swastika, a documentary about this sounds of power, inspiring story about survival of the home and you go get the tennis. i was the only one. usually in nazi germany, watch now on youtube. dw documentary. the out of the 225 windows, if the nobel prize in physics just fine. so women, in fact women are under represented generally in the subject in western countries in particular that were found fewer female physics students and 3, such as the male. how do you get goals interested in physics? perhaps with an exciting experiment. welcome to dw science shape, the

. the object that's crushing down here comes directly from the stresses fair. it's the results of in months of preparation by students at this old goals high school in southern gemini, a few hours earlier, final preparations are on the way. so the experiments, it's a joint project between the school and cosmo is university of education. the aim is to launch a high altitude weather balloon with a measuring crow into the stratosphere. everything's being planned and built here and include some age appropriate propes. as we've started the chocolate marshmallow on that with super glue so that we can see how much it expands in the. yeah, the emphasis on practical work makes the learning relaxed, almost effortless in the bottom line is on a weather balloon. probe a power shoot. it's really swelling, so i'm very excited now and i've found it really exciting the topic house and what

it looks like help desk and what will happen tool the palms when they're out that hasn't been posted. i've always been interested in once. it looks like up that what the us looks like from above to me, it's just, it kind of fascinated me, i think going to move this kind of top. everything's assembled full, measuring devices that are onboard the gps track, a working time for a final check. for insurance reasons, the pro must weigh no more than 2 kilos. the experiment has a further purpose beyond the obvious how to get goals interested in physics and how to make teacher training and science subjects. interesting with more practical experiences on my list to nancy's response, that's what we've learned. most is how much fun it can be off in the gums, the gums, noisy other devices in a really curious way. what's interesting to us. yeah. and then approach the physics that we need for that is it the math is inductive. awesome. and kind of a kid we're not doing well, keeps science,

we're doing an educational project. and at the same time we're learning about the composition of all right, ms. vega. and perhaps also how unique this plan is that we're living on right now. and then regarding the university students have helped supervise the people's it's a fault and the physics is so relevant to everyday life out of time. also in situations which you don't yet know, perhaps don't even think about the thing spot in the, in the exciting thing about physics is that many people don't realize that it surrounds us. eventually, every moment at the launch, it's clear that this is all about physics. the, the pressure is on 5000 liters of helium. and the whole school watched countdown time the balloon rises rapidly. soon it's no longer visible. and

then people, students, teachers, parents, the chase is own on that land very exactly about that. and then the gps transmit to temporarily fails, is the probably the last time in newton's in the balloon is full cost to land in a nearby town. what's this noise? that's all the blueness mandate that they're in the tree at the top left the slate. did it guys the victorious ending? was about the house, the most. my uh that is next a bit small. the highlights, analyzing the camera footage the

the that that's also cool. really cold desktop the radiation measuring device has had enough because too much radiation. mm hm. that's what was be paying now. yes, it reached its daily maximum doves on the desk or i find that in physics you just discover things. i don't think you really teach it, you experience it yourself, and that's what i think we did today on the i'd say we achieve what we want to achieve as to the pollutant maintenance of the shop. a few weeks later, a debrief obtained altitude. 34602 meters, a 2 and a half hour journey into the stratosphere and the high speed return. when in missile

some of the measurements what well others less. so that's just how it's used in physics. we're still working to save a couple of the data sets in today. we evaluated what we already have. they're gonna ask about the assignments when we were a great, great and had fun. we were interested in the solve the task force. we were given really well set time with good news, which just shows that education can be simple when it's fun. face trouble is another male dominated environment. to date, just 12 percent of students have been women. and yet to study by the european space agency reveals that women a fallback to suited to space travels and map. they have more efficient metabolisms and consume fewer resources. including space pools on demand o l. v e from mexico has sent us an interesting question about that topic.

