building into history and the presence nice because i would never have thought they could be live. so i'm listening. i jewish in europe, the 2 part documentary starts july 5th on d w. ah, ah ah ah, if there is one color that's the embodiment of today's zeitgeist, it is green. green stands for lush, chemical, free grasslands, for emissions, free mobility, and for a future in a healthy climate. it is no wonder sustainability has become a top issue for companies, but are these projects profitable and all the actually as green as the peer the

green economy can at work. that's our topic this week and made when it comes to the things that are essential to us pretty much nothing goes without water and looking at the planet. there's plenty of it just not the kind we can use right away. most of it is salt water and less than one percent is drinkable, w, chris and carla. on the tradition of dissemination and whether a berlin startup could have solve a global water crisis. in 2015, a series of drought starting to dry up this damp, the source of almost half of the water available to cape town, south africa in this satellite time lattice, you can literally see the stored water decreased month by month in 2018. the city was approaching day 0000 is fast approaching shorthand for the day. the taps run dry and people would have to q

to get water ration cape down was the 1st major city to risk running out of water. but it's not going to be the last jakarta, london, beijing, tokyo could all face their own de 0 in the coming decade. most part of the world or at least 4 months a year, are experiencing some way to stress those or discuss the gap between the mind and supply of water is netting. but how can that be? our blue planet is washed with water. more than 1000000000 trillion leaders to be precise. the problem is that 97 percent of the earth water is faulty and most of the fresh water is frozen in ice cost. less than one percent of the earth's water is drinkable. that makes one solution, especially promising celebration you sell a nation,

these hello nation. the fellow nation seems like a pretty straightforward solution. you take that undrinkable, salt water, remove the salt, and end up with an unlimited supply of fresh water. so why are we not building more desalination plan? b, l, a nation is a natural process, has been known for millennia. the ancient greek philosopher, aristotle noted the sun turns ocean water into vapor, which then condenses again and falls back as rain. compatriots took note sailors boiled sea water on long journeys. romans used clay filters to trap salt. these are still the 2 basic principles used today. thermal dissemination uses heat falls, boiling point is a lot higher than water. so if you boil salt water,

only fresh water will evaporate, leaving all the salt behind membrane desalination use as pressure water. sheer colored in read for clarity is pressed through a membrane that is only partially permeable, fresh water can pass through here, covered in blue. but the salt is trapped on the other side. the technology didn't improve much until the 19th century when industrialization and population growth encouraged more research. population growth is the main driver for our water sketch months. ok, there is an environmental scientist with more than 30 years experience in water management, shifted instance, middle east and north africa. that region has a population of about 5 percent of the word population,

but just as one percent of the global water resource. and soon, another factor could make the foundation even more crucial global warming. the as the climate warms, more water will evaporate. and as aristotle noticed more vapor equals more clouds equals more rain. but that rain won't call evenly map shows how precipitation will change as the climate heat up. regions in purple will get more rain, those and orange less. now compared with this other map leads red dots indicate areas that are already experiencing water scarcity today. dry areas like calla fornia and the middle east will have even less rainfall. other countries, like india, will have more rain in the monsoon season, but less than the dry season when people need it most. this will make desalination

even more popular. this route is starting to explode, i'd say, since the late eighty's and ninety's, but especially in the last 20 years you've seen a big celebration. edward jones, the ph. d. candidates put together a state of the art outlook on the status of desalination. nowadays we have around $16000.00 deceleration plans which are producing more or less a 100000000 meters keeps the water per day. but take a closer look at this map. if you look at how much the cell needed water we produce on the school, currently 71 percent is produced in high income country. that's because desalination is very costly. the boiling billions of leaders of water takes a lot of energy release. the availability of oil and especially also makes

the thermal processes cheaper for other types that can be, i think, 25 or 30 times more expensive. but that energy doesn't have to come from fossil fuels. the thought up in berlin has a sustainable alternative. my name is kim, i'm the co founder and ceo of the company boyer light. so i moved from west germany to berlin. just one last thing. solving your water. if you like, yes, please give me a call back to see from the home phone to the system. and after that is gone through the booster bomb 14 by the water is fresh to the membrane. it's just an image of water in the green energy. that's the key to the

company's success. this is one of their plants can kenya the solar panel, keep the cost of water low in villages like this, where electricity is not available. ah, ah, the water for free was electricity from the solar wind for free. so we can now produce $0.10. this slide is actually competitive to clean water from the river from the bowl. but there's another problem. what do you do with this water that's left behind? so we thought of this, so look out of the water to produce fresh water. but now this is still contained within our substance, but it's just a smaller volume. so it's most ot ah water. it's called brine.

