this is bbc news. the headlines: crowds have cheered ukrainian troops as they entered kherson after russia's retreat. the city had been occupied by russia since march. it's been hailed as an historic day by the ukrainian president, volodymyr zelensky. thousands of russian troops have retreated across the dnipro river. president biden has told the cop27 climate summit that he wants to re—establish the us as a reliable global leader on tackling climate change. he said he's committed to the target of halving us carbon emissions by 2030 and apologised for donald trump pulling out of the paris climate accord. a ship with 230 migrants on board, which was refused entry to italy, has docked in france as a row between the two countries deepens. giorgia meloni, the new italian prime minister, has criticised france over the handling of the migrant rescue ship, the ocean viking. now on bbc news, click.

this week, fighting cancer with sound. ~ ., ., .,~ ., sound. will mastodon make a dinosaur out _ sound. will mastodon make a dinosaur out of _ sound. will mastodon make a dinosaur out of twitter? - sound. will mastodon make a dinosaur out of twitter? not i sound. will mastodon make a | dinosaur out of twitter? not if elon musk _ dinosaur out of twitter? not if elon musk has _ dinosaur out of twitter? not if elon musk has anything - dinosaur out of twitter? not if elon musk has anything to - dinosaur out of twitter? not if elon musk has anything to do| elon musk has anything to do with it, i would imagine. elon musk has anything to do with it, iwould imagine. with it, i would imagine. what is the blueprint _ with it, i would imagine. what is the blueprint for _ with it, i would imagine. what is the blueprint for a - with it, i would imagine. what is the blueprint for a green - is the blueprint for a green workspace? we will ask his architect, niklas zennstrom. the man behind skype? and fancy a dance? at the club that is powered by body heat. goodbye

then. we powered by body heat. goodbye then- we are — powered by body heat. goodbye then. we are in _ powered by body heat. goodbye then. we are in the _ powered by body heat. goodbye then. we are in the midst - powered by body heat. goodbye then. we are in the midst of - powered by body heat. goodbye then. we are in the midst of an | then. we are in the midst of an energy crisis. and office buildings are notoriously power hungry beasts. plus, in the post— covid world, there is often fewer people actually using them. often fewer people actually using them-— often fewer people actually using them. the great thing about smart _ using them. the great thing about smart buildings - using them. the great thing about smart buildings is - using them. the great thing | about smart buildings is they can have energy efficiency built—in from the ground up. literally. but how about all of those existing buildings, the ones that are climate controlled but not climate minded?— controlled but not climate minded? �* ._, ., . minded? we've come to atomic house in london, _ minded? we've come to atomic house in london, and _ minded? we've come to atomic house in london, and office - house in london, and office building which has been given a new agreement lease of life —— atomico. this building has had an official net zero refurbishment and all of the furniture is either sustainably sourced, vintage or recycled. the floors are made from recycled wood and clay cluster while no fossil fuels are used to the heat hot water. —— clay plaster. to the heat hot water. -- clay laster. ., ., , plaster. even the food is friendly. _ plaster. even the food is friendly, these - plaster. even the food is friendly, these guys - plaster. even the food is

friendly, these guys are | plaster. even the food is - friendly, these guys are using is locally sourced ingredients as possible, they never cook with red meat and they have left over fridays which means they don't need to throw much away at the end of the week and for your information, it smells gorgeous! we will explore more of the building's secrets and meet demand behind it, you may recognise, a bit later. but first, recognise, a bit later. but first. have _ recognise, a bit later. but first, have a _ recognise, a bit later. but first, have a listen - recognise, a bit later. but first, have a listen to - recognise, a bit later. pm first, have a listen to this. believe it or not, it's a sound that can destroyed cancer. human trials in the uk and us can currently assess how safe and effective the treatment is for liver cancer but interestingly researchers have now found that histotripsy can, in some cases, kick—start and immune response which means the body can start fighting the disease on the phone. yasmin morgan—griffiths has been following one cancer patient on his histotripsyjourney. peter is a guinness world record holding skateboarder but he had to retire from competing when

he was diagnosed with neuroendocrine cancer three years ago. it can affect cells in several organs of the body, including the liver. it in several organs of the body, including the liver.— including the liver. it turns our including the liver. it turns your life — including the liver. it turns your life into _ including the liver. it turns your life into a _ your life into a roller—coasters, just absolutely terrifying. you don't know how long you've got whatsoever.— whatsoever. peter's liver tumours _ whatsoever. peter's liver tumours are _ whatsoever. peter's liver tumours are so - whatsoever. peter's liver tumours are so small - whatsoever. peter's liver| tumours are so small and widespread, cannot be removed through surgery. he had several rams of radiation therapy and chemotherapy but these took a heavy toll on him.— heavy toll on him. fatigue, ener: heavy toll on him. fatigue, energy levels, _ heavy toll on him. fatigue, energy levels, really - heavy toll on him. fatigue, | energy levels, really heavily hit, they basically said i was not responding to the chemo. but then, peter was offered the chance to undergo a new cancer treatment at st james as hospital in leeds. histotripsy is a type of focused ultrasound which destroys tissue inside the body, completely noninvasively. it's much more precise than treatments which use heat or radiation, meaning it can better treat tumours which are small and widespread in vital organs like the liver.

us —based tech company history sonics is running the most advanced histotripsy trial to date. ., , advanced histotripsy trial to date. . , ., ., date. there are tiny and that made size — date. there are tiny and that made size bubbles _ date. there are tiny and that made size bubbles that -- l date. there are tiny and that. made size bubbles that -- exist made size bubbles that —— exist within tissue and when we hit those focus points without ultrasound, it excites those bubbles and those bubbles expand and collapse and mechanically destroy tissue in patients for the procedure and generally, they are awake and they do not know if they were ever treated.— they do not know if they were ever treated. the team is going to be using _ ever treated. the team is going to be using standard _ ever treated. the team is going j to be using standard ultrasound to be using standard ultrasound to identify where in peter's body the tumour is. then they will use this robotic arm to deliver a much stronger therapeutic type of ultrasound to destroy it. histrosonics's technology is focused on the liver because tumours there are notoriously hard to treat and survival rates are low. the hope is histotripsy will inoperable patients like peter to treatment options. it sounded amazing, really. at the

time, my alternative was basically to go to a stronger, heavier chemo and i was hoping not to have to do that. this is quite an opportunity.- quite an opportunity. leeds teachin: quite an opportunity. leeds teaching hospital's - quite an opportunity. leeds teaching hospital's nhs - quite an opportunity. leeds i teaching hospital's nhs trust is one of 16 centres in the us and europe taking part in the global hope liver trial. its aim is to find out how safe and effective the treatment is. just 46 people worldwide have received the procedure so far. including peter. indie received the procedure so far. including peter.— including peter. we are about to start the — including peter. we are about to start the treatment - including peter. we are about to start the treatment here. l to start the treatment here. this professor is overseeing his treatment. in this professor is overseeing his treatment.— this professