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tv   Tomorrow Today - Mineral mud coastal defense printed bikes  Deutsche Welle  January 23, 2018 1:30pm-2:01pm CET

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i use my plants on a daily basis that optimize the human body and connect people more effectively. i hope that this will make us more ethical persons what would life be like as a cyborg. what do you think will happen society does the human race need to upgrade i think it's only the beginning of this sideboards human machines starting february first on t w. two tomorrow today coming up. this month how greenland could profit from climate change. made to measure bike frames from a three d. printer. at no cost about
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a model for future cities. welcome to the show. how long will the pota regions be covered with ice the earth is warming right temperatures are making glaciers and sea ice melt. like in greenland most of the island still has ice cover hundreds of meters thick but that's set to change one geologist thinks that's not necessarily bad for greenland future. travelling through southern greenland it's easy to understand why the vikings called the island green it has hills meadows lakes and rivers the endless ice starts further north. mina grows in calls this landscape home he was born in greenland is great grandparents used to hunt here here comes loose. the prize winning geologist from
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the natural history museum in copenhagen often travels to the north he says greenland is an open book that just has to be read. it's all these rocks in the landscape tell a story but of course you have to be able to understand their language but then they no longer keep their secrets. on the contrary they're full of stories and they can hardly wait to tell them. to grow or to settle in and camillus is torah. with the help of greenland rock rosing estimated that life on earth began three hundred million years earlier than previously thought winning him worldwide acclaim . now he's collecting glacial mud instead of rocks as he searches for a new story a story that could benefit his country. at this inland spot the ice has melted.
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what it's left behind looks like a rocky desert but in fact the sludge is a vast reservoir of minerals which could help fertilize depleted soils. through this glacial sludge is from rock crushed by the ice it's interesting because it can be transported anywhere in the world where there's a lack of nutrients in the tropics and some tropics where most people live has a massive shortage of nutrients. in their stuff. the melt water transports the finely crushed much a trickle becomes a stream a river turns into a torrent leaving behind a new landscape. rosing estimates that around a billion tons of minerals reach the coastal areas of greenland in this way every year. enough nutrients. to help feed the world.
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on the way back from his hike rosing bumps into an old acquaintance more to nielson grows herbs in lettuce and greenhouses climate change is making itself felt in greenland further south even strawberries and for tito's grow but it won't be enough to create a large agricultural sector in the future. you have to be realistic about climate change it has good and bad aspects here in greenland like everywhere in the world where part of nature when it changes we have to make the best of it. but. that's exactly what he's trying to do. rosing is both optimistic and pragmatic about his country which is striving for independence from denmark. for that the country's economy has to be able to stand on its own two feet. what should we as a society live from greenland's nature is pristine and almost infinite it has
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enormous numbers of fish and very worth is steadily increasing in contrast to oil which we should leave where it is. the great torrent of sludge here behind me is the roar of money that may fill our state coffers one day. right here rosie says instead of dreaming of mines or offshore oil wells greenland should take advantage of the resources that are already available in such abundance. the powerful forces of wind waves and currents transport mud and sand from the land into the sea. people who live on the coast the familiar with those natural forces and they know they have to stabilize their shores. scientists in the netherlands are testing a new will present which. has become
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a hotspot for wind and kite surfing and a destination for holiday makers. it's just southwest of the hague on the dutch north sea coast much of the beach the sand bar that bulges out into the sea is man made it was created in twenty eleven and designed to serve as a sand engine to counter coastal erosion. marcel stephen a professor at the delft university of technology is the mastermind behind the project. and the basic idea. we wanted to make this coastal stretch over here we want wanted to make it safe for the next fifty years in the light of climate change so instead of making a. norrish mint every four years so come back every four years we decided
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to put a large amount of sediment that would last for twenty years that would distribute itself. through natural forces along the coast so we don't have to disturb the ecosystem all the time. it took eight months to build the sand engine. dredges brought up material from the seabed ten kilometers offshore and spat it out here to create a huge depth of sediment as a peninsula in front of the original slender beach. twenty one and a half million cubic meters of sand what dumped here five times as much as would be usual in a standard shorter term sand replenishment operation. the plan is for the wind waves and currents to disperse the sand from here up and down the coast replenishing beaches that face constant erosion and building up coastal
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dealings this is a pilot project and steve it monitors developments closely. it is not. as far out into the sea but it has spread. to both directions six hundred thousand kilometers north and four hundred thousand cubic meters in southern direction so nature has been doing its job dispersing the sand up and down the coast. every two months the scientists map the sand the engine and the adjacent coastline. they chant the movements of a masses of sand and record depth changes in the lagoon created behind the sand bar . radar and sensors mounted on boys track waves and currents.
