hello, this is bbc news. the headlines: the speaker of the us house of representatives is in poland after meeting ukraine's president in kyiv — saying american support will continue "until the fight is done". we are proud to convey to him a message of unity from the congress of the united states, a message of appreciation from the american people for his leadership, and admiration to the people of ukraine. russia's ministry of defence says forty— six civilians have been able to leave residential buildings next to the besieged azovstal steel plant in mariupol. defending the black sea port of odesa, but fears grow after the airport runway is damaged by a russian missile strike. politicians in the uk welcome the resignation of conservative mp neil parish, who admits watching pornography in the house of commons twice. the commons speaker, sir lindsey hoyle, calls for "radical action" to overhaul working practices in westminster. now on bbc news: click: could solar solve the energy crisis? as the energy crisis ramps prices up ever higher click explores whether the latest generation of solar tech make installation is a no—brainer. another chance to see how solar is taking on the energy crisis. how green is your wardrobe? we have scores on the drawers. and then the time we did a deep dive into the deserts of dune. solar power is the earth's most abundant energy source. and today, that goes far beyond simply plonking panels on rooftops. we keep seeing scientists develop new ways to make the technology more flexible, more powerful and more useful. this factory in stockholm is making ultra—thin solar cells that don't even need sunlight to harvest energy. the idea is that they can be used outside or inside your home to power products. i'll be showing you later on what that means for various devices but, first, here's dan who's been looking at how solar could help the energy price crisis. dan: although most of us like the idea of clean energy, so far, we've not been persuaded. maybe it's because we don't own our own roof or it's the upfront costs. maybe we're thinking of moving and we can't take solar panels with us, orjust those are glaring, large slabs isn't quite the look we're after. so i've been to the homes of two british start—ups who want you to look again. this is the solivus arc. its curves are wrapped in an organic solar film, which doesn't contain any toxic substances, nor rare earth materials that could require mining. and so, it has a much smaller carbon footprint than traditional panels. and that's not all. the arc is designed to capture sunlight throughout more of the day, and that's partly because it's got five surfaces on which to harvest energy. and this curved design means that it usually has a sweet spot, which is very useful at the start and the end of the day in particular. i think it looks quite futuristic, and if solar sculptures like this were to catch on, i could see this being seen as a sort of carbon neutral status symbol, something for the neighbours perhaps to gawk at. i don't like the look of conventional solar panels. ijust don't like them. so i thought, "well, i want to get the home energy—independent but how can i do it with avoiding solar panels?" so i started looking into new solar technology that was out there. this is solivus�* testing yard in kent where they've been adapting the shape of the sculpture to maximise efficiency. the multilayered solar film used is provided by german firm helio tech. these solar panels are made up of three distinct layers at the moment and the top layer will capture the high energy light. the middle layer will capture the sort of visible light and then the bottom layer captures more of the infrared, more of the heat. so maximum efficiency for conventional solar panel is about 33%, whereas for this technology they can layer it with in theory as many layers as they want to choose different parts of the spectrum and capture overall more light coming in. despite this sunny outlook, today this solar film is only 8% efficient. with a10% version expected later this year. last year, that may have been a problem — high initial costs have dogged solar as a cost—effective option. until the maths changed. driven by supply issues and fresh demand from a world recovering from a global pandemic, energy prices are surging. more than 50% in a matter of minutes. and that was before many western nations imposed sanctions on russia's gas and oil following its invasion of ukraine. with the uk's energy price cap lifting next week, many household bills are about to soar. from around 18p per kilowatt hour last year, the variable rate of electricity is expected to jump to more than 26p by the autumn and at least 32p if you want to fix your prices for a year or more, depending on where you live in the uk. at £3,500, the arc isn't cheap. but it is guaranteed for 20 years. it's film panels which are upgradable are expected to produce an average of 1,000 kilowatt hours per year by the end of 2022. when it becomes thousand kilowatt—hours a year, in the uk you're looking at about 21p per kilowatt hour. that amount of energy will be locked in at that 2ip for 20 years and after that, it's free, obviously. let's be clear, one of these isn't enough to power a home. even one that uses gas or oil for heating. in theory, you would need at least one for every bedroom you have. and if you don't have an expensive battery to store any surplus energy as it is captured, you end up feeding it back to the grid for a fraction of the market price. one alternative is you can plug the arc directly into your electric car if you have one. i've found another solar entrepreneur in london's notting hill. this