to morrow today, ah, in 60 minutes on dw, ah, what people have to say matters to us. ah, that's why we listen to their stories. reporter every weekend on d. w. ah . 5 people and nature are experiencing extreme temperatures and drought in our cities each year threatens to bring brick or tate jump to. we've measured $70.00 to $80.00 degrees celsius on glass and steel behind here it might be 30 or 35 feet with dense development concrete. and ash melt become dangerous reservoir of hays.

it's nearly impossible to cool them down. in one of the city of facades, which reflect, reflect and tend to make the problem worse for libya, garza high temperatures, threatened now health. we need to cool down. as i fear for safety, if you have a gravel roof make a grievance for as long as global warming has been a reality. so has the strain of heat on our cities. but now garden is an architect . the coming up with some cool new solutions. with margin builds is 27 meters above ground, working on youtube's greenest, high rise barracks is a passionate god, not with his green facade. he's providing and naturally conditioner in the heart of the city. if once fung, i'm your leaves are starting to retract and slowly dry out anon,

but thanks to our watering system, a vessel there are also fresh usa clever become mm this shopping center is called cool bogan to named after diesel dose coon, exactly shopping area. the 30000 horn beam plants said to call to building to hampton noise and absorb carbon dioxide in there. first, some of the plants are already feeling the heat. they're part of an effort to counteract increasing heat waves in german cities. a consequence of climate change . the whole names of only be for 6 months, so they're still new. they're supplied by a special irrigation system. all nearly 35 degrees. has it running 5 leaders a day for the tubs, and 15 leaders per square meter to be sufficient to moslin outside. what's that red

outage most diagnosed? i'm sure it's a malfunction in the acid supply will have to go to the basement and vent it to us in the system, uses a lot of water, fox 1000 cubic meters a year. but it has enormous benefits to city residence. worth of of that water gets turned into coronel women. you noticed that when you walk around out there at one in 1st, near the facade, there are significantly cooler temperatures as well as humidity isn't so taken together. it's 5000 cubic meters of water that the people of dusseldorf get back through the system accomplished is unlike of. and unlike air conditioning, the plants don't blow out hot and into the city. heat increases have been traumatic from 961 to 1990. the average for july was 16.9 degrees celsius. in the 30 years after that, it was 18.3. an increase of 1.4 degrees,

vamped in part one of glass in high summer. we've measured about 70 to 80 degrees celsius on glass and steel shuttle behind. here it might be 30 or 35 degrees if that i've been involved. if you look at the least they're structured in such a way that they can't get hotter than 35 or 36 degrees from the ice because the cells would burse them and the moisture would cool things down again. if you know, but that's also why they have a cooling, a fax of us. it's just how nature works. so i feel fortunate that one night you too can experience suffering. and martin belts and his team still have what to do with the home. the implants, a few kilometers away at to source riverport, the landscape gardener is working on another project. he meets with architect christoph in hovan. he designed to curb over 2 people with him on 4th, let him know about this. we don't jump right into it in the fall, but we take

a look together and decide whether we could do it before the new leaves come in the spring. just i'd like to look at it with you on site with it i might inflicted some helps to pay. i have completed many projects together in an hovan and his architectural studio have focused on sustainable building since the 19 ninety's winning many awards. now he wants to shake up urban planning on house boundaries when you build a house like this one, for example, when you're using up a piece of land, a piece of the earth, if you will. and you can think about the green mass that would be on the side as untouched forest. if you were to just leave it to its own devices for 50 years, the nation forces management. so if we evaluate the ecological and social value of the nature that would otherwise be there, then we have to do something that compensates for us to discuss what's as long as it's like the roof with the home being plants. not it's not just city centers. chimney's industrial zones need to become created to research is in once to land

are about to take to the sky. and then what's the humidity you push to 90 percent, 30 or 90 percent. and evie schneider is doing a fine a with a check. it's going to be hot and humid day perfect for her project. the measurement engineer is going to fly over some specific industrial areas from the air. she'll use a thermal imaging camera. she get precise. tasha from industrial facilities should be able to see the temperature values of individual companies, streets and squares these days. many industrial zones don't ever properly cool down in summer. the project is run by a non profit. the bomb, so had shown, with funding from germany's ministry for education and research. the goal is to

