this is bbc news. the headlines — the united nations climate summit cop27 has ended with a landmark deal for developing countries. negotiators in egypt agreed to set up a fund to help poorer nations deal with damage caused by climate change. but there's disappointment that there was no commitment to further cuts in greenhouse gases. the football world cup in qatar has kicked off with a lavish opening ceremony, and a humbling defeat for the hosts — losing 2—0 to ecuador in theirfirst game. world leaders attended the opening event, which featured an appearance by actor morgan freeman. vigils have been held forfive people killed in a shooting outside a gay nightclub in the us state of colorado. 25 people were injured.

survivors have been speaking of how they took shelter and hid from the gunman. a 22—year—old suspect was arrested at the scene. now on bbc news, click. as cop27 winds up in egypt, this week we will look at some of the latest tech that is trying to clean up our planet. we will muster up a mass of moss that is mopping up the mess in the air. that's easy for you to say. we will find out if hydrogen can do the heavy lifting. and check out our latest merch.

and if you don't like the band, don't worry, the logo comes back off. once again, the leaders of the world have been coming together in an effort to fight climate change. as cop27 comes to a close in egypt, campaigners and climate scientists are wanting some key commitments aimed at securing the future of the planet are at risk. in the years since cop26 happened here in glasgow, there has been a lot of criticism that the event was all talk and no action. change is not going to come from inside there, that is not leadership. this is leadership. these un climate summit bring together thousands of delegates from government, science and pressure groups from around the world. the aim is to provide the support for all countries to be able to their carbon emissions, and deal with any issues that climate change will inevitably cause. the world is warming because of emissions produced by burning fossilfuels like oil, gas and coal.

yep, global temperatures are heading towards 1.5 celsius above pre—industrial levels, and if they go to 1.8 celsius, scientists want that half the world's population could be exposed to life—threatening heat and humidity. climate scientists have warned that change needs to come from the top, from governments and companies. once science and innovation will play an important part. yeah, so this week we're going to look at some of the latest green ideas. and first off... take a deep breath. breathes. if you live in the green, it is easy to forget what life is like in the grey. the air literally can smell sweeter, and it is definitely cleaner. the world health organization says our pollution poses a major threat to health and climate, and it kills an estimated 7 million people worldwide every year.

now we are not all going to move back to nature, but what if we could bring nature into the cities? just outside berlin, this company is trying to freshen up our urban air. this is a biofilter, which is sucking air in through the bottom and pumping it back out through this wall of moss. to illustrate that, we have got a smoke machine from the local discotheque and if ijust show you, there you go, it going in through the bottom and out through the moss. and what happens to the air as it comes back out through the moss is where the magic happens. moss eats pollution. it sticks to its tiny leaves, it is absorbed, digestive it sticks to its tiny leaves, it is absorbed, digested and then is turned into more moss. so, as fans draw dirty air in, the bad stuff is left on the moss�*s leaves, leaving

cleaner air to flow back out. the idea of using moss�*s naturalfiltering properties came to the founder after he went for a jog. i was in shanghai and did a lot of exercise outdoors to get in shape, i would go for a run and after i think two or three months i started to have difficulty breathing. and that is when i thought maybe i caught the flu, maybe i caught a cold, and it kept on lasting until the point i really left china, left shanghai and went back to germany. and only after i came back i realised, heh, there is definitely a connection to the air quality in china and my personal health. that is when it clicked and i realise i have to do something about the air quality in cities. for the past eight years, green city solutions have been growing moss up to five times faster than nature. each moss mat takes just under 12 weeks to grow, and i have to say there is something very soothing

about being in their greenhouse. do you just come in here and stroke the moss? laughs. when i am stressed! laughs. the thing about moss is this plant doesn't have roots, so it can capture nutrients through the leaves, or the leaves�* surface. so you can imagine other plants, it takes the nutrients from the earth, but this moss, can capture everything. the second thing is, like every plant, moss can absorb co2 because it needs for photosynthesis for the energy, but the density of the moss is pretty high so we need a high surface area to capture as much as possible. now we're going to take a sample. i can do it? for sure. ok, let's tweeze some moss. i've got some. perfect. now we can have a look under the microscope. there we go. and it is in the lab

where we will get to see moss�*s superpower. the plant acts a lot like a human lung, whose high surface area can absorb a lot of the one go. and just like the lungs of a smoker, which end up getting blackened by tar, moss could act like the lungs of a city, eventually being covered in the stuff that we don't want to breathe. this is from one of our active products. and the black bits are the... exactly. this is the fine dust of particles from polluted air. and these are the green cells and it means that the moss is still healthy because it is green. they are pretty powerful, really. moss fan. yeah, iam, somehow! laughs. as well as pulling pollutants out of the air, there is another advantage to these biofilters as well.

