches the curb and Everything Else flows towards the park just the way we want it to. Another nice position in the park. The ground will soak up the will to one example of how honda is being turned into a sponge city areas where water can save into the ground, green rooftops, water permit surfacing and rainwater tanks. A real part of the package rainwater will be put to good use right on the spot sustaining plants doing heat waves and allowing for evaporative cooling, making 100 more climate resilience, 10 victim dish, dr. Turning the city into a sponge, city would be beneficial in 2 ways. On it, so 1st wed be reducing the button, its heavy rainfall and wed be reducing the burden of long dry spells. It seemed that even last one, but on top, so wed have a win win situation. A big one. Also protecting our drainage and Drinking Water supply systems between the federal also steam. The cities schools are all started getting in on the act. This school yard is being re thumped in accordance with cooling back in simulations, environmental engineer of and Politic Center is in charge. Its another layer and the transformation of 100 into a sponge city. A city tilted with areas that could absorb water by not almost all the roofs drain into retention basins. That is several advantages, but its good for the natural water balance and helps replenish the ground water plus the evaporation from the base and hopes cool down the city and crude. An effect for the stop sema gives to you. Here you go to the top of the embankment on the top right under. Yep. I most popular tied . Yeah. Phone doesnt were 9 meters 90 me. Dont know, unsafe. Okay, all right, lets see minutes. Andre is cool. And becca enters the new base and into his model. On ones. Mm hm. So its amazing how much it base and let disconnect. So im kind of does this price is a nice to the bottom on how we come up with an idea of in say, it reminded me to do all sorts of measurements and simulations one. And then we want to become a reality here in the school. We often easy at that and this was next. Its one of the great parts of our work. And its usually mostly a 19 year old son in all a number of other areas in this school year out of this, theyve been turned into sponge. Its like here, behind the school, you have to explore jerry is a mass fault, were removed here and replace it with a water permeable surface. These that allows to bring water to seek them to the ground water thats hands in school. As you can see, the water 1st starts the flow, but pretty soon it gets absorbed and then flows down into the ground water. The rain helps keep the soil here moist rather than just ending up in the cities sewage system. Since we should be fine, whats important is that we get started getting that we start trying things. Im gaining experience bit by bit and smell and morgan at a later generations. Well learn from our experiences and maybe improve on it device to pass on off. And as we have someone has to take the 1st step in which im gonna begin by working with Walter Robinson against it. And the is implementing nature of a solutions for a sustainable feature with minds about science technology. Thats why dw signs is now on take time. What do we do for fun . Why do gravitational ways that that is when the people begin getting high and laughing gas out of the drums boogie to the beads. And whats the perfect kid football find . Find the on says gets most dw signs on new, tick tock channel. What is read . Why are they if you have a special science question, send it to us as a video, text or voice mail. If we answer it on the show, well send you a little present as it thank you. Come on. Just ask this weeks view or question comes from p g in south africa. Is there a difference between clouts and folks . Physically speaking . No, because folk is nothing more than a towel to the ground based consist of tiny was adopted. Slicing in the these dropped slips of foam twin wolf to a desperate storm lakes, rivers, or ocean. The world today the closest it rises and condenses. The main difference between salt and clouds is how high they are. If its cold enough near the ground for roots of april, to condense that forms of visible marks, this happens most and colton and winter. As soon as the massive boots of acreage stripped server ability to see beyond the kilometer away, we couldnt smoke. All other visible accumulations of water vapor includes clouds. Scientists differentiate between a total of 10 types according to the around to cheat. High level clouts, also known as cirrus clouds, farmington altitude of 5 to 13 columbus because as its very cold, the, the made up entirely of ice middle clouds phone between 2 and 7 kilometers above the ground. They include a type of cloud, noticed ulta, cumulus, low level, klaus, a cub, a low, a heights of 2 kilometers, some light, the straight to scout a, so close to the ground that well see referred to as high folks. The best cool cloud 6 done very for several layers, like for example, the cumulus cloud, which also looks like a cauliflower at the top. The molten house of the surface is typically covered by clouds, advice, clouds