yes under cultivation are dwindling the average size of a japanese farm is just $1.00 hectares which makes it difficult for farmers to make ends meet that is why there are hardly any young people farming was the average age of a farmer being 66 years old cooperatives are formed in many places in order to be able to far more effectively but the increase in natural disasters is also causing them problems. in the world. to avoid being held hostage by these changes the farmer. was inventive will grow up and this is my aquaponics system he proudly explains and his small greenhouse he is trying out a new form of agriculture aquaponics here fisher bread and large tanks. has 250 sturgeon's and his facility. with. the

fish excrement is pumped out and used as fertilizer for various vegetables the water purifier by the plant is then returned to the fish tanks. from rice farmer to modern aquaponics farmer almost all vegetables thrive here all year round and are independent of climate changes the greenhouses even withstood an earthquake . the neighboring farmers have already suffered this year it rained too much and their plants did not get enough sun. i kid out over can still carry his harvest to the market. and dreams of an even bigger plant. such as this one in the show now back district in berlin. and the grounds of an old industrial complex

greenhouses professional growing in the middle as the city. groups of visitors from all over the world come here to learn about the goings on inside. this is also an aquaponics farm but on a grand scale. the current product capital city. grown but the excrement of fish present these tanks. the fish that is marketed in berlin is of course called capital city perch. the one dog we want to produce where people consume so we don't have long supply chains or along cold storage time zone and we have a much better c o 2 ballots i think our fish the capital city perch is the freshest best you can buy here in berlin. the principle as old as the hills the water that is polluted by the fish is extracted and used as manure for the plants and has been used this way for centuries in china and by the mayans of central america. the

plants grow faster on shelves or on raised beds in these rooms than in a natural environment the young entrepreneurs produce $1500.00 basil pods per week for a supermarket chain so won't take long before the costs for the 1400000 euro construction are recovered. 7.8000000000 people currently live on our planet in a mere 30 years it will be 11000000 more and more people are leaving the rule areas and according to united nations study 2 thirds of the world's population will be living in cities and 2050 so more of these fires will have to people especially in asia. they're the mega-cities already extend over huge areas without any agriculture more plants and more greenery is needed in the cities. urban planners face

a new challenge the inhabitants of mega-cities not only have to be supplied with living space watcher and energy they also need room for growing food. the descent of architects just talking and more from and his staff are planning huge residential and office complexes and almost all the world's megacities and they need to make them attractive to live in. dallas and. we have to deal with overheated cities so it is also significant really warm and hotter on the surrounding areas made for dealing with sitters that are not only damaged so to speak but also sealed so no offices there is little contact between the environment and the office with correspondingly. negative consequences due to the influx of people and of a crown day by the physical it is no longer possible to ignore this problem so the idea of revegetation and of green architecture equal to

a major role in the wheelchair war from the other being ripped off or no. this residential and office complex in singapore as high as the president television tower is an example of that to set off architects work. 20000 people live and work here a small town in a single building complex. in the middle of it is a green heart 350 different plant species help to provide better air and a better climate. ever think of this with you drew on for this is certainly not the solution for normal rural central european areas it is the solution for high density locations of course if you plan to create a green area you can also use it to produce food so you have to have facts of life that you have to shading a factor and the fact that the food is produced here so you have the benefit of production about under an additional advantage is that if the project has grown

here and you also save c o 2 due to shorter transport routes what we're going to stop them. green areas and not just for recreation agricultural producers growing food at high rise buildings or on roofs next to huge office towers it's really i wouldn't dismiss it although it does of course aim bizarre because i think that from a central european perspective it's difficult to imagine the density and intensity is one of the difficulties many of these cities will face in the next 50 years so what comes next is to achieve this with a quality that enables the people to live healthy lives there on a permanent basis for. what sounds like a futuristic dream is already reality and asia. but also in europe more and more people are moving to the cities and the transport supply chains for food are getting longer. in the center of tokyo dickinson