here is a piece of moss and here is a thermal imaging camera and you can see the temperature is about room temperature. but when i point this at the air that is coming out of the moss when you switch the ventilation on, look how much cooler it is. so not only does this clean the air, it cools it as well. and of course, pulling pollutants out of the atmosphere could help cool more than just your local surroundings. air pollution and climate change are also directly related. you have pollutants in air pollution, for example black carbon, which speed up the heating of the planet. and by binding those pollutants, we also help to decelerate climate change. you will already see these biofilters in several cities around the world. although you might not have realised that you are sitting in front of a load of moss. and to make sure the moss is as effective and long—lived as possible, the health of each moss map can be monitored from ho. an algorithm can control irrigation based on the conditions.

in the future i would envision that many buildings and the facades of the buildings would be covered in our solutions, and of course you could also have motorways, large stretches, you could use our moss filters to clean and caught the air and it may be protected from noise. moss on its own won't solve the climate crisis, but in among the talk of inventing greener technologies, it may be worth taking a leaf from someone that has been right under our feet the whole time. after all, nature has been regulating the environment for much longer than we have been disrupting it. moss, who would have thought it could be so useful, the lungs of a city! nature's natural filter. as companies try to reduce their carbon footprint and their impact on the climate, there are lots of different things they could try. you could change your manufacturing process, how you transport goods or even move factories, but all of these

are big things to do. so you really need to know which is going to work best. how do you do it? answer, get yourself a digital twin. you make a virtual copy of your entire business and try stuff out in that first. alisdair keane has been to see the makers of dettol who are trying to assess whether they can make their new products more sustainable or not. we use these products every day, from cleaning tabletops to personal hygiene and health. these brands are made by one company, called reckitt, and the industry to get them from factories to our homes is fast moving and comes with a big impact on the planet. not huge, but important that we look at that carbon footprint and think how we will reduce and decarbonise it. the product carbon footprint, that's everything from raw materials all the way through to people using products, has to come down by 50% by 2030. that is a longer process, that is where we have to think not just about our factories

but the ingredients we use, the packaging we use. to work out how they can make targets, the company is turning to a digital replica of everything they do through a programme called risilience. this is it, this is the digital twin, this is risilience? this is risilience's version of different companies. we map them as a digital twin. we are looking at the data from a pretend company, but the programme is bringing together lots of information such as the miles that individual ingredients are shipped, or how much energy each factory uses. it then run lots of scenarios over the company to see how sustainable it is and in the future. we have a large team of analysts who compile a lot of data, forecast out into the future, look at how policies are likely to change in different countries of the world, how taxes are likely to change. the digital twin is also helping firms map the impact

climate change is already having on their operations. this is an example of its factories in the united states, and how they might be subject to future patterns of hurricane risk. of hurricane risk. and we look at how often it is going to get disrupted, the cost to the business of that particular thing. and then a company can start to make changes in the lavatories here, they can work on a new product, put it into the programme and find out if it will make a difference? exactly. so that is where we are heading next, safety goggles on as i have been given rare access to the room where the next big thing in cleaning should be on the verge of discovery. and where they are also adjusting existing product lines. we changed one of the agents that now use lactic acid, is plant basil has a lower carbon footprint. so we looked up what risilience was telling us about where our

carbon footprints and may be carbon tax in the future will affect us, and we thought, what are the ingredients we can change? and by moving to lower carbon ingredients, things like lactic acid which is developed from fermenting maize we were able to reduce the carbon footprint, and that means it is set up for the future, low carbon, low—water economy. reckitt are not the only ones turning to this tech. there are estimates the market for digital twins could be worth billions of dollars over the next decade. but having all the data on sustainability is one thing — companies need to act on it stop i think when a lot of people think about big companies on sustainability, they probably roll their eyes, because big companies are out to make money. what is the balance that between being more sustainable and still bringing townsend? the key here is how we can decarbonise and still grow. if we can achieve our ambition to be net zero by 2040, we can grow as well and that d couples those two topics. it could be years before we know if decisions companies are making now will really help the planet. this taker is making that a little bit less of a gamble. that was alisdair, and now it is time for a look at this

week's tech news. google has agreed to pay nearly $400 million to settle a privacy case. it had been accused by a0 american states of misleading users into believing location tracking was switched off. the search engine says the claim was based on policies that changed years ago. ride—hailing app uber says it expects people to keep using it, even as their budgets get squeezed. the firm is branching out to let users book trains and buses in the app. it also told the bbc more drivers have joined them. for uber, potentially we can serve those needs of those customers who decide to no longer have their own car but use uber instead. and actually in tough economic times, to me that makes total sense.