and soak planning to to roll and meteorology. They regulate the schools to balance and have a big impacts on the climate the clouds fog and miss direct kind of atmospheric water vapor in places that are especially parched into air. It harvesting water from the clouds could make all the difference. That includes regions like the middle east and north africa, and particularly places where the clouds are practically close enough to touch the Early Morning clouds of gathering and the mountains of ground come out in the strange structures will capture them on the phone or leave a is an environmental technician with the life and you have a lot of projects here. Hes showing a trainee the principal and based on natures model, obviously going to link it, but it has like an extra moisture from their low middle. Im afraid he got locked up. They sucked it up. Its like a small issue the, by the view unusual instructions take advantage of a common phenomenon on the north side of Spains Canary islands. Crowns move in from the atlantic. Stall on the mountain sides shone or leave under his colleagues of setup for collect as cloud catches fell on monday they soak valuable both in the same way. That like im to do a name on my you dont the letting me ever let go. When push as far as the into these financing. The idea that by putting back to in lubbock, a tiny water drops the grow into a bigger transition there by hitting it out of what that is, which then fall into the collect the flow into the tank. So lets do this. Im gonna put a roller, they heat allow us, you know, until theyre both in total. Theyve collected 90000 liters of water over 2 years. Water is gas on grand canal area. The reservoirs of running dry. The art conditions im making wildfire is more frequent in 2019 and was hit by devastating fire 10000 heck to as far as phone down. 9000. 00 people have to be evacuated. That well see the look as it goes. He said, thats what he meant, that its a vicious circle below. Got here. The lack of water means theres less healthy for it goes on to the way the and everything this rise on 50 because here, cuz this is her name with the, our fuel 50 for the fire. The funny little bucket for the was full. So the reformers think, planting trees, species that will make the forest more resilient and they also use more to from the cloud couches they ask, the florida will force to grow here again that will work like a natural fog catcher has left on cnn trees. Take the water from the clouds and pass it came to the ground willis internet. So that means it could be the future of the island. And i see for now the, the present is dominated by agriculture. Economically, the canaries depend number non across. But each tree needs 20 liters of water a day. One where im on source works. I plantation in the north, a drunken nadia. Hes worried about want it because rain is becoming ever more scarce. The never let me see what there is one option, the treating it as expensive over there with incident double kiddo, thats what i really will do about the good large scale fields of thought catches in the mountains, be a solution, the solid or leave trusts, and the Research Project is working on new ways of capturing moisture from the cloud set or yellow. They expect this metal grid to a much more efficient than the plastic match theyve been using sofa. So might have been the goal, so not too badly using a sustainable and Natural Resources like fog could be a good solution to figure out if it is. Yeah, but uh, we could water our tree seedlings with it and everything was done and a farmer could use the water was on the plantation when they go down to the, the, our so that to work the crowns would have to continue gathering him in the mountain sides if there is a change in weather patterns, cloud captures might also the full victim to Climate Change. After years of extreme drought and late 2023, a short rainy season brought exceptionally heavy rains to northeast, down for a code. The ground was so dry that it couldnt absorb the water which led to severe flooding. For one of the water could be stored in the sand to help balance out the cycles of droughts and heavy rainfall. In kenya, local communities have begun implementing the sustainable solution. The honest, a, c, m, a loony is working for her future. And the future of her children and grandchildren. Together with other residents of oakia in southern kenya, theyre building a sand down. The water stored here in the rainy season will help sustain that community to in the dry season. Draught in the area was not so nice visual stuff. We couldnt move long distances. So we decided, how can we stay in this direction for a long time . Kinda mixed up sometimes the, because of the what, uh, no idea. The mach wendy region is no stranger to extreme weather. There are 2 short, intense rainy seasons each year. But the rain water seats away almost overnights and the rivers dry out the sand down. Well store this rain water in the river bed and keep it from evaporating as quickly they fix the sun to us. Is that the, it at this point thats a collect and a stores the water and basically um