oh, sometimes the seed is all you need to allow the big ideas to grow. we're bringing environmental conservation to life with learning pass by global ideas. we will show you how climate change and environmental conservation is taking shape around the world and how we can all make a difference. knowledge gross through sharing. download it now. feel free. ah, ah ah ah, cities are home to more than half of the people living on our planet to do these urban centers face

a host of pressures from the demands on infrastructure by growing populations to the risks of climate change on eco, immediately we discover solutions to enhance the quality of life in our changing cities. hello and welcome. i'm funneled that i caught the oasis i'm standing in, belies the reality around me. my is one of the many cities that seen unprecedented growth, accompanied by a building boom. cement has long shaped a built in bottom it, but it has an enormous carbon footprint in sort of green alternative still engineers and thumbing like a rescuing, almost forgotten traditional know how? ah, arriving in gun up at the berlin, it appears to be a village like any other in india's coming not to state. the young have all left

only the elderly, demean. custodians of local knowledge, including the reason which religious once been to their homes for you or have you ever made books? i used to watch my father. make them so your father, handcrafted them, used a killing to make them yes. oh, construction engineers out of in manhattan. and parrot, but as of the money m one to tap into this ancient knowledge. they have visited more than 40 villages around them and not do in recent years. investigating the old techniques and building materials either community bollinger rather than in the used to be only one or 2 masons for regional local people who worked together on the la mill. and so anyone over if you knew the entire process, how a mud mixture should be and how to choose to model what to add to the lime and it's consistency and about grouping and floating with them. but we interviewed elderly people in each region and benefited from their knowledge on why he's on only landry,

opening, $7070.00 at all. storm meas, in keen trojan is one of the last of his kind. he's building a house 650 square meters anadia in villa coin in the old style yard tag, right to the line makes to lend the plaster. i sat in gene in the business for 50 years. he's delighted to share the secrets of traditional construction with a new generation of been does on got marilla, but if you go all the houses in my village used to be a big flag on the in the city. the current vendor structures like this. but we had met was a lime plaster and tyrell lloyd. this is the dad went off, seemingly wondering what we'll go of in minora and had a balance of money and have been building with natural materials for the last 3 years. thinks like my ballot, not or january i shall go use in construction for centuries to bind lined glasgow

or the reading of it. i'm going to go home shoes, local media, local soil. luckily sources for a lot only then is it a structure? does not impact whitening the little body from the modern construction methods that amongst the most racial energy than the embryo. global cement production tops for 1000000 tons and manufacturing requires extremely high temperatures. the production of a single image, 700 kilograms of carbon dioxide. in addition, toxic chemicals in construction materials for help has put into a t t wants to change her family from all that she contacted the maneuver and put a little bit of money to build her and always staying holiday home in the countryside. again the natural foaming, i'll be wanted

a lazy the organic farming because we wanted to provide good food, whatever the case. number 149. and since we wanted a house to stay in, when we came out here, be taught by no, not necessarily the vocal to the 70 year old twins then by and certainly gun love to play at their country home in parent, right? the walls are ported with 5 layers of life laughter that allowed the house to breathe. this natural material keeps the house cool in summer and warm during winter. the vote for the, for source from reclaimed wood market leader and her husband hammer dodge among a growing number of middle income house owners who have opted for green building materials out of in norwood and seen deaf and just use traditional techniques and material to build new houses they come in your school for restoration work to on

properties like this one near by. the little symbol i me elevated. this is a 90 year old building that we have done with. the original vote was a month. it was 1.5 feet which they had 7 layer lane blasting. benita, i don't mean to maneuver and but as well as money em have already completed numerous sustainable projects, mainly in rural areas including schools. depending on model and workmanship, building cost surprised at around $3000.00 b. 's or $35.00 euros was square meter. by contrast, a convention house cost less than half that. well, it doesn't regret the investment. she believes it's already paying dividends in a cleaner, more sustainable environment for her children. now, bangkok and maybe half a world to be, but both face the threat of drowning their dream is systems can't cope with

flooding, caused by climate change. a water management model devised or done city into relatable sponges, could help both stay and try thailand's capital city, bangkok had been hit especially hard by climate change. the city is only one meter above sea level, which keeps rising at a rate of 5 millimeters per year. scientists predict the city could be under water by the year 2050. alex face is a graffiti artist and parent who's worried about the future of his home. some stretches of land have already started thinking, for example, around the sandwich in temple only 20 kilometer south of bangkok. the ocean moved to the land last 30 years. so the local people need to move to house that image, mutual community and there was a village in a school here once,