prototype features a unique cost—effective way to attach solar film to regular blinds so owners of flats and garages can take advantage, too. because to date solar power has been for the rich, and it has not been, there has not been a system or product in place where it can go on any building. my company's aim is all around the democratisation of solar so any window can now become a solar panel. david has applied for a patent for his creation and will take it first to spain where these types of blinds are more common. installations begin later this year. and he's also in talks with a london authority which wants to fit them to council flats. so, for this size of window, it would generate around 10%, 15% of your energy needs, and this is a three bedroom house. so between a hot summer or a cool winter, the amount of energy you could generate would be probably about 10, 15% less during winter compared to summer. so not much difference? not that much, no. and with this new solar film, it generates energy in cloudier climates compared to silicon panels. another good thing about solar film is that it's scalable. some places have more roof space than others, of course. so for reasons of cost savings as well as the environment, this rugby stadium has decided now is the time to cover its stands in the new, lightweight solar film. there's an estimated 2.5 billion square metres of south—facing commercial roof space in the uk. and a lot of it wouldn't have enough strength to support weighty, traditional solar panels. so the panels, we will pay 15p per kilowatt hour. that is half or less than half of what the current cost of electricity is so that is a significant saving for us. if you've got a big roof or big area of land, i don't know why you wouldn't consider this as a viable option. i mean, you know, it uses an asset you cannot really use for any other purpose. it saves you money. and it's good for the planet. increasingly, these new types of flexible solar panels are making solar more accessible for people. the don't replace traditional panels, which will be ideal for some. and there are other options like solar tiles out there, too. but solarfilm is now getting more efficient, and importantly, cheaper. just as grid prices are going through the roof. so both practically and financially now, solar could be coming home. we know that fashion can hurt the earth. its production makes up 10% of carbon emissions, drives of water sources and drives of water sources and pollute rivers and streams, but all products, whether they come from farms, labs factories take their toll with hidden impacts and materials, manufacturing and more. frankly, even the best of intentions it can be really hard to know which items that you want to buy are better for the planet. take these two shirts for example, they look similar. this one might be made with more sustainable materials but it was flown halfway around the world to get you, and this was made locally, which one do you choose? wouldn't it be nice if you could maybe scan the products to see what's good and what's bad? here in the netherlands, one company is trying to make the environmental impact of products more transparent. the idea is that you scan the qr code attached to the product and you get a score out of 100. this shirt here, 66/100, 0k. this shirt over here, which does look pretty much the same, 70/100. 0k, slightly better, i'll have that one. dayrize�*s co—founder, austin sims, explains that this one score actually consists of five subscores, assessing things like carbon emissions, materials and recyclability, and also the impact on the people creating it. 68/100 for your lavender and ylang wax melts. how necessary a product actually is also gets a score. what is an example of a product that has no purpose? a product that scores low on purpose would be like an electric pepper grinder. 500 fashion, home and beauty brands have already been signed up, and this system actually lends itself to online shopping, where scores can be easily displayed next to the products. the idea is that anything and everything could eventually have this standardised label. now, there is already an industry standard for working out environmental impacts — it's called a life—cycle assessment. but this requires brands to dig deep into their data — a lengthy, expensive process that few companies bother to do. no brand has all the information that we need to actually understand the impact of the product. if you're missing information about certain areas of your sourcing or manufacturing or distribution, we call upon 31 different databases. eventually, dayrize will have one big database of the environmental impacts of all parts of the production process, with al being used to estimate any unknowns. and this will bring calculation times down from months to minutes. if you come in with your t—shirt and say it was made of organic cotton that was produced in sri lanka, and then we knew where it was produced and we knew where it went to be actually manufactured, and where it went to to be sold, that is enough for us to fill in the blanks. so it sounds like there is a little bit of guesswork. because if you don't know exactly how i have shipped my cotton from a to b, i could be doing it in a great way or i could be doing it in a not great way. it actually then searches for the information itself and builds on itself and gets smarter over time. we've already scored tens of thousands of products to see that the machine is working really well. if we don't have that information from the algorithm we can pull on the industry average, so you still get that really accurate score. dayrize says it can produce results that are 