meanwhile, food delivery app deliveroo says it is quitting australia because of tough economic conditions. the country's government has been putting pressure on companies to improve gig workers�* conditions. and... animal crossing's first e—cycling centre! and in a bid to help people reduce e—waste, intel has created a land in the game animal crossing to help educate us on how to recycle old tech. the firm says electronic waste is rising three times faster than the world's population. the steam train, first built in 180a. it made real travel cheap, and suddenly everything seemed much closer to home. industry rolled on and by the 1960s, electric and diesel trains had replaced steam. and today around the world, most high—speed trains are powered by electricity.

at the historic bo�*ness and kinneil railway, engineers have also moved on from the past and into technologies of the future, where they are working towards cleaner rail travel. and this? this is the little train that could be powered by hydrogen. the train itself is not new. instead, this is where old technology meets new and a test of where hydrogen power might be a viable option on our railways. the technology beneath my feet is relatively new for the railway but one of the interesting things about this project is that this train is actually quite old — built in 1979 — and it has been retrofitted to run on hydrogen. so, what was a class 314 headed for the scrapheap is now a class 614 hydrogen—powered train. the hydrogen is stored in tanks underneath the carriages, along with the hydrogen fuel cell, which converts the hydrogen

back to electricity, which powers the train. all that is emitted is steam and water. the hydrogen needed to power the train is made on site. electricity from renewable sources is used to split water, creating hydrogen. that is then compressed, compressed again, and then stored, ready for refuelling the train. but if most of the uk rail network is electrified, what part will hydrogen play? some commentators say that hydrogen is actually a bit of a distraction — what we should be focusing on is fully electrifying our railway lines. so, if you've got a route where you can't do overheard electrification and the route is too long or too demanding or there isn't a time to charge or the infrastructure to charge to run a battery train, then the hydrogen train fills that gap. you can get a range approaching diesel, you can refuel very

quickly and you can transport hydrogen in multiple ways, so the hydrogen train fulfils some operational requirements you can't meet with other approaches. it's not the only area of transport looking to use this element. aberdeen is a city built on oil and gas but it's now home to the first hydrogen—powered double—decker buses in the world. so, how does this work? what we have... watch your head. in total, holding 25kg of hydrogen. they will pump the hydrogen down to the fuel cell, down here. it mixes with fresh air, and in the process, what we end up with is getting electricity that comes out. this electricity gets sent to a battery and from the battery, then goes to a battery controller — just the same as an electric vehicle. to get these clean and green buses from a to b, hydrogen refuelling stations were set up around aberdeen. it's just like filling the bus with diesel. instead, the pumps are stocked with hydrogen. when do you think diesel

is consigned to the carriages —— the garages of history, and the majority of your fleet are running on renewable products? five, ten years. definitely, i think it's — i mean, certainly, for us as a group, we will not be buying any more diesel buses in the future. it will be electric or gas or hydrogen buses. ding! thank you, driver. thank you! but it is notjust buses looking to hydrogen as a fuel of the future. this is the first of its kind zero—emission hydrogen—electric hgv, which runs off renewable electricity. and, like the hydrogen buses, water is its only waste. in the hgv sector, we're seeing that hydrogen is the only technology that's able to give the long range, the heavy payloads and the quick refuelling time. if you think about what we currently do, which is drive around with flammable liquid in our cars, with small explosions going on around our knees and a tank of flammable

liquid behind us, hydrogen is safer because these tanks a very solid. —— are very solid. they've got triple—layer carbon—fibre reinforced. so, there's a place for hydrogen in transport. if we continue at our current rate, scientists estimate our fossil fuels will be burnt out by 2060. we know the way we travel must change and we can no longer rely on non—renewable energy sources to fuel our way of life. with hydrogen and electric—hybrid set to be the future, clean solutions are here to stay. that was laura... in my coat! yeah, i noticed that, actually. have we got a uniform now? did i miss a memo? yep, that's right. anyway, talking of coats — or, more generally, clothing — we talked in the past about the problems with fast fashion. these are clothes that are so cheap, they kind of feel disposable. we've seen in new ways of being able to recycle fabrics, but this week we're taking a look

at a problem that i, for one, did not even know existed but luckily, shiona mccallum's found the solution. we know that fashion hurts the earth. more than 92 million tons of textile waste is created every year. recycling is possible, but chemical dyes and prints often prevent this. if you're anything like me and buy merch every time you go to a gig, then you may have loads of band t—shirts. but sometimes, your musical tastes do change and you're stuck with these logos forever. well, one team here in gothenburg are trying to change that. the idea is that they print the t—shirts, strip them back and reprint them, so they can be used again, again and again. the start—up, called vividye, is not changing traditional fabric inks... i will get you a lab coat. ..instead, it's developed an invisible layer that goes onto the fabric first...