reduce heat from industrial areas, making the more sustainable. unless it does the alcohol coo, you can see that there is no cooling left. who is frightening was if you can tell what it built up areas like and whether there are differences, whether fresh air can pass through, whether trees or a river have an effect. and how permeable surfaces are you can see a difference between tara and paved, or if it's paved with granite, because that heats up quite differently. the differences are there to see, to students. the thermal images, a precise with cooling areas, blue and hotter parts red. down on the ground, uncle valentin is in the book halt, industrial zone. mr. mal images help us. you convince local authorities and companies to make changes because industrial areas are quite literally hot spots either. there anyone who knows industrial areas knows that they have many parking

lots and a lot of wide roads for the trucks and lots of stationary vehicles. yeah. there's a lot of space that simply covered with asphalt, which also means there's a lot of potential to change things with rising temperatures, the heat in these areas increasingly affects the people who work here to in germany, around 56 hectares of nature and countryside lost every day that's the size of 76 football fields. the government had aim to reduce this figure to 30 heck to his by 2020, but that's now been postponed to 2030 this wild plant bed was only planted in the spring on co valentine is here to meet business owner cottage malik, and gonna t o crunched in law very good to see if the plants have already made a difference. provo at off, my hus. let's see what the airplane brought us have the read or it is the hot or it

is, is the highest. and we're here. here's the bed on it. oh yes, nice and blue. oh, oh money i understand. i'll come. you might think it's the effect of summer passing . but the cooling effect is still really big life compared to the street, which is bright red canada water. it was worth it happy. all right? yes. are there any other places where you think you could change a couple of things? yeah, of yes, one problem is that our office buildings are quite warm, letty farmers, and even more so on the production floor. sharlack is a medium sized family business that produces machinery. when temperatures outside your extreme welding can make the workplace seem like a furnace. current malik wants to change that that's what it is that high when it's really hot. employees have the option of starting an

hour earlier and leaving earlier in the afternoon. better working conditions, one thing. but if greener, industrial zones can reduce heat in the outer suburbs, it will also have an impact on the climate in the city centers. that's why the company aims to gradually replace sealed surfaces with greenery and covalent in also convince the young entrepreneur to invest in a green roof. the 140 square meter flat roof is well suited to provide natural cooling right next to the factory. as i can see, it's great that something like this is possible and these sorts of buildings or holt is one of 10 pilot municipalities aiming to transform new industrial states as response to climate change. the i'm you can would, would be, well, what's, it's going to be a modular system, no longer cluck,

these boxes click together with just some matting underneath and wendy's a kiss and the boxes will be lined up one after the other. your photo, it's easy to see advantage you normally rainwater would flow right into this drain, but this system can retain 20 leaders of rainwater per square meter. roughly that's all got it. that will provide additional cooling. because the measurements show that the gravel, he was 29 degrees even with cloud cover. i think even these few plants a 3 degrees cooler. e v i v, i'm not sure. of course it would be ideal if there were greenery everywhere. i will have to speak to the neighbors again. donna tomato is working on a director vehicle. then it would have an effect on the street. i'm just the 1st step, like every little step helps you to manage that every little surface kind of the greening system costs around $70.00 euros per square meter. but the counsel

providing 10 is the subsidy. it's a start in other places such efforts have long been standard practice the singapore government, supporting targeted efforts to bring nature back to the city. the city state is a pioneer. it's been greening high rise building since the 1960 s mm. their gardens parks and greenery on all levels architect tool mushroom. the research is the effects such buildings have on people and the urban climate, the unknown decor boy, the here at the interlaced complex, the arrangement of buildings contributes to optimal ventilation. a complex itself is already on a hill and we're also not far from the sea ice cream off. the usher that there's always a very nice breeze passing through which is used at the level of the complex as

a whole, to cool the outdoor spaces, but also in the individual apartments. where you have really nice cross ventilation keeping the building cool to support through high ah, singapore required buildings to have at least as much green space as was cleared to make way for construction. otherwise, there will be no building permit shop for and his colleague also research the effects these green buildings hat society community garden for a quite interesting. it's an extremely pleasant space for them to actually come together. they also do the thing about community cooking, where whatever produce, they draw up there. so it's a nice way off engaging them. his accounts, all of these green spaces are open to the public. so the residents from the surrounding buildings can use them just as much as the people who live here. yes, of course, that increases the value of the neighborhood is where these kinds of buildings are