the main shopping street of the metropolis home to the large japanese corporations and long established institutions. a rice field in the middle of it on the roof of a high rise building. a secular brewery grows the raw material for its rice why here. in japan psyche is not just an alcoholic beverage it is an indispensable part of the country's culture just like rice. which is why sackey and rice belong right in the heart of tokyo for this program. it is also an experimental field for new varieties the roof of a high rise building as an agricultural alternative. that body. in the beginning they didn't take it seriously you know rice would grow here it's much too right here at night with a cut on the roof it's much too hot. but our experiments have been good and we're harvesting more and more the rice grows well here i think it's right that in japan

they are looking for different ways to grow rice and vegetables it's a challenge. and after all the rice is part of our tradition ideal let's start there get there not only. each season the group produces 50 parcels of sackey from a small rice field on the roof of. the historic building hope those in the center of berlin. right next to the museums and transfer is a restaurant. deal limited to class cabinets are not just part of the decor i inside grow herb's and salads. and israeli starts have based in berlin has placed these planned cabinets in various restaurants in the city as well as in the stores of a supermarket chain to function similarly to the plant factories in japan and ensure

that the project is fresh on the table. there are 50 sets many greenhouses and berlin alone and about $200.00 already distributed throughout europe. 2 square meters of space in the plant cabinet corresponds to 250 square meters of regular farmland and this food is wasted in the kitchen because you only harvest what is necessary for the dishes that guests have ordered the office needs of our songs 2 or 3 times a week which we don't have to wash up because it doesn't have any dirt it has just water it wants so it's perfect for for the cooking also but i guess this is for example it's true so let's 1st of all it's this this is very hard to get in there in the market so well you can see that it's super tasty and the fact that you just you are harvesting it and putting it straight into the plate it makes

a huge difference but the other thing and i think this is the most the bottom one is that you have access to the flavors and plants that you cannot get anywhere for example this one is small stuff and it's something that you cannot get in the market things to really like must stop the cycle. sharp and spicy. admittedly this kind of special preparation is more for the enjoyment of a metropolitan minority presently these greenhouses are not your plan for mass production in germany. at least the lettuce here doesn't travel far to be put on the table. factory plans grown under artificial sunlight without earth and with little watch or. an important step for the nutrition of the future and the challenge for conventional agriculture. real will work with nature if you look around here marx are saying is that the insects are flying around but that isn't

the case in these facilities thus i believe that this is not what you want in the future it's not nature it's just an artificial product i just can't imagine it but it has nothing to do with my eco's as a farmer army farming is having an area of land here where something is growing that i can take care of one of these artificial farming goes against the philosophy of what i want to represent with my soul as a farmer. but do we have another choice classical agriculture alone will not be able to supply the growing world population without the help from the oratory for much longer with plants that develop in a controlled way without the use of fertilizers and pesticides and with less watch or. soon there will be a world population of 10 or 11000000000 people we can't imagine how big the cities will become and at the moment it's almost considered progress if you can successfully cope with overcrowding at all it is an essential part of the 21st

century technology that we achieve this because if we don't all survival on the planet may not happen what do you want do you want to produce is such a way that you have. and you use you need to use a bigger surface and that means that you have to destroy nature or you want to have your. square meter so my opinion. is that we use our agriculture fields in such a way that we optimize the growth in order to save the environment. our research is still just starting however in the coming decades cities throughout the world will need to host vertical agriculture with safe clean and sustainable pride . if we are to prevent food from becoming scarce.

i'm glad. he's quite as simple as it seems. to understand the world better we need to take a closer look at. the experience knowledge of blockages. to. over

a 1000 years ago good instruction from sweeps across europe. the roman empire lives on if only in architecture. the rulers wrecked magnificent sigrid building. contest of the cathedral hard won the romanesque period. 5 minutes on d w. slate . carefully you don't know who they should be. going to declaim.

discover the. place. subscribe to a documentary to claim. play . what he thinks of ok no erupt. how does too much food affect the balance of all got flora. and which animals have the most successful relationships to those questions coming out.