80% accurate, and a future where it could devise a score without any information, or even consent from brands, could be just years away. a detailed breakdown of harm could even help the worst offenders to improve. the wool is actually quite high in impact, so you can look at either different materials or different areas we can source that wool from. so by plane, by truck, by ship, actually has different impacts. so you can see if there is a lot of impact from travelling by train, so you can try and do that a different way. so what you're doing is quite clever because instead ofjust effectively possibly naming and shaming brands which don't do very well, you're providing them with lots of information. it's a consultative service, so we actually try and show the brands what are things they can do. the deal would be that a brand has to display all five of its scores, rather than just cherry picking the one that highlights their strengths. but opinion on what's most important will vary between customers, and also the science behind the scores will evolve too, meaning a product's score might suddenly change as sentiment shifts. 0ne benefit of this might be that brands start competing with each other to get better circularity scores, better livelihood and wellbeing scores. that's the aim, i think it creates that healthy level of competition that we want. so there you go, lara, in the future you could know exactly how green your entire outfit was. i don't actually have to wear green, though, do i? no, no — you keep rocking the blue and i will keep rocking the grey — in more ways than one. meanwhile, here's a way that you can make your gadgets greener by using sustainable energy, something this solar cell factory in sweden is taking to the next level. this machine is printing custom nano—ink onto solar panels, and they don't even need the sun to charge. we have developed our own nano inks, and in this machine we will print that ink on the proprietary substrate. how is the end result and the usage of it different to other solar cells? it actually harvests all kinds of light. it's sort of like artificial photosynthesis so we work under any light conditions, led, normal light bulbs, even in the shade. any kind of light. you're sort of using electricity but i guess its electricity that's being used anyway? we're recycling light. the extra efficiency means that those silver strips that usually run through solar panels are no longer needed, freeing up new design ideas. this allows us to have free form printing. printed in the shape of a circle or a triangle. these cells have been shaped to fit a headphone band and this robot is responsible for squirting electrolytes on them to allow conduction. it looks like it's going to drip bits in between. but it's actually doing very precisely? it's more efficient and predictable and for sure doesn't make any mistakes. the final step is lamination to give the cells custom textures. and into the press it goes. and here's the finished product. a1 .3 millimetres thick solar cell. giovanni, tell me about the prototypes you've got here? what you see here is a fully self—powered, sustainable powered headphone. it has a leather structure to it. and it will actually absorb any kind of light and convert that light into electric energy and charge the battery. if you go to the office, if you sit in your office working. if you go to the gym, whatever you do, they will always charge during the day. but the luxury of not needing conventional charging will add a chunky $50 to devices, several of which have already been created. this is a self powered speaker. if you look at the back side here, it is a solar cell. a smart helmet can sense when it is being worn in the dark and light up automatically. here are the charging panels. one, two, three. it's actually one cell underneath. they really blend in. and this bag doubles up as a power bank. this is a pretty big surface and you can place this in the sun so it will charge a lot. charging from ambient light does have its limitations, though. how about a laptop, how far away are you from being able to create that sort of power in the bag? the laptop you know is super power hungry. and a phone as well, you're just not going to get enough power? laptops and phones, you need much stronger light, or you need a larger surface. but who is going to walk around with this? it's not going to happen. so it's all about finding the balance. what is the available surface on the product, how do you normally use the product in your daily life. the company also thinks that an app will help users develop better charging habits by making everyone more light conscious, as they put it. in your phone, you will see how much it charges and how much it drains all the time. you will be able to track how you're doing, and it came a it. i'm told this tech will never be put directly on smartphones, because leaving your smartphone out in the sunshine will never be a great idea. but this could be a step up from wireless charging for many other devices. products like these urbanista headphones do still have a back—up charging port, though, for those who just still want it there for peace of mind. that was lara, hoping to power up with or without a bit of sunshine. talking of which, it was the sun and sunlight which gave the visual effects team behind the movie dune a bit of a headache. their brief was to recreate a harsh desert planet full of sandworms and flying ships, all the while making it look realistic and grounded. here's a look at some of the amazing work that went into the film. go, go, go! i knew they were going to try and ground it in reality, as much as possible in a science