to my name is some way to ship me. i'm assuming reshaping history. our documentary stops april 6th on dw, the wireless charging has become a common feature in many cellphones or electric calls. next. it's technically possible to transmit pilot, not just to cause, but also buses and trucks, even while they are in motion on the show, they will take a look at how it all works and check out the current state of inductive charging in vehicles that are on the road, is it the future of transport? that story and much more this week on the dw sign. so welcome to demo a today the electric test car that charges up while i'm moving down the road. as it rolls along

the test track, the batteries are top top guy, pardon me, about awards and even if it's snowing or raining even without any direct contact between the car battery and the road energy can be transferred from one to the other on the smooth university the really innovative thing is that the charging is roughly as efficient as with wired says die spar with cobblers. get food then is a statement. the team says 92 percent of the energy from the charging system and the road actually reaches the vehicle. an unprecedented efficiency rate is really company. electron has demonstrated that the technology works in principle. and the 1st modules are already being installed in some short stretches of road, together with the university of ad long and in germany. the firm wants to build a one kilometer long test track on a freeway in the bay area by 2025. so how does charging while driving actually work

are again, technical terms. once that is possible, hills installed in the road carrying the alternating current which creates an alternating magnetic field. and that feels generated by the magnetic coils and the road transfers energy to a 2nd magnetic coil, and the car generated current to a wireless process known as induction. the system in the road also knows the cars location. that means data can be transfer. so later, the system can determine who has tanked electricity and how much important information for billing experts say an e car is range could be increased by 20 percent. if long enough stretches of highway are retrofitted with this technology in the future. but highways aren't the only place street induction has been considered. where might it appear 1st? because i'm in the mid ultimately be more successful in the city traffic where

smaller electric vehicles are more likely to be usable, so we're on highways for longer distances. it's the market that will decide side. the idea is not entirely new. an induction e bus called damien, that's been on the road in the german city of orange, 5 since 2014. the charges at a bus stop. not while driving a few parking spaces of also been equipped with inductive chargers for charging one on the road is mainly been tried in bosses. one energy provider is testing a 100 meter long section of induction, capable road and cost of what it has an efficiency of up to 85 percent. the technology will soon also be tested and autonomous cars that could help eliminate unnecessary downtime for charging and increase range. but if enough roads are converted to normal drivers could also benefit because batteries and commercially available e cars could be less bulky than they are now. might the technology, perhaps even save electricity in the future?

the spots like the blank because it will be lighter, so will consume less energy but still have the same speed and characteristics are full. so we'll save electricity spot. but since building the new infrastructure will also require energy, it's not yet clear whether or how much electricity the technology might say. but one thing is certain. since inductive charging would lead to smaller batteries, it would reduce the need for lithium and rear arts. but do magnetic coils has to be installed and the streets could the same thing be accomplished with overhead lines tests involving them and electric trucks are under way. wouldn't they be cheaper to my mind? your mind to think so. but overhead lines are always problematic because my, when there's freezing rain, for example, or even just during different climatic conditions, then energy transfer is less efficient. can you get back to, pardon me? so i think 10 the road based magnetic coil technology, by contrast,

works and bad weather, ice and snow. and even though inductive charge, it could also benefit cars. they can't reach overhead lines. only trucks and buses can. incidentally, the magnetic fields on converted roads aren't dangerous for drivers or pedestrians but at around $1000.00 euros per meter building cost. the technology today remains far too expensive for large scale expansion. but that could change by there's a funny example that fits the conduction stove. so the 1st prototypes were extremely expensive. now they're cheap. i think we could push the price down to $300.00 euro. so for the indian stuff. if the technology grows cheaper, induction capable of highways in the future could be only slightly more expensive than conventional ones are now in. so i hope that it will be feasible in 10 years or less. as soon as we agree on standardization and regulation laws, i mean after that, things can move quickly. what's still missing in our uniform standards that all

manufacturers have to stick to. that would ensure that the infrastructure could be used by everyone. but 1st, the technologies advantages has to be demonstrated convincing way. let us read, why are they view of a special science question? send it to us as a video, text or voice mail. if we on switch on the show, we'll send you a little present as a thank you. come on just task. this week's view question comes, one's divide be in zimbabwe, the what causes the mile? the electric shock that's sometimes occurs when you touch something metal, everything around you and your body as well is made up of tiny adams. these in turn contain electrically charged particles. they are the positively charged protons and