but when the area was flooded, residence left and the school was moved inland. latino, the template now like an island that during flooding is surrounded by the sea. build a phenomenon and cotton integrated with our non here you see to make concrete oh, here. the dam to try protect the temple but i feel fine. not stable. and is tracy is due to be the road here. germany recently experienced a climate change induced disaster. the summer of 2021 saw the worst flooding here in a century. nearly 200 people were killed and many remained. unaccounted for. damage costs were in the billions. the incredibly dry. somers created soil that was so parched, it couldn't absorb enough water. but drainage systems are also hitting their limits like here in berlin. heavy rainfall overwhelmed the infrastructure, leaving it unable to handle the massive volumes of water. this causes basements,

low lying building entrances, and subway tunnels, to flood engineer canons, zika from berlin, city, water management design, so called decentralized rainwater management. like most cities, berlin has a sewer system, but it can't always cope. event is expanding, agnes because heavy rainfall has increased. the waste water systems can no longer drain that volume of water from i. factory map light on this continent pensive, and that's when you get out of fly on a lease that's own huh. oh, and large volumes of surface rough water, the collection low lying areas in banking dash baptism in to help tackle the problem. berlin aims to become a sponged city. the idea is to capture rainwater, like a sponge, seaters and, and board. and then it can be drawn into the soil buffer house that's good for the water supply and has all the benefits, like ab and greenery and climate that came out. and yes, a house to prevent flooding. little's tamma. since 2017,

every new housing development in berlin has been built according to the sponge concept. a pioneering example is this residential area, and se berlin? yes, the fatigue woods. i can, ma'am. he, you can see the vast green re on the rooftops. that's one way that rainwater is captured, and from there it evaporates. wicca hired mavita, had done that as much as 90 percent of rainwater can be captured. in this way. run off water flows through pipes into special drainage basins. there are also low lying flower beds paid areas that are not sealed, and gaps in the curves that allow water to pass. but only about 4 percent of berlin's rooftops have plants like this. the sponge city is still in its early phases. back in bangkok, the city also wants to tackle flooding with green rooftops, like in berlin. it helps to use them for temporary water storage. so the rainwater can be put to good use. that's just one of many ways to give nature

a chance in concrete jungles. more importantly, it's an attempt to prevent catastrophic flooding in the future. i think they can do that, but we need t when every one, les, hey, wake up and see what's gonna happen. and we need to fix it. to get cities have a near insatiable appetite for energy. the sun offers huge potential to meet their demands, but full of our storage is still riddled with problems. a team of scientists in europe says it's developed technology that's cheap, effective, and could ultimately help the world reach its climate goals. we checked out their pilot project in spin safety 1st. these engineers are getting ready to scale. a steep reactor here in the spanish city of seville. it's at the heart of

a pilot project that is now in its final phase one that holds the promise of a new method to store solar energy. we can talk about it without that. we need to be careful. that's why we switch off the solar field before we go up how to get him a lot of each of their equals 14 sons. we get fried up her. today, check out there. he is giving his colleague gunter schumer, her tour. it's the german engineers 1st visit to the plant. he's one of the numerous researchers who developed the reactors components in institutes across europe. but the pandemic prevented them from traveling to the side to install them . despite the obstacles they believed this plant could be a milestone in the quest to store solar power. at the base, calcium carbonate is fed into the reactor, or cal fina. the chemical compound consists primarily of limestone tests you have shown it can store solar energy. the method is now ready for more extensive trials

though some processes still need to be optimized good to schumer reports a minor era back to his colleague and germany. mohammed usa is an expert for thermo chemical reactors, but was unable to accompany him on his trip. where the ball aloft, if it would be identified the glorified glitter. are we not each gallagher, mike investigate? the 2 engineers have designed the power blocks and the plans conversion technology . the project is a matter close to muhammad you. shes hard, he experienced the severe effects of climate change 1st hand in his home country, bangladesh. one of the principal visits i live there, she is because you can't go out any more. today you have nothing but an interminably long summer. summer does not ended ball. i wish you'd only perhaps valenze for a few weeks in july, but the winter has disappeared. a future faced by countries worldwide. it's what's

