i, i am shopping and i am ready to dive into the hands of gentlemen to up with you. have you have a window? do you need the front porch? and the unexpected side to side. the last year was a year of extreme weather, extreme storms and lived yeah. extreme range. for example, in brazil and extreme heat in greece, the scientists say that climate change is going to make stream, weather events more frequent. how can we prepare our cities and rural areas for this new future? stay tuned for all this in 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 urban 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. she's been testing her idea under real life conditions of our approach involves creating surfaces and building designs that can absorb rainwater name which can then be used in the building and later on during a hot spell that water can be used for evaporative sustainable cooling. i had her solution and involve special textiles called hydro skin 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. and that also the point is that we've 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. behind ro, skin facade elements can make a difference here too. in a downpour, 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, your house and we installed more than 50 sensors in our test stations, plus one weather station on the facade, and one on the roof. although the sensors measure how much the facade is cooled during hot weather and how much water can be absorbed when it rains. the test station 2 shows. there were 640 grams of water in the batch. after about half an

hour of rain, there is 974 grams of water. in principle, the textile can absorb and unlimited amount of water. what matters is the profile system. in the profile system, the water pipes and metal frames determines how much water can be captured in a downpour with 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, rain fall event, but still slender enough that it wouldn't interfere with the architect tonic anesthetic aspects of the facade. pushing on for fun, here. 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 tech style is used in other industries. and they're also used in the automotive industry and car seats, for example. why is that? because people don't want to sweat on long drives and they want their sweat to evaporate quickly. so the material encourages air circulation. that's 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 it's 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 slipped 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. that's why i chose to just, andre is cool. and becca wants to help with it and watch it pretty much the city defendants worship some vendor. we can only protect ourselves if we know how big the button will be in the future. let me and if we don't carry out measurements, what we can do is guess of after 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. so then one of them i know for this is basically a time that collects the precipitation of the new york block ultimate and then it weighs it using a very precise scale. just yeah, we can see in real time how much rain is full and then this location they stay to refuse to calculate what might happen in the future. this is shown investor good to

see 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. it's better if we don't wait until we actually have that kind of rainfall event. you more than a said feed our models with our data and use the models to predicts what happens if a game go to a bizarre in stock, right? 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. i'm good. accept raymore to me. it's just, i wouldn't make it too big. i don't think it's necessary. let's,

let's start with 10 centimeters. okay. you 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 check it, raising it made a difference. let's good buffed out 0, right? yes. okay. the water only reaches the curb and everything else flows towards the park just the way we want it to nice position in the park. the ground will soak up the will to one example of how humbug is being turned into a sponge. city areas where water can saved into the ground. green roof tops, water permit surfacing and rainwater tanks. a real part of the package rainwater will be put to good use right on the spot sustaining constituting heat waves and

allowing for evaporative cooling, making hundreds more climate resilient, 10 victim desktops. turning the city into a sponge, city would be beneficial in 2 ways on it. so 1st we'd be reducing the button is heavy rainfall and we'd be reducing the burden of long dry spells. it seemed that even last on, but on top. so we'd have a win win situation to in, but also protecting out drainage and drinking water supply systems between those affairs also steam. the city schools are also getting in on the act. this school yard is being re thumped in accordance with cooling back and simulations. environmental engineer of been in sweet accent is in charge. it's another day in the transformation of humbug. into a sponge city. a city tilted with areas that could absorb water by not almost all the rooms drain into retention basins. that has several advantages, but it's 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

. so to stop sima, give it to him. here you go. to the top of the bank. i don't know the top right under. yep. i must 100 tied. yeah. phone doesn't were 9 meters 90 made on the ones each. okay. all right, let's see minutes. andre is cool and becca enters the new base and into his model. on ones. mm hm. so it's amazing how much it base and let disconnect. so i'm kind of that this price is a nice to model. we come up with an idea of inferior religion. we do all sorts of measurements and simulations one. and then we want to become a reality here in the school we often is you have to build an assessment. it's one of the great parts of our work. and it's huge. you moved your 19 year old son in on a number of other areas in this school year out of this. they've been turned into sponge. it's like here behind the school,

the blower, jerry, is a mass vault, were removed here, and replace that with the water permeable surface is that allows to bring water to see them to the ground. water has 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, what's important is that we get started getting that we start trying things. i'm gaining experience bit by bit and smell and morgan at a later generations. we'll learn from our experiences and maybe improve on it to nice to pass on off. and as we have, someone has to take the 1st step and what time i begin by working with walter robinson against it. and i guess implementing nature of a solutions for a sustainable feature with minds about science technology.

that's 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? the drums boogie to the beads and what's the passa king footboard find? find the on says, gets most dw science own 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, we'll send you a little present as of thank you. come on. just ask. this week's view or question comes from p g in south africa.