the atoms nucleus. and zipping around that nucleus are the negatively charged electronics. so your body is charged and electrical charge normally flows back and forth between you and the environment. without you noticing a thing the moisture in your skin and in the air helps insure the charge doesn't build up. if it turns cold and dry though, charge exchange no longer works as well. when you then walk, for example, on a synthetic carpet and shoes with rubber soles, your body grows more electrically charged with every stuff. friction causes electronics from the carpet to transferred to your body and accumulate there. because rubber is an insulator, the electronics can't flow back into the carpet. the same thing happens in this experiment. inside this metal spear are rotating rubber band releases, electronics,

charging, disappear electrically and causing the plastic strands to rise in the air. the same happens to the hair on your body when your negatively charged, and when an electrically charged object comes close to a conductive material or a body with an opposing charge, it discharges southern light up to 35000 volts can flow through your body, causing an unpleasant but harmless electric shock. keeping the air from getting too dry in your home or office. regularly applying moisturizer to your skin, wearing shoes with leather souls and choosing clothing made of natural fibers like cotton. those are all steps that can help prevent shocks. electricity can be tons to do all kinds of things like coming to supplement and to go skiing and some of the energy that drives cable railways can be recaptured from the brakes and used for other purposes. one hotel in switzerland has con estate for

heating the store spawn in switzerland. does the steepest particular train route in the world. places the cable railway car climes the gradient of 110 percent rising up from the municipality of fluids to the winter ski resort of stores at 1300 meters. because of the steep terrain the train often has to break hard. this generates energy that can be recovered enough energy, in fact, a heat, an entire hotel built next to the trucks. in technical terms, the process of capturing this power is called regenerative braking engineers and a call explains the principal. linda trains engine room, me thing. yeah. because the entire drive train at 1st when starting off, the train needs energy to pull itself up. the steep slope through the car is then past each other in the middle. that's where the tipping point is. then on the thing

they call, this means that the electric motor 1st requires power and then starts producing it halfway uh, we use this electricity to heat up the water to me. and the effect is a surprisingly big one. for 110000 kilowatt hours of energy is generated by breaking and waste heat yearly. to get the equivalent, you'd have to burn 41000 liters of heating oil. it's energy the hotel can tap the generated electricity, heat water, just like a plugin teakettle. there are large water tanks in the basement to store the the fact that the hotel is located right next to the station is ideal. for see back be due to rain distances mean less heat loss, i would say in terms of construction. that's the thing. so close meant far fewer interventions to set up the connection. yes, the hot water flows to all of the hotels, $100.00 rooms and it's kitchen. managing director, mazda neu,

house is happy to tap the energy from the mountain railroad for heating, especially in an era of high energy prices. near the end on the dealing with this story is fine and you can purchase electricity at a discount on the how no mortgage kind of the money we pay, it goes straight back to the train, looked at actually the so it stays with us here locally. will meet the end, we have a small circular economy going. it's a perfect fit for us and who handles the fairies both as i'll throw down many hotels and restaurants in switzerland are located near similar stations and they have big energy needs. so there's huge potential for other projects. according to engineer olivia do veneta from new simmons university of applied sciences. the sustainable idea can easily be modified for other locations of the yeah, the know he's the zipcode. the application itself is not very complicated, but the cable car technology and the building technology you have to fit well together. if they do,

you can get great projects off the ground and you come on the political yet the foot license back to the mountain for the 1st guess are being welcome to the newly built stewart lodge. it's cozy and warm, a task. that commands you can take a longer hot shower here with a clear conscience, we spoke with a warm showers heated by the brakes of a nickel or train, as it slows down on the world. steepest set of tracks energy from the brakes on a mountain train could theoretically be used to do things like pallet also officials slow kind of the growing less common in switzerland. because another firm has come up with climate friendly snow lances, which make all the technician snow without using any electricity at all. at the may say food ski area,

snow production is in full swing. the resort use is what are called snow lances for the task they work entirely without electricity, the head of the company, the manufacturers, the close down the shows off the revolutionary technologies latest design, both as yes i, it's nice to this is our most recent model which has a 3 head diet, it's all about making as much snow as possible in the shortest possible time said warmer temperatures to t fault. he's proud of the most powerful machine in his line up. do you know what that is? so from when new models work like they do here and the water really turns to snow, that's great. the snow making firm operates that kind of open air laboratory and the sky area and works together closely with a team. it makes a foot and has been testing snowed, lances here for years. they play a key role in creating good peace alone, and in fact, without the lenses,