driving warm at usa and is team to find sustainable storage methods for renewable energy funded by the you. the project has devised a method that relies on a chemical reaction process. panels sent solar energy to the mirrors on top of the reactor. together they produce temperatures of up to $950.00 degrees celsius. that heat causes the calcium carbonate to break up into calcium oxide and c o 2. these components can be stored for a long time and reused for further reaction processes to obtain energy when ever needed, ah, seasick if we want to develop energy storage systems on a big global scale, we need abundance stable non toxic and affordable materials. and calcium carbonate means all these requirements are little boy you. currently,

it has few competitors. solar energy accounts for one 3rd of the electricity generated from renewables in the u. it's the fastest growing source, but when the sunlight vanishes, there are hardly options to make it available at a later time as needed. the most widespread solution is battery storage. in the west of spain, energy giant, you better allah use us, lithium. i am batteries. is the blender bundle for this solar park and in storage system will provide energy to $20000.00 homes every year. we run out and will avoid the emission of $12000.00 tons of c o 2 at the end, but it is the site manager over. so the parks, construction install system stores excess power that can be fed back into the grid when it is needed. the lithium batteries are locked away in these racks. we were not allowed to film them on the inside. within 3 hours, the batteries are fully charged. the energy is then used over the course of the day at times when there is higher demand or no sun going,

grandma said unable guarded it, but these are times of expansion and the discovery of new storage technologies. i'm even though a, but some technologies are developing in a fancy hayes royal him and then also we're an awful lot of it. so we'll have more storage systems in the near future and on the market on an industrial level and, and medically yes. and anyway, industrial, the batteries on the store power for limited time, and lithium is also in high demand for other green technologies. he karnataka today, he is convinced that lithium will soon be rendered obsolete by his team's method that uses limestone to store solar power is rapidly openly beautiful. magnificat lithium batteries are magnificent, to have aright potential. very high performance out. i being lack of you have in lithia, but lithium is an extremely limited resource, can only be found in very few locations in the world. i mean thing that for he on it will look at her. the engineers hope that their storage method will be trialed

at a real plant in the next 3 years. if successful, their innovation could be brought to market by on one was during renewable energy is the most important step in the fight against climate change. whom do i want to do with them and the clock is ticking, capturing the power of the sun is set to be a key step on the path to success. singapore is warming up faster than the rest of the world. and climate change isn't the only reason. it's densely built. and wadman traps heat and air conditioning only compounds the problem. the need to keep cool has prompted the city to embrace innovative green solutions. ah, it's hot and humid in singapore all year round in temperatures, reach 32 degrees and above deeper and to release to stack inside the

small very so refreshing 20 degrees demolished school by to raul's largest on the ground air conditioner located at 25 meters below ground is the district cooling, netbook, the 2nd of its kind and sink down here, water is chilled and piped out to 27 buildings to keep them cool. the show size of the plant makes it so efficient. with the ship, lincoln the chief up to 40 percent in terms of energy savings. this is equivalent to powering 23003 room apartments for you. so this energy saved and also translate into carbon savings, which is a reduction or removing $10000.00 cos oxy. up all routes every year. but this is how conventional air conditioning looks like. and singapore is

a back alley, in a historic part of the city, with hundreds of air conditioners. each machine is powered by fossil fuel and releases waste heat into d l e sent out to the city. it's a vicious cycle, the global warming, and he traits living without acquisition is tough. but more air conditioners, more waste heat meter, to the environment. samples founding prime minister, the coin you was sick that the air conditioner to greatest invention of the 20th century. the cornea wanted to mixing a ball of very hospitable and very comfortable. for our uno american investors, we jokingly call it little america. and every building is fully i condition. what were sacrificed, taking to ask what a development of architecture suitable for the local climate. so when the weather

is good, we shall be able to open up the building. when the weather is hot and humid, we close it switch on the corner for you, so optional use opec condition rather been an absolute necessity. the challenge lou tropical architects is how do you desire a building like that? now some tropical skyscrapers have been built. this hotel is one example the i you suit my idea, an architect from the cooling of our research project explains this building uses of practical greenery that cover it's almost the entire face out of the building. and by having the figuration around the building, it can reduce the surface temperature. in fact, in our study, we found out that by having at least friendly test practical greenery in front of your building, if carried yourself as temperature by 5 degrees celsius sample. as new as public