how is it possible for astra notes to do space books are working outside a station or vehicle in space is by it's difficult and dangerous. it's extremely cold where the i assess obits and there's no human beings would perish after just 30 seconds out. that astronauts can only survive in space wearing special seats, which are effectively like small spaceships. a rock sank, supplies them with add to breeze, and also removes exiled carbon dioxide. the seats have several layers, they need to be gas tight and with stand excess pressure. the outlet is made of fire retardant. catalog coated with a menu of the suits protect against the vacuum as the cold, as well as mike cray, meteor writes, and solar radiation special underway with tubes through which cool water flies

prevents the asper notes from overheating. during this strenuous look as to trains of space missions in special swimming pools like type is that more than $100.00 killer heavy suit substituted with whites which allow them to flight corresponding to the conditions in the international space station is a waiting list environments. this is because it will bits the so fast that centrifugal force of gravity balance each other around. it travels 7 kilometers per 2nd, the, the asteroid, some losing at the same speed. but they didn't notice it. physically speaking, outside the station there in their own little bit, even a tiny cushion movement can alter this old bitch and caused them to drift away that the up guess that i still have already lost

they wouldn't be able to return on their road. that's like extra notes that tended to the spacecraft at full names. in 1994 nessa tested special get backpacks. these with develop submissions were asked to notes have to move far away from the spaceship. for example, to capture stuff to lights, the in an emergency astronauts can ignite this thrust as to stabilize that position and then return to the ship the during extra the hit killer activities. only i assess astronauts a secured with 2 texas. these lines of attached to poles and candles, which the astronaut seems to move around when they change position, at least 110th mis ways be attached to the long distance is the ask, you know,

so, so tulsa on the right bus, take home to the deployment sites, special platforms for that fee to help them securely in place. we low phones are in your questions, do you have when it so you send it to us as a video, text or voice message. and if we don't switch on the show, we'll send you a little surprised as a funky to come on. just off when it comes to choosing an apprenticeship in germany, goes typically up to train is assistance and the business or medical sexes boys tend more towards mca tronics will become electricians. career choices are still very much shaped by stereotypes, but it doesn't have to be the way a step and prefers action instead of tools and doesn't want to go to university right now. she belongs to the generation campaigning for climate protection,

but that's not passing. she wants to learn practical skills to protect the climate posts of provide from drinking water treatment, softening systems, not sol, positive on the job, and so we might even have a drinking or to shortage in the future. so how can we use raymond wheeler and all that's at school? i'm practically too well in the construction site. there's plenty of, you know, there's definitely something to be gained from taking to the streets. i'm all a full bathroom, but i'm the kind of person who prefers to create solutions with my other times shop . first of us today, the 18 year old is 15 ventilation pipes. so far her favorite aspect of the work has been in customer service. she enjoys educating people advising them on climate friendly technologies. this is mine, i'm training to be a fun mechanics. assignment tree heating and air conditioning is that's the full name on her instruct to boost and you see shows us the main heating we get to that with the latest technology. does that stinking with a storage? right?

no, that's the buffer time keeps different. yeah. a footprint got top grades at high school . let me finish, did fall off. she's chosen this male dominated profession because she wants to make a difference. so i'm not to even do something for the local environment. and that is unity. i. that's the right has to teach a right. if you can do something yourself on the sites, don't expect others to do it for you. the tech is always developing and this is the next generation. so it's very important because that's what this is. every fish commitment to the climate has grown. in the 11th grade, she writes the physics paper on site title tags and fell in love with renewable images. she's being fascinated by the subject of a sense. spending session in those bar will be there in the construction site since those being supplied only with heat generated from the ground. and as a young person, it's so amazing to see that you can get heat energy from sources other than fossil

fuels to come. by default it makes you really have pictures of the one for the step about parents is that cadet makes a proud of that door to end the path she's chosen. well, the is to be less supportive with her. that's much of a less my, maybe i'll become a mazda trades pass and spoke to a degree her friends got it. i'm gonna find the most of my friends and studying, but they were actually quite positive about it too. they usually say, okay, i wouldn't want to do the job myself, but we do need people who do thoughtlessness has both as well to the point where we have no option but to can. now, if i've done to chosen a profession to which she can make the world best to place the ventilation systems like those the 8th of planned works on becoming increasingly important. the career and a virus pandemic made many of us aware of just what can collect and not into

on keeping in those spaces. well ventilated is still vital. an ad quality measurement campaign as an elementary school in switzerland is a way to go, you know, into team from the school of engineering and architecture and sleep with are in storing senses for potentially hazardous pollutants, both inside and outside. the data collected from around 25 switched schools, shows a clear problem with the quality of the this is the case in many buildings where people spend time together overall to be sick. we now know that the variety of pollutants is found in indo ac