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a fourteen meter tall mast was built for the project as a mount for cameras that monitor the landscape and seascape in all directions. but in that way we can observe development of the geometry of the send engine we can look at such a day shouldn't. we can look at. the way to look cool feels an empty set and how it changes so it's a permanent survey ship. the data collected over the years demonstrate that a sand engine that is a single mega naresh meant designed to last for decades can indeed work. the wind waves and currents help to replenish the receding cursed line. plants are taking root on the sand bar. grass growing on the dunes helps to secure them.
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the fish to. see live one of the main purposes of the sand motor is. to provide sand for the dunes. as we now think it will take forty to fifty years before all the sand is in the dense. dunes of our long term protection for the vulnerable hinterland but here they're not growing as fast as the scientists had predicted. the growth of joints. we expected to vote have been stronger very much slower although now it's picking up beautifully much of the netherlands lies below sea level so coastal defenses are key to the country survival seawalls beaches and dunes are regularly reinforced braced and replenished in straightening and a few kilometers to the north of the new seawall has been integrated into an appealing coastal promina proving coastal defenses don't have to be bulky or ugly corona
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fungal the mass of the ministry of infrastructure and the environment spells out what's at stake. what do we have to do for the netherlands to maintain it and to keep dry feeds in the hinterlands. in one hundred years otoh how much sense do we need to cope with sea level rise one scenario the ministry has to consider involves giving up low lying coastal areas altogether should it become too hard to defend them we don't want to think about that but maybe that's will be the case some day yes to counter the erosion of its coastline the netherlands is trying a dual strategy building up defenses against the forces of wind waves and currents and harnessing those same forces to protect the coast the sand engine project is a pioneering effort to meet the challenge of rising sea levels.
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you seem to my flu shot shows us how it's done in the jungle. book it's all about trust on the screen and in real life of your in morocco has sent in a question about an altered state of mind. sally bored joy wants to know. what is hypnosis. at this show audience members are letting themselves be hypnotized thant are the style of the hypnotist participants can't even remember their own name. hypnosis alters the person's consciousness but how does it work exactly. scientists have long been interested in what happens in the brain during hypnosis. researchers have now identified how affected areas change compared to a normal state. during hypnosis certain networks of cells stop communicating with
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each other. this creates a disconnect between actions and self-awareness allowing subjects to be manipulated subconsciously. hypnosis is now even an accepted treatment in medicine. the brain processes pain signals differently when in a hypnotic trance they're not perceived as pain. that's why some dentists have begun using the technique in place of chemical anesthesia. hypnosis can also be helpful in kicking nicotine addiction.
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and hypnosis as performance art audiences obviously love it though it's not always easy to know. the method is really having an effect or if it's just showmanship. we ask you on twitter what you think of hypnosis. every flat happy tweets that he believes in it but he advises taking someone along to a session otherwise the hypnotist could implant anything in your head. duckie em hasn't read much about hypnosis but figures the side effects of being hypnotized must be minimal. and like it all starts writes that she's planning to try it soon to overcome her though thing off vegetables.
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good luck with that i'm thanks to sally born choice for the question. you have a science query you can submit it on our website if we answer is on the show you'll get all d.v.d. featuring a lighthearted look at albert einstein's most famous theories. the most important thing is to never stop asking questions. tailor made has always been something special like closing made to fit the where a perfect. most recently it's been done with the help of technology like scanner. but now comes the real luxury up by clips made to measure the magic word is three g. printing. three
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d. printed by. science fiction. science fact engineers are getting very close to that goal. and we're now at the point where we can build a bike you can sit on and ride not yet on rough terrain. so is this the bicycle of the future. let's take a look at how the frame is printed and the rest of the components then added to form the complete bicycle. of day one in the story of a new bike. first the prospective owner's measurements are taken in a three d. scanner. the new bicycle will be tailor made for his body. this production method with scanner and printer makes every bike one of
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a kind. the bike industry works with a limited number of frame sizes but people are so different each with their individual length of legs and upper body what sets us apart is that we can respond individually and build precisely the geometry that fits each person past. the bike designers can change the frame on the computer to perfectly match the rider. so next day the designer meets up with a three d. printing expert getting the measurement data in the right format is a bit of work but three d. printing technology is developing at a huge pace. moment moment very new developments in four different areas of three d. printing number one is the increasing diversity of materials then the volume we can
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print bigger objects the printing speed is also going up it now takes half or a third. the time previously needed. and then there are new technologies being developed that we don't see yet but that are certainly coming from. today the printed frame is still made of poly a minute but eventually the engineers want to replace it with carbon fiber which is more stable and lightweight. day three and the printing can begin first a thin layer of powder is spread on the carrier plate. at the spots where the frame part is to be made a laser been cintas the powder. the process is repeated again and again for two days then the printed frame has to cool down for two more days. after that we get to see if it's all worked out there's no printer big enough to make the entire frame in