located. origin toner, struck for works at the future cities laboratory at the singapore university of technology and design. during the pandemic post, employees awaken from home they evaluate data collected from the building so, so often with surprising results themselves from vice for longer want us all, for example, we look at what bird species are found to us victors. and we find that in terms of biodiversity on buildings like these actually perform much better the size of where the course of this, even though they're densely inhabitants. and you also find a lot of bird species there that you wouldn't expect installed mr. bar. as well as gratian bio diversity to buildings helped to cool this surroundings. residents consume less energy and are able to enjoy new social spaces.

dessert is a good boy, doesn't find him on. i think these buildings are great examples of how dense and have a taishan can go hand in hand with quality of the space been up to one of irish. thus, germany can also look at this combination as proof that density isn't automatically bad for the environment list. for the most part, ideas from singapore can be applied to jim in cities, especially the realization that mo greenery is a good response to climate change. at central construction sites, motion belts is working towards the greenest city. this high rise building is getting a roof of plants using compressed air. the plant soil is transported to the 9th floor. a logistical

challenge built is one of the $160.00 employees at a firm based in the city of hooper town, which specializes in these sorts of projects. just given out of everything will grow soon. right now it looks completely dry, like it's just dirt on top of it, but the material is going to store water and then slowly release that vessel gifted lungs, them up from dusseldorf to the cathedral city of cologne. the top floor of this plant hotel will eventually be a small, far saw the great 6 floors up with no elevator at my door alley against me today, i have to check the plant draws scuba, the gray plant and boxes on the buildings. ruth and sides will soon be house me to high plants. likewise, if all by anybody of the duma kinds of wood, it looks very good. oh, the drains are clean and tidy as planned when there's nothing in the way of it. i'm

a, let's go around the corner again. yeah. belts is a meticulous planner. zima zip the $77.00 large trees with us about $380.00 smaller trees under since and a few 1000 shrubs and grasses and bushes and smaller plants of exit to secure the larger order of trees, shrubs and bushes. belts heads to the netherlands. he's worked closely with the tree farm here for years. they share the same notion of quality. ah, this is no simple shopping trip, as well as martin belts and his colleague, landscape architects and the investor are also involved in them with this. this is the north eastern side, or does the theory the tree right on the corner there on the okay. from in that

position. it's an important tree. and beastie bodenal's the shawl. sophomore. let's take a look at it. it's this way. he's a victim. the tree farm covers a total of $500.00 heck tis. it's full generation family business. ah. was looking at the marcus. cool brigade is the resident expert fellow. he knows everything about his clients on the yeah, you can already see the fruit forming the folks on that stuff. it's a 35 year old metal, a tray, especially tolerant to hate. martin belts carefully selects the right tree from the long road. the old, the tree, the more expensive it is. they can cost several $1000.00 euros. so this some hot bargaining good near to your there'd be an additional price of $8.00 or $900.00. was me additional? yes or no way that honestly, that wouldn't be good value, but he chooses another tree that they always come to an agreement. this is number

56 for now. yes. current cologne is heat waves. central. something has to change your cities won't be livable anymore. mm. the bill for the hotels trees is over 800000 euros. good junky. oh, good again, andy. oh, nice and lucy, we'll be with the children of the st. marine kindergarten to stream. could the 100 by what and what are we going to catch that po? tadpoles ok now bore medi frogs with hon. about close me, the river m shoe in the rue region. a few years ago, it was a stinking concrete drainage canal. it's now been re wild it a so i'll get a bucket full of water. oh look at what's hanging there.