voila! ..made from entirely earth—friendly ingredients. this can be dissolved away later, allowing the top design to be removed. what is the cool tech that goes into creating this perfect recipe? it is all about a balance and trying to find the sweet spot for both the functionality but as well the stability. then, we look into the viscosity of it. we look at the chart of our components. we study the films that we create through microscope, as well as the textiles that we are applying the print to. is there any waste products at all here? when we want to try something, we create the volume necessary for what we're trying. the mix is applied as an industrial partner, where it is easily brought into the screenprinting process. hi! johanna. welcome! welcome to sweden and gothenburg. thank you so much. so, i think you have a surprise in store for me? yes, i do. today we're actually going to print a click band t—shirt. exciting.

i'm really looking forward to seeing how it all works. let's get started. happy quirky music plays. the final result is here. i love it. how could i ever want this to be removed? use it as long as possible and then remove it. just for you guys, i'm going to take this t—shirt back to the lab and see if the technology can completely remove the logo. right now, this means putting the t—shirt in a bowl with a removable chemical. it's then treated at high temperatures and left for about an hour. afterwards, there is a secret technique in getting the print to physically come off, and this should get better as the recipe and the process is fine—tuned. so, yeah, just seeing we have some traces left. so, the click band logo has

gone and i can only see a few speckles of pink — pretty good job. yeah, i mean, i reckon you could print on top of that and you would not notice. no. and this would be good for recycling, would it? this is definitely good for recycling. which is the main point — so it won't end up in landfill, along with traditionally inked—up garments. and another test, processed more precisely without the delays of us messing about filming, has come up even cleaner. you can get it more or less completely off. we are sure 100% sure about that, yeah. but wearers are not expected to strip the tees at home. the printing companies use our technology. people get to use the print and the textile and then, we take it back. with several large european partners already developing their own garments, there is clearly an appetite for closing this circle. with more than 100 billion items made each year, it's never been more important

to make all textiles recyclable — and i did keep one of these just for my next gig, though. shiona there, and that's it for this look at some of the latest innovations that are hoping to tackle climate change. yeah, it's going to take much more than those to make a dent on rising global temperatures, but whenever we see something that we think is promising, we'll make sure that you see it too. thanks for watching. we will see you soon. bye— bye. hello there. over the next few hours, we're going to see some frost and fog forming. it is going to be a chilly start to our monday morning. some of that will be

slow to lift away. and then, as we go through the day, some wet and windy weather will start to dominate from the south—west. but temperatures could be as low as minus four or minus five degrees in a few spots first thing this morning. the wet weather, though, starting to show its hand and that will gradually drift its way north and east as we go through the day, not really getting into northern england and scotland, however. gusts of winds in excess of 70 to 80 miles an hour first thing, so a very stormy start to the day in the south—west. some of that rain really torrential as it pushes its way steadily north—east, moving into northern ireland, across parts of wales, the midlands, eventually into south east england and east anglia as we go through the afternoon. that means northern england and the bulk of scotland after that cold, frosty and foggy start will see some sunshine coming through. a few isolated showers and where it's cool to higher ground, some of these could be wintry in flavour. six or seven degrees the high here, top temperatures of 11 celsius perhaps, but it looks likely that we see the cooler air clinging onto the far

north of scotland. further south, we'll see a few weak weather fronts and producing some milder, showery weather first thing on tuesday morning. the showers in the north of scotland still have the tendency perhaps to be of rain, sleet and snow. elsewhere on tuesday, not a bad day — dry with some sunshine coming through, a few scattered showers, temperatures around six to 11 celsius, so on the cool side, really. now, as we move out of tuesday into wednesday, the next batch of wet and windy weather starts to push in from the atlantic, the isobars once again squeezing together, and the rain could be quite heavy at times. this time, it is going to push its way into the north of england and across to scotland, so there will be some more rain potentially for the north—east of scotland, maybe some snow to higher ground here. behind it, we'll see sunny spells and a few scattered showers being driven on along those west coasts. again, those temperatures around nine to 12 celsius. it looks likely that we will see slightly drier weather thursday into friday before more wet and windy weather returns into the weekend.

this is bbc news. welcome, if you're watching here in the uk, or around the globe. i'm anjana gadgil. our top stories — a landmark deal for developing countries at the cop27 climate summit — but little progress on cutting emissions. the deal on loss and damage is really a breakthrough but there is huge disappointment in this room, disappointment that the rest of the text is not more ambitious. the world cup kicks off with a lavish opening ceremony in doha, after months of criticism and controversy, but the host nation qatar is beaten by ecuador in its opening game. vigils are held for five people, killed in a shooting outside a gay nightclub in the us state of colorado. survivors speak of how they hid from the gunman.