as the head, snow maker confirms the resort would be hard pressed to survive. only without artificial snow. we wouldn't be able to keep the ski area in operation. we can't rely on nature alone. the since actors played rolls in the decision to use energy efficient snow lance's method of loans. we rely on them as easy, they're cheaper to operate and to maintain. and they're less unsightly and us landscape and a tower with a snow cannon on top of it. as a rule to produce no most conventional snow cannons and snow, lances need compressed air and generating that requires energy. but the lances can obtain this energy from naturally occurring water pressure. canons can it's been a long road for the company. the 1st reports of a switch made 0 energy snow, lance 1010 years ago, a metal monster called messy 0. he tested where else that makes

a fort close, done. it was there to use the theme explained that the device makes no without energy. it's a counter intuitive idea in all the and that's because they get all the energy they need to do it from the water spring at high velocity out of the nozzle. so from flat it comes from a lake higher up in the mountains and see within the difference in altitude between here and there. she provides plenty of water pressure. and if you just see that will cost us with a home fission to yes. that 1st field test 10 years ago was a milestone. not even if not everything went smoothly. it's very, very simple. this is you know, i mean we have some minor problems with clogged to nozzle due to dirt and water that wasn't filtered. there are always little unforeseen things,

but now it's working is it should and dine delighted eyes to these over, excuse me. yes, we do up there. you can see how the nozzle on the left vaporizes the water that's on the beach. so those water droplets have been blown into the path of a jet of ice particles exclusively, and they mix together and the water droplets freeze creating tiny balls device. and that's how artificial snow is made on the consciousness messy 0. he worked, laying the groundwork for future generations that the device y'all's detail every august since then we've continued to develop these snow lances that work without energy input. it's we can now produce 3 times as much snow and even in the border line temperature range, they can still produce a lot of snow in a couple of. as the snow advances are made in the town of m in boca over a 1000 units leave the automated production facility every year. the company's sales doubled in 2022 years in san suite and we're very satisfied. it was

a very good year so that we always incorporate technical innovation that helps our company move forward. language toilets and the threat of energy shortages has given the business with efficient snow lance as a boost. more and more ski resorts are switching from conventional snow. canon's, so what does the future hold tail rate to ship it's t like i m theory, at least we've achieved the goal of 0 energy and snow production. but there are always new challenges. so it's like a shorter cold periods and longer warm periods. thing was involved in november or december and you sometimes have to have all the slopes covered in just 3 to 4 days . that's why we rely on multi headed lances for a lot of coverage and a short time. this is just one small section of a gigantic suspended snow making machine. the technology could potentially be used for more than to just save ski slopes, a plan and visions,

it stretched over the disappearing more to arch glacier. to cover the ice with a protective layer of snow and possibly delay its melting by decades. the company is supplying the key components for the project. but isn't the idea of little over the top? it's all that we believe in the project and are sure it's going to happen. the glaciers are melting and once they're gone and we won't be able to get them boxed the, let's use our receding and the out of the know nominal pace due to climate change. the mountain range is moving and such to have been in other places and that has knock on effect. so many animals, including migrate tree beds, some know, find it more difficult to cross the outs as they head to will more times in winter

. among them are free seats that disappeared from your skies, centuries ago, which experts and now trying to re introduce the node in bold ibis on your mark gets that and there off a flock of northern bald ibis is, is learning the best route to southern climes position the 6 it's in the 16th time, i've taken a trip like this, but never won over such a long distance. one, it's a very special moment that comes up is on the moment. it's 7 in the morning at spinning an air field on lake constance. you'll honda splits and his colleagues are making final preparations they've been working towards this day for months. the team wants a guide, young boards on a new migratory route. this probably didn't part of the problem is that when left to migrate on their own, let's say northern bald imus is now leave later in the falls because temperatures remain warmer for longer was and

a last year they only set off at the end of october are consumed, but their normal route is over the hours. and later in the year they struggle to fly over the mountains because they don't have the thermal super for the binding. down them exceed the northern vault. i but it's could once be found all over europe . then hunters drug, this species to the edge of extinction. this project has helped establish several wild colonies of the birds in germany and austria. they usually spend the winter in tuscany. however, as the climate change is so does their migratory behavior. because the elves are becoming such a barrier this year the flock will head for and to lose you in southern spain. the young bird should be able to manage that even later in the year of the birds were born at the end of april. that cause was due. the northern bald ibis cheques soon get used to their foster mother's helena and by the flight training at lake