is there a difference between clouds and folks? physically speaking? no, because folk is nothing more than a town to the ground. advice consists of tiny was adopted, slicing in the these dropped fits of foam twin wolf to a desperate storm lakes rivers or oceans. the world today because it rises and condenses the main difference between salt and clouds is how high they are. if it's cold enough near the ground for roots of a put to condense that forms of visible max, this happens most angleton and winter. as soon as the massive growth of acreage structure ability to see beyond the kilometer away, we quit smoke. all of the visible accumulations of water vapor across clouds. scientists differentiate between

a total of 10 times according to the around to cheat. high level clouts, also known as cirrus clouds, farmington altitude of 5 to 13 columbus because as it's 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 like the straight to scout a, so close to the ground that they're roughly referred to as high folks. the investor who clouts extend 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 salt plain into 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 atmosphere at 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. he's showing

a trainee the principal based on nature's model. he government laws linking it, but it has like an extra moisture from their low man. i'm afraid he got locked up. they sucked it up to like a small issue the for my view, unusual instructions take advantage of a common phenomenon and on the north side of spain's 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 sunk a valuable both in the same way that like i'm to do a name on my yeah. don't the let me ever let go. when push as far as the entities financing the back door and like a tiny water drop the roll into a bigger drop this in there, but i haven't it, i don't know what that is,

which then fall into the collect the flow into the tank. so let's do this, i'm gonna put a roller the, the heat allow us, you know, the in total, they've collected 90000 liters of water over 2 years. water is gas on grand canal area. the reservoirs of running dry. the art conditions i'm making wildfire is more frequent in 2019 and was hit by devastating fire 10000 heck to as far as phone down 9000 people had to be evacuated. that we'll see the look as a cuz he said literally meant that it's a vicious circle. well below got here, the lack of water means there's less healthy for it goes on to the weighty and everything. this rise on 50 because here, cuz this is her and mainly the, our fuel 50 for the fire, the funny little bucket for what 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 floral forest to grow here again that will work like natural fog catcher was left on cnn latrice. take the water from the clouds and pass it came to the ground when a scene seemed to an end. so that means it could be the future of the island. and i see for now the present is dominated by agriculture. economically, the canaries depend on but non across, but each tree needs 20 liters of water a day. one where i'm on source works. i plantation in the north, a grand canada. he's worried about warranted 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 if it ends up. okay, i don't see what i really would do about the good large scale feels of phone couches 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 clouds several years. they expect this metal grid to a much more efficient than the plastic match they've been using sofa split. 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 trees 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. so crowns would have to continue gathering here on 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,

broad exceptionally heavy rains to ne, down for a car. the ground was so dry that it couldn't 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 had 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, they're building a sand down. the water stored here in the rainy season will help sustain that community during the dry season. to draw it in the area was not so nice visual stuff. we couldn't 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 i 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. we'll store this rain water in the river back and keep it from evaporating. as quickly and they fix the sun to us. is that the, it at this last point that's a collect and a source, 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 the law will not ever for it, but it shouldn't be available for the communities. local communities do most of the work themselves. it's not always easy to find enough volunteers digging is hard work. building the dam costs about 2000000 canyon shillings, or about 15000 zeros. it's made of mostly local materials,

like rocks and sand. once they've 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, tabulate vision of the dumb and swipe plus the team. but you can see which ones they form like of the fund. i'm not far away. there's 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 and he mainly grows collard greens, tomatoes corn, and let us, and his crops are thriving. whatever the family doesn't need is sold at the local market. the water from the down 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, so we used to grow vegetables here. when the water disappeared,

everything withered and died. well, that's because imagine you've got coke. at 1st glance, it's 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 or we and number with the store to into of water. then that's what a see what the through, by bought at that bytes to the some, via and from the some. but what i pumped to starting to dance with the communities i bought to draw what the for you mind consumption. the rain that falls here doesn't 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 crops,

which we are not able to be brando dean, daddy, thank you for i do business. who do brandon, where they stand, do or die and do those i audio, we receive corps underwood climate, but you know, we have our dunden with so we can also keep 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 philip, there investors directly at the local water kiosk during the walk this on dunlab uh sized grace acting on the touch of what we do during our community mobilization is to encourage the communities to be part of the process from the start to bent under . so we emphasize on the importance of them, but the spacing at every stage. defendants may seem simple,

but for local communities, they can make all the difference. their hard work here will pay off now and in the future. that's all for now. thanks for watching tomorrow today and do join us again next week for another additional dw science show you that the

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but only if the crime is addressed and the public trying to take responsibility for his actions. guardians of trees stop march 2nd on d, w. the . this is data we use and these are our top stories, russian opposition leader alexi. now volunteers team have confirmed his death, but they say the authorities are not releasing his body of honest spokeswoman has blamed by president vladimir putin personally for his death activist in russia. say police have detained more than 100 people. nationwide, protests prime minister victor, oregon, says hungry parliament can roch's vice sweden's membership of nic. later this month . zable hungry is the only nato country which has not yet faxed the swedish bed to

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