housing project, kona is where many solutions come together with district cooling party powered by to sun electric vehicles, charging stations, bicycle names, urban farms, and we'll talk gardens. this is a look into what singapore could be like in the future. a more sustainable city, adapt it to its climate change challenges, noisy and polluting traffic besets are cities like of clique. what would they look like if bicycles were given the right to flick, we met a german designer who dare to dream. this animation shows what the halston plants and hamburg would look like if all the cars and traffic signs were gone, making room for trees and grass. it could be a square of paradise for cyclists and pedestrians. but it actually looks like

this, much to the displeasure of hamburg graphic designer yon kaminsky. he would like to see fundamental changes, which is why he began making animations of how he believed streets should be been on for next week. so again, the project got started with the beginning of the coping. pandemic smirked to miss . i looked around and thought of, i don't want to just sit and wait for the changes we need, like i want to contribute. read august i and as a visual designer, i can change urban spaces up or before and on. young kaminsky thinks gray streets and dreary squares should be transformed around the world. or at least in animations to start like here in new york city. and in belgium's capital, russell's and germany's capital berlin, the graphic designer, launch social media accounts under the name utopia. for bicyclist. as paul may up

tops was fought. we need more space for bikes and more by and take up little space compared to other modes of transportation, flotsam for light, and can be used for many things on us as follows on his ions at spot, john kaminsky, his vision is already reality. in germany's neighbor, the netherlands, for example, in the countries 4th largest city group traced where 125000 people cycle daily, whatever the whether that's more than a 3rd of the city's population. chris brantley works for a network that advocates greater use of bicycles. he spends much of his time on the freedom bush, the most heavily traveled bicycle path in the netherlands. it used to be a multi lane road with heavy traffic, like the one is found in all cities. unfortunately, a lot of cities cycling

a still just for the fit in the brave and the really risk taller and people that are willing to rub shoulders with motor vehicles. but that's not the vast majority of people who live in that city they want. ah, to be able to tune out and just enjoy their can you and, and when you provide safe 2nd separated space for cycling, you're going to attract more of those. those casual users. in 2019 the world's biggest parking garage for bicycles opened and you thrashed displays. tell cyclists of any spaces are free up to 12500 bike riders can park here right next to the main station. in fact, the country has become known for its bank friendly and aesthetically pleasing solutions such as the toughness skippers, bridge, which passes over the roof of a school and connects to neighborhoods is just so much more convenient to travel around the city on a bike. and so much quicker and more fun. hamburg is still far from being

a cyclists paradise. but yon kaminsky hopes to at least bring attention to urban mobility questions. daughter's justice falls pressure by pushing forward. i'm creating opportunities for debate was. so one way or the other, i'm provoking some kind of rethinking of the issue, and i also am those young kaminsky hopes his utopias. mont, remain purely digital, and that not only hamburg, but metropolis is like paris will become bicycle paradise's, much like the ones he designs and animates cars completely gone and only bicycles on our streets. i'm not so sure about that turning to reality yet, but it is true that we will need new and innovative ways of pink to, to deal with problems of the future. especially with 2 out of every 3 people expected to live in cities by 2050, according to the un alina with that and see you again next week from all of us in

india and germany. good bye. and thanks for watching. ah ah ah, with

who i am known for sky high. these doors with an important document was drafted in this very sweet edition. was found dead in room $317.00 the ball revise in geneva,

the stage of human tragedy. i'm political entry in our series legendary hotels on d. w with hello guys. this is the 77 percent the platform for africa. you to repeat the issues and share ideas. ah, you know, or this, we are not a because population is growing. and young people clearly have the solution. the future belongs to 77 percent. now every weekend on d. w. welcome to the dark side

where intelligence agencies are pulling the strings. there was a before 911 and after 911, he says after 911, the clubs came off where organized, cry, rules, and genuine use a global network of companies, banks, and operators. we will provide those services to anyone operation in the criminal economy. where conglomerates make their own laws? they invade our private lives through surveillance. hidden opaque, secretive. what's true, what's big? it doesn't matter. the only criteria is what we'll hook people up. we shed light on the opaque worlds. who's behind, who benefits?

and why are they a threat to us all opaque worlds starts january 5th on d, w. ah, ah, ah, this is dw news coming to live from berlin. germany becomes the latest european country to tighten corona virus restrictions transfer off sholtes and else's new measures that will come into effect after christmas. they include a limit on social gatherings. there are to be no large scale new years eve.