constance begins in mid may. the birds quickly learn to follow their to humans, even when they climb into ultra lights and take to the air. again i didn't want to get them this, but we generally encourage them all the time, so we call out to them and try to cheer them on a bag so that they stay motivated during the flight. i haven't got them through from the wheels. the young, northern bald ibis has managed a long journey to spain. the 1st stage is a risky one. the birds are flying lower than flocks and previous years. and this far down, danger larks. many high voltage power lines crossed the flight path. this is the she is not so great to fly, so low as a pilot and we really have to take care of. but we also worry about the birds a lot because some of them fly under the lines others through them or over them. i'm enough to do that, but after a 70 kilometer flight, all 35 birds in the flocks,

land safe and sound at the 1st planned side as they are, they get a tasty treat for making it this far. neil armstrong, helena and bob hood, then wait with their charges until the other team members arrived to set up the aviary. the temporary lodgings for the young, northern bald ibis is, are transported by grounds and has to be assembled and then dismantled. after every stage. it takes a while for the birds to move into it, but the foster brothers are patient and the end of a vague stuff at the moment. we're just happy to have completed the 1st stage. so if everything takes half an hour longer, that's no big deal. you can't stress out too much, you have to give the birds time. that's the most important thing. otherwise they won't come down at all. and after a one day break, the journey continues the flight down to lose you as almost 2300 kilometers, nearly 3 times the distance to task and it will the birds make it and will they be

able to find their way back? we're putting into 50 and we'll get the birds down there, hopefully, and then release them into the wild and see what they do have nowadays survive which habitats that you need to find. and whether they decide to fly back to germany again, or line next to ball loose computer, how fleeting? if the birds do there are plans to settle them here and few by like on lake constance. it takes 3 years for northern bald ibis is to reach sexual maturity and make their way back to where they came from. as they've been in that i. and when the 1st birds come back from spain in 3 years time, unless they meet another northern vaulted bits along the way, it's very likely they'll return to the near field where they were trained where they grew up and, and then we can catch the oven down to the colony here reset the animals and humans face constant challenges on their long journey. at times,

strong winds disrupt the flight plan and attacks by birds of prey or regular danger . members of the flock also disappear occasionally. most are found again, but 3 of the birds stayed missing. despite those hurdles, 6 weeks and 19 long stages later, the team reaches the south of spain. yet kind of a reason for joy back in germany as an opportunity to catch up on the progress of the project. i'm a former foster mother asks the new ones how they're settling in a report that their spanish counterparts have been very warm and welcoming and find that the northern bald ibis is our slowly growing use to their new environment and and to lose yet the spanish partner project on site for a later integrate them into a permanent colony in the area, the zip codes as much to look with a barbara and helena say they're returning to germany. i feel like they're leaving their birds in good hands. they'll return in december for the release into the

wilds and tell them to sun out. for now they can enjoy the satisfaction of a job well done. and hope that one day their boards will dare the long journey. back to germany. do you have a passion for science and health? check out d. w signs the contract talking. why do something does not get drunk? why do gravitational waves squeeze out bodies? how much more say do we need to pay days? do stressed out on screen for help. know, and what is the perfect queue of football by find beyond says yes, mos on dw science. oh tick, tock, channel. that wraps things up for this time around for tomorrow today the science. so on dw,

thanks for joining us and see you again next week. the, the, the

state breathing life. but how do you protect your airways? and what should we do if we have asthma allergies or a cold? and when do our loans reach their threshold? so breathing, read out and tune in to find out. in good shape. in 30 minutes, dw, welcome to a place that gives a lot of things right. copenhagen's, bustling bicycle friendly city is known for his design and architecture. the data

is capital might give us a glimpse of the urban future. copenhagen hits green, sustainable as in 75 minutes on d w. the trends, news trends and nature defend itself in case of an emergency. we cannot guarantee that we could protect community frankfurt. berlin tend to face with russia. is war against ukraine. the rhodes grace's ministry line shows weakness, which is a holiday from reality. and now we're dealing with the consequences of the

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or you're watching the news coming to live from berlin on the parents is really air strikes, kills of several aid workers in gaza. a vehicle from your old central kitchen is hit during its operations to provide badly needed quotes for people in casa strikes, parks international calls for an explanation as israel falls. the incident project says it is investigating another suspect. it is rarely airstrike his iran diplomatic compound in damascus. officials in syria confirmed there have been deaths and injuries. it runs revolutionary guards as h.