fiction movie, but try and have it in a way as if you were filming it as if it was for real, so it's not visual effects for visual effects�* sake, but visual effects to help tell the story and move the story along. that's the type of work i quite enjoy doing. i knew it would be a lot of preservation needed, but for example sand dunes were shot with a real camera, i knew that we then needed to match that completely digitally, to be able to put a sandworm, in this example, put a sandworm through those dunes as well. so i knew it was going to be as photoreal as we could get it. it started almost from day one, it's like 0k, sand — sand and the worm, and how do we make this happen and make it look 100% photoreal, but also be able to iterate and see different versions and render it, and have it to the level that imax shows? one of the biggest challenges we had, sticking with sand for a minute, was the issue of scale. in the deserts of arrakis, there's no vegetation, so we didn't have bushes, no scale references for the eye to look at and know how big things were. which is good and bad — it meant that we had to have almost a full simulation of all the different grains of sand in there to make that work. so early tests we did with the sand grains were just too big, the worm suddenly looked really small, it didn't feel as imposing and as massive as it needed to be. so the effects team had to come up with different ways of working with that — obviously you can't simulate every single grain of sand in the desert, that is just not possible. so they came up with systems where you can have a representation of what it's likely to look like, and they had several systems that would call from a library of different setups that they had, to then populate some of the areas around the worms to get that feeling of, yes, this is the desert, and it is being shifted around, and those sand grains are tiny. and from those simulations we had dust coming off of that which helped with the scale as well, and shifting sands, for some of the dunes a little further out from where the worm is, because as the worm moves through the ground it is sending out vibrations and shifting sands to the left and right and in front of it as it moves. they actually built a lot of the sets, or partial sets, and so we had real ornithopters on the set which were pulled up by cranes, and we had helicopters landing to kick up the dust so we could use it as reference to replicate. there was a lot of blood, sweat and tears and love in that movie, you know — it was a very special project that everybody wanted to be there and do their best, and then some, and so you see that on the screen, a lot of that love for dune is up there. the test is simple. remove your hand from the box... ..and you die. what's in the box? pain. that's it for 0scar—worthy films and for click for this week. as ever, you can keep up with the team on social media. find us on youtube, instagram, facebook and twitter at @bbcclick. thanks for watching, goodbye. hello there. a change of fortunes for many today, but not for all. i have managed to find a few glimpses of sunshine. not a bad start in parts of the highlands of scotland, particularly in comparison to saturday where we had an inch of rain falling in one or two areas, but most of us have been waking up to skies like this. so for the remainder of the day we keep quite a lot of low, grey cloud and at times we'll see some outbreaks of rain as this area of low pressure continues to push its way steadily southwards, squeezing the high out of the way. so the rain so far has been moving out of scotland and northern ireland into the north—west of england and parts of wales. it is starting to weaken a little as it bumps into that high pressure, so we will see some showery outbreaks of rain for central and southern england, buta rather grey, gloomy, damp affairfollowing on behind for wales and through the irish sea. the best of the breaks in the cloud, the best of the glimpses of sunshine looks likely to continue to be the further north and west, with highs of 16 or 17 degrees. now, as we move through sunday evening, that rain still yet to clear. it will do so, leaving a legacy of cloud in its wake. the cloud preventing the temperatures from falling away, so that means there will be a relatively mild start to our bank holiday monday with temperatures holding up — 7—10 degrees. but a rather grey and gloomy start to bank holiday monday as well. now, there will be a good deal of drier weather in the forecast over the next couple of days. still the risk of a few isolated showers down through the borders, across the pennines as well. hopefully, the cloud will break in places, allowing glimpses of sunshine, so in the south we could see highs of 17 degrees, but a brisk northerly breeze in scotland willjust take the edge off the temperatures here in the far north and east — 7—11 celsius the high. as we move out of monday into tuesday and wednesday, we've got a series of weather fronts that's just going to enhance some shower activity. some of them possibly heavy and thundery, but then behind those fronts an area of high pressure building. it is the azores high so, with the wind direction swinging in a clockwise direction, that means the warmer south—westerly flow is set to return, the air coming all the way up from western africa, so a slight dip in the feel of the weather and maybe some sharp thundery downpours, but then, towards the end of the week, getting noticeably warmer and drier. good afternoon. it's believed that dozens of civilians have been released from a steel plant in the besieged ukrainian city

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