and have a significant effect on our house. the monopoly ones pollutants has already clearly demonstrated this corona virus. it wasn't so long ago that students were sitting in school classrooms with the doors and windows opened. several studies showed that there were 5 few infections in well ventilated rooms, that input events, and they could ones the pandemic put at quality firmly on the agenda. i'll send you definitely do that. can you send through that into at quality was suddenly a token point student again. unfortunately, since then, people have phone and back into old habits and the lessons learned from cove it. and now having little effect, wonder if it was all the ventilation behavior is now knowledge the back to us. it was before the pandemic, and yet people typically spend 80 to 90 percent of their lives in those schools can house a high level of pollutants in addition to viruses? c o 2 often accumulates and then and then with fine dust mode, schools,

and different chemicals. and many pumps of dwelt radon is often also present or radioactive gas semitic from the the resulting mix. you can be bad for our house, invisible and potentially responsible for diseases such as asthma and kemp. sit in the long term to let it go yet know, sees an urgent need for action. in 2023, the arrow biologist attended the w. h chose 1st indoor at quality conference in them. switzerland. it same was to raise awareness and bring decision makers and massages together. that message was clear. visualize in the visa make in durham are visible. when i go to the ball is it was to me or into twain button, subject consultation. i need to know, is it an i was safe or not? so i need to see that visible at the conference. the indoor at quality was also measured encouraging room temperature, humidity,

and c o 2 levels. although not toxic can high concentrations, c o 2 can impact wellbeing. and the gas is also an indicator of, of pathogens. if it exceeds a certain amount, an infection becomes more likely as yet there were no binding limit values for c o 2 or other pollutants. so that the w h o is developing recommendations and then decision makers, either at country or international, are using them to set standards. in my view to confirm that the responsibility of the state of decision makers, you said regulation sidney loudly as we have a right to clean water. we also have a right to breathe clean and we might not, and we should not come from ice on. that's right. and kind of nice, centrally pure,

so i'd like to mention every building, even every we should be equipped with systems that accurately measure toxic pollutants as well as c o 2 and which ideally automatically exchange yeah. for example, via and mechanical ventilation systems. these need to be properly adjusted, but that's not always the case because the study for free. what reveals to all that good out of 11 schools studied almost all ventilation system that have very different values, even though they have the same purpose. namely to ventilate classrooms of similar sizes with similar numbers of students in the fall semester. on top of this even well maintained ventilation systems make the very dry, especially in winter, an ideal environment for virus that supervisors succeed. you have to find the right

balance between ventilation and moisture recovery to limits, infections, especially viral infections that there's a fix you on the motion. and if you have windows that can be opened, it's a good idea to add rooms regularly and extensively the exhibits and museums that typically protected from environmental damage by being kept in display cases. but the air within these can itself pays of risk. now research has a testing out a surprisingly simple solution. the festa colberg fortress complex in bavaria boasts of valuable glass collection, including unique's, right to glosses from the renee songs and precious cloths where from the 16th century the collections conservatives have done everything. they can to preserve these treasures,

which it's most enough display of drinking glass contains fine. mike cra, cracks is this clauses. this cost is about a 150 years old, and it's being damaged by formaldehyde. this is, this is one of the main guesses that we have to content within the museum. was this damages caused by the depletion of substances, the to dissolved out of the gloss resulting in these micro credit. just curious to know some flaws and others. interesting because i said, what's challenging is that the home full substances are in the arrows, the display cases, they come from a t sips, for example, or textile coverage. now, scientists from zone on to university of come up with a simple way of killing the pollutants by using salt solutions. these are made up of water and various thoughts like potassium carbonate or potash, positive stuff. because i think this as will depend on this assault solution, such as potassium carbonate to be placed discrete in display case in the should,

then absorb pollutants, say for a long period and protect the exhibits. acetic acid gas is a pollutant that can damage museum exhibits or if i believe god is colleague, want to show how potassium carbonates can render. this homeless, the tube of folders represents the meaning, showcases the one on the right to contains the potassium carbonate salt solution. the one on the left contains v as as soon as the a c take, nasa gas is injected. the gas concentration in the patrol is rising. right in the bottle with the salt solution, flew in the bottle containing time. then it's time to wait a few minutes. let's just take, i'm sure you can see quite nicely here that within 2 minutes the potassium carbonate has taken most of the a c take acetate out of the demo victory here. in the example below, you can see that the casting is still in yeah, leaving it to damage the exhibits. so how does it work?