send, uh will provide the medium where the, the, what i had to start within the, within the funds wanted me to be law will not ever for it. But it shouldnt be available for the communities local communities do most of the work themselves. Its not always easy to find enough volunteers digging is hard work. Building the dam costs about 2000000 canyon shillings, or about 15000 zeros. Its made of mostly local materials, like rocks and sand. Once theyve collected the local materials, then the other thing that you need which comes from outside the communities this, i meant the state that is useful, this tabulation of the dumb and swipe plus the team. But you can see which ones they form like of the fund. Im not far away. Theres a completed send. It can store up to 50000000 leaders of water. A boat for farmers like peterman gucci. These days he can pump water directly from the river. He mainly grows colored greens, tomatoes corn and let us and his crops are thriving, the whatever the family doesnt need is sold at the local market. The water from the dam has made a real difference. I mean, we were supposed to plant trees, but there are no trees without water. There were so many challenges. We used to grow vegetables here, but when the water disappeared, everything withered and died without degree. Because imagine youve got coke. At 1st glance, its dry as dust here, but appearances are deceiving. 2 meters below the surface. There are millions of leaders of water all filtered by the sound. The dam has been supplying the surrounding community for 4 years now, even during the dry season and room lucila explains how it works. We have the great war which enables the store to ent, of water. Then thats what a see what the through, by bought at that bytes to the some, via and from the some. But what i pumped to start and dance, where the communities i bought to draw what the for human consumption or the rain that falls here doesnt just evaporate heat stored underground. A system of pipes linked to a solar power unit. Pumps the water to storage tanks. People here canal grow new varieties of crumbs, ones that need more water. We brand even groves, which we are not able to be brando dean, daddy, thank you for i do business. Who could do brandon . Where they is brand new. What i need those audio we received corps underwood climate, but you know, we have our dunden with so we can also watch tv. The same women also benefit from these local sam dams which receive much of their funding from our can. Nova a Foundation Based interest in germany, instead of walking long distances to fetch water women canal, fill up their canisters directly at the local water kiosk. During the walk this on dumb luck, i size grace epic on the patch of what we do during our community. Mobilization is to encourage the communities to be part of the process from this dr. Event. And also we emphasize on the importance of them, but the spacing at every stage. Defendants may seem simple, put for local communities, they can make all the difference. Their hard work here will pay off now and in the future. Thats all for now. Thanks for watching tomorrow today and do join us again next week for another edition of dw science show you that the the they are abducted with promises of vacation, ukrainian children. But they find no safety in russia. The rest of the cation, the children are forced to live with new families and are only under moscows watchful lines, stolen by russian snows in 75 minutes on dw, the get ready for an exciting. Ive been trying to look surprised. Hi, irish. And im ready to dive into the hands of human to us. You have you have a one to delete it from port on it. Please go to the spot on the on expected side to side. Do you know which of these 3 industries has the highest c o 2 emission rates . Would you guess concrete . Transforming business to live is on to figure out what a real new deal but just reimbursing the wash. Now the kid turkey is changing 6 years ago. He said he cant get any was, but it does guardians of truth. This time excel jim, this john, do not meet the voices of the 3 turkey. O sir. As the other one had to flee into exile, i knew the police would search my house. Courageous people are trying to stem of the turkish governments all sort. Tammy calls us some kids and whatnot, but really its a crime is addressed and the path of trying to take responsibility for his action. What about freedom of the price and freedom of expression . What about parliamentary democracy to the situation is very serious. Cutting as right as not only weapon is off and the guardians of truth talk. March 2nd on d, w the. This is the w news. Live from the in the us. Vito is a Un Security Council resolution cooling for an immediate cease by a and gaza. Washington says the measure would jeopardize efforts to broke hostage steel. Meanwhile, the un says it is pausing food deliveries to parts of gaza due to the slicing is also coming up on the Program Brochure bands, radio free europe, radio, liberty, labeling, the us funded broad cost a quote on desirable organization and honoring a legend of cinema. The button Film Festival pays