and the global that we produce more brian then we produce needs to walk you through your pipe with this coming out of the discipline, discharging the straight line moves in as it flows out because it's more dense. and the temperature can also be the oxygen available. and this is what's causing actually the organisms more damage, just a lack of oxygen that basically suffocates. ah, bryan can also contain chemicals harmful to see. life needs to be a better plan for the industry of dealing with this bribes. were producing more waste with no plan. ah, what is this waste could become a resource? tomatoes, seaweed, and certain fish can tolerate high salinity. morial light uses brian to cultivate them in tubs like this is also the opportunity for the soul recovery. and the metal

recovery at the moment, the technology is automated about fire brian management. but those are very small scale. the challenge is that all weekend transform those small scale technologies into a large scale operations desalination is not a magic formula. the process not become more efficient before low income countries can afford it. nation plans must convert from fossil fuels to renewable. energy is to limit emissions. and the whole industry needs to come up with a plan to deal with this. brian facilities like this, already a lifeline for many communities. it's very important to realize that this nation is here to stay. we really need to work on solving michelin just nation in the graduate process. again, have fun overnight, but i could see that daily the bush at the same time giving that to harvest the

potential of the new to watch or town is doing a lot better and the dam is full. the city was rushing to build desalination plans to avoid daisy row, but the solution wasn't desalination or any other technology. no one should be showering more than twice a week. and the tough flush was only when you really need to flush the made of a fit in trying to use as little as possible and have to have water as if your life depends on people. water wise, they radically changed their water use. we use it consciously and mindfully trying to save valued waters for the essential and the replacement substance that it is.

and that's how it should be. by the way, you can watch videos like the one you just saw on our youtube channel planet 8th, which also has lots of other content on sustainability. now we are a business magazine and we do have a liking for numbers and bees. they are really alarming. around 820000000 people are suffering from hunger around the world. and at the same time about $1300000000.00 tons of food go unused every year. due to the lack of proper logistics or food gets wasted. because person peaches don't look as fresh as we would like. increasing self life could improve things. and here's an idea for how to achieve that fusion vegetables rotting in fields or during transportation to consumers. according to the un food and agricultural organization, or f a o. some 14 percent of food is lost after harvesting and before it reaches

the market retailer. if you go to a particular country or particular, you are likely to see varying levels of food losses. and these, depending on the situation, would go up even to 50 percent. if you're talking about, let's say fruits and vegetables, for example, if the from does not find the market for that particular food product in a timely basis. now this is huge amount of food. and if you, you convert it into monetary quantity. this is a lot and if you read it as well into the loss to the environment or the environmental impact that is also huge. when that happens, water, pesticides, and resources used for transportation or all waste is some 7 percent of global greenhouse gas emissions can be traced back to food loss and

waste. the chief causes include problems of transportation and refrigeration. the power from harvest a kitchen table is a race against time. a california based company appeal sciences might be able to help founder james rogers and his team have developed a liquid that could extend the shelf life and fruits and vegetables appeal is a little exactly like it sounds peel that we apply to the surface of fresh produce you can't see it, you can't, you can't do it. but it slows down the factors because the fruit to age help even without refrigeration appeal as a liquid coating that dries into a kind of edible skin. the coding helps the produce last up to 4 times as long that 5 time time to transport the produce to storage and to eat it before it spoils.

appeal is based on liquids and other natural compounds found in fruits and vegetables. there, extracted and blended into a taylor made solution by combining them in the right ratios when they dry the dry into an arrangement that allows us to control the factors that cause fruit to age, which are basically water going out and oxygen going. yeah. so same materials were just teaching them a new trick by finding the right formula to apply to different kinds of properties in order to give them the same kind of protection that you'd have on a women. on a cucumber or on a dutch wholesaler nature's prize cells, some $120000.00 tons of fruits and vegetables a year.