i didn't have any horrid into the boat. my look, i got something here. i caught a baby nail. my my get a magnifying glass. i is that a ripple bug i again, i often come here to cool down their shade and the water keeps you cool too. you can feel the difference on as mentioned on until she does the see. i'm cool. man, you can see the kids eyes light up as they discover everything. you have a completely different quality of life when there's water around. and the kids develop in a different way more than 300 kilometers of waterways in the region of being re while did you get this the i and there are so many animals here and i'm

impressed that everything grow so fast. yeah, i'm next. the one about is part of the regional project aims to make waterways contribute to sustainable cooling. the kindergarten play area was specially designed by class yukon and only pet. so from the empty water authority, they saw that there was no reason for rain water to go into the sewage. instead, it floods the area and then slowly drains. so it provides both natural cooling and a cool place for the kids. i have the islamists enough, my hands are still wet from the hose of you and i can feel them getting cooler when i move them a fast. so the 6 of the water evaporates and cools them, it's your, it's the same principle with our seaboard system. but with that water evaporates

and cools what's around it, as long as you're, that's awesome, that's what we're aiming for, to harness the water and keep it here. so it cools things down through evaporation . it won't like to see until financial school by the portrait star. she wants to harness 25 percent of local surface water in this way by 2040 in an effort to keep residents cool. ah, the same principle is being used in town to next door to the kindergarten. water is channel directly from the church roof into a sloping meadow. rainwater is a natural air conditioner, even on a busy streets of adjusting toy chandel, germany's water management and the population in general are going to face challenges from increasing climate change drought and significantly lower rainfall, especially in summer via also in we're in danger of seeing drinking water being ration from come as, as or not after long dry spells which of ice there may not be enough water to meet

the demands of industry agriculture. and the people think fossil fuel knows many places in the rural region, completely rethinking how they treat and use water for over a century. the em, she was heavily polluted, but that's changing. the river flows from dorman through the rural region for 80 kilometers before joining the ry need didn't slacken in the future. waste water will be routed through a special close canal, while everything else will find a different way. that happens except we moved just under 700000 cubic meters of earth during construction and involved that of song against us. we really pet sullen steph shots off from the am sure water authority. we're also working flat out to restore the rivers flood. plain ne ohausen, a traditional white of the plans, a somewhat revolutionary josh. it's a for you. i'm unlike in the past,

like is all today's ecologists give an approximate meandering path and then hope that the river and the water will find their own way. i'm going vixon. nature will do the work on it and it will develop on its own animal. fortunately dish deputies ought to spend the last 6 years rehabilitating the river for the vice warden glen. this is where the little rings. clover came to visit us on the building side of the syllabus. and i had mastered and bred successfully concluded a foreclosure and had to boast when it had gone again, we could keep working along. so we do things hand in hand with nature on every step of the way. we should 1st, within a few years, flooding will take place and perhaps the cooling flood plain reached as far as ohausen. ah, i can do some doth to 30000 wound being bushes that getting

a last prune that survived the haste of their 1st summer. here for the leaves are starting to turn a bit. the shoots are battling great. um he did with his implants to help coolness it. he seems to be working with architect crystal in and home is placed on vermont design. in item of was that was all he left out on the the city of diesel door has many facets, even then, especially when it comes to the dramas of post war west germany. they've gotten them gunston bahama this deutsch unlocked creek reconstruction. the new buildings going up in the fifty's and sixty's. oh bout lloyd bowed for sale. they say i want it's clear the city could use a lot more greenery on just like every german city or, or every city full stop yourself. there's no city that couldn't do with a few 1000000 more trees. people just have to push for it. well then it will happen that this bus. yeah. the clock is ticking. made catastrophic climate change out in

a cities can only remain livable. that is a massive shift to put new green ways of building ah, ah, with

a joy ride through fascinating worlds into uncharted deb with our guides and know their way around a strictly scientific trip to some pretty wacky places. curiosity is required to borrow today.

in 30 minutes on d. w. a bad road in austria changed quite a bit during the time it what's it like winter sports in a former townhouse? thought hm. in 60 minutes. oh d w. oh. sure. ah.

oh, nico he's in germany to learn german. hello, benito. why not learn with him online? on your mobile and free d w e learning course, eco's fake. how long does a long or an eternity time it can be measured precisely. and yet each person experiences it differently as if there are different forms of type type a phenomenon, a dimension and illusion. about time starts april 14 on d,

w ah ah, this is d, w sly from berlin. victory for a manual ma clone in the 1st round of frances presidential election. the centrist leader fights off a strong challenge from afar rights marine la penn. but it's not over yet. both of them will go through the 2nd round in 2 weeks time. also coming up ukraine and russia agree on humanitarian corridors to evacuate civilians. the exodus is still growing, but thousands of people are trapped.