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a single piece so it's been printed in seven parts they are then glued together. this is the heart of our bicycle of the future. now freshly painted the frame can be fitted out with equipment some present day some futuristic electronic gear shifts a standard on today's racing bikes soon they'll likely be found on everybody this is spent on of the future will also be regulated electronically in this prototype accelerometers provide the data to control the springs the bike of the future will have lots of high tech even intelligent components. as with. lots of things will be easier to shift will know what's the right gear the suspension will decide whether it needs to be open closed or sensitive so the rider won't have to make those decisions. then there's this prototype of
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a new wheel this could be the mechanical innovation that will catch on quickly in the near future it enables the air pressure in the tires to be very cheering the right there on an even terrain more air on asphalt roads. and now after just ten days bicycle of the future is ready to be taken for a spin. so get your bike printed you may be. needing it soon and. many planners think that in big cities the days of private cars are numbered and that the future belongs to cyclists pedestrians and people who take public transport. a city without cars is hard to imagine but there's a residential complex in
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a suburb of cologne where this is the only kind of car that's allowed you hannah and her parents have been living here for two years sixty is the largest entirely car free neighborhood in germany it's a difference that when we heard about it it sounded so great what a nice way to live and then we came in had a look at how amazing to be able to let your children play out on the street and move around freely without worrying. playgrounds instead of car parks germans love their cars so this amounts to a minor revolution. about thirteen hundred people live in the complex their rental contract stipulate that no cars are allowed residence however are permitted to transport shopping home in a cart before the family don't do a big shop once a week by car they buy smaller amounts of fresh produce at the local grocers almost daily. it's not difficult i go by bike and i take
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a backpack along that's usually enough plus i have my bike basket and if i need to buy something fall the life you create of water i can borrow a hand cart it all works out fine. just. could carfree living be expanded to entire districts towns or cities. because john peel heads transport research at the german aerospace center the program is based in cologne motor vehicles play a huge role in the life and layout of major cities all over the world peter says that has to change. because for a city like cologne i don't think we're going to find the single fix that will solve all its problems we need a range of measures at the level of urban planning it might mean for example planting more greenery along the ring highway when it comes to transportation the
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priority should be expanding public transport at encouraging and enabling more biking and walking. this is what the city of the future might look like major arteries will be downsized there will be more open space and greenery a radical turn away from the internal combustion engine and private cars in general . goods will be delivered by electric vans bike or electro trike. thomas buses will move people around neighborhoods apps will help plan routes using a mix of transportation modes making all this happened though won't be cheap. i'd like to see the revolution we need in transportation start now it will be difficult but that's no reason to hold back and wait we need to start now with modest measures that will succeed in the short term. in this part of the city of tubing and that kind of revolution began in the nine hundred ninety s. in a district called the. french quarter cars are allowed in but they may only be parked
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in the garage at the edge of the area at least that's the idea fredo who has lived here since the complex was first developed on the site of some disused parents. he says that recently cars are once again a presence here despite the parking ban. for some evenings there are cars parked everywhere at least around where we live and the garage is half empty that can't be right. not to distrust mr. hope as those children say they enjoyed growing up in a space where they weren't surrounded by cars. as though sometimes driving might have been a welcome alternative. ah it's kinda small kids can be lazy. there were times i thought it would have gone much faster with a car. and it would have been easier to. fasten them all to.
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and go for is a breeze that chorus can be useful when you have to transport bulky objects for instance or when you want to go on an outing to the countryside for that she rents a car or uses a car sharing service she says sometimes there is no alternative. if i have to get to work by eight o'clock and the daycare center only opens at seven thirty i can't manage that with public transportation and i have to get a car share. i have that problem one day a week. the rest of the time the forza family does fine without a car there's plenty to do in the neighborhood after school. there's no question that quality of life is enhanced when lots of cars are removed from the equation there's better a or less noise and more space even in the heart of a major city. you'll find more
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stories from the world of science on our website feel free to get in touch via twitter or facebook we love hearing from you. next week we head to the bolivian capital not cars where the public transit system includes a network of cable car lines think radically shortened commutes underleaf traffic congestion charges for a ride next time to market today by phone now. the be. the be. the be. the be. the
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zener ning course eco street journal maybe see. peeps about the moments of day before. it's all about the stories in so. it's all about george chance to discover the world from different perspectives. join us and do so funded by distinctive instagram hours at g.w. story the topic of each week on instagram the. circle of fear. correspondent you're in russia toe is in chechnya. islamic state has recruited more young people here than anywhere else. and more and more attention fighters are now returning home they're both respected and feared how will this affect chechen
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society. circlets fear today on t w names. in a. place . this is coming to you live from berlin to kids of friends of on kurdish militia inside syria enters its fourth day to ground troops in allied syrian rebels advance on the could often. president vows there's no stepping back and moves to silence dissent to get the latest from istanbul and also coming up the world
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economic forum opens with india's prime minister as the deists attraction not in the room or the count's indians during.

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