the polluting gas flows into the mini between the attractive forces and the water molecules drew a large number of a c to acid molecules into the salt solution. the potassium carbonate mendez, many of them homeless through a chemical reaction. this leaves space in the salt solution for more as a home full gas, which continues to be attracted. some of the a, c to acid molecules escape and turn into gas again. but then the drawing backend over time the process comes down. then almost all of the home for gas is dissolved and the liquid and no longer poses the risk. the next step is to place the salt solutions in display cases that are over 60 museums in the festa. co book is one of those museums, keen to put the salt solutions to the test. the museum is a special case. for the past 2 years, it's been using

a salt solution will be it's magnesium, co ride. that smells effective against pollutants such as a c to cas 8 o formaldehyde no has not been mismatched, but it is against damage caused by moisture in the display case, at 1st kite had the face moist. it has the ability to draw all components out of the glass. if you don't do anything about it over time, the cracks will run through the entire loss and can cause it to for the pot to induct as glass. open enough it to avoid this, the humidity and the display cases must stay at a fixed level. something the magnesium co ride previously insured is very human. death flows into the display case, and some of it reaches the magnesium fluoride salt solutions through the cracks. a large number of water molecules, a tube from the yeah, into the salt solution. the add becomes dryer until this a constant humidity of 33 percent. if the air is very dry and winter moisture

levels drop in the case, then many water molecules if operate until the humidity with tons to 33 percent a simple and effective regulation system. now i have a flush, a lot of things. however, recent research has shown that 33 percent is actually false, too low, especially for unstable and sick class to. so we looked for other salts that could keep humidity at around 43 percent, and found potassium carbonate could do that. it's much better to sit gloves fewer best so, so potassium carbonate solution can rent a damaging gas as homeless and also insure constant humidity. this is important for many exhibits. the salt solution is also easy and inexpensive to produce, making it perfect for small museums with limited resources. heineken eve is now replacing the museums, magnesium, chloride solutions,

with new ones made from potassium carbonate. he's came to from down. what does the optimum humidity level in the display case? really remain stable at the moment? humidity is that 69 percent decides it's over the next 6 weeks. the potassium carbonate should reduce the relative humidity to 43 percent and connected to 4 to 6 weeks later. the humidity in the showcase. uh is it a constant? 42 percent dust and that's a super result. the way more than happy with it doesn't get any but has a nice to ensure that the display case tricia is preserved as well as possible. 38 museums in germany and 24 across europe. i'm the us and now testing the sold solutions, the pump set from us this time on dw

science. i. thanks for joining us. i'm see you again soon on tomorrow today. stay curious. the,

the the reason that we talk about private data isn't helping to slide crime. social media tends to shift because our digital network will notice. so one of the biggest challenges we'll talk about that shift in 15 minutes. on the w 2 covered, the target is issue to use finger to do with

a so you can start taking a specific area. then if given square needs in general, those 10 allows you to step you're going to be wasting any more water for energy. thanks to these new digital and sustainable technologies. the co advocate in 30 minutes, d w, the think the oldest twice. think ahead or was outside the box on your but always remember this thing for yourself. we all had to sign was incredibly low. this

finding you with free information. these are what you made for mind. hey, you looking for something of the welcome c d w. your portal to alex channels. pick trailers and clips from us docs and in the story here. oh, just a click away watching this video. see what's going on. hello, and a warm welcome to you. would you mess around with neat, unusual people? yes, i am crazy. describe this fascinating cases. you have a global perspective. explore great ideas. let me show you.

contains 9 dodge your journey. get in by the business. dw news live from berlin, former us president jimmy carter has died at the age of 100 after a rocky single term presidency in 1970 is with some major foreign policy successes . he devoted his life to humanitarian work and was awarded the nobel peace prize for his efforts. bus stop, we observed a week of national morning following the worst ever plane crash on us soil. investigators are searching for the cause of the disaster. they've left a $179.00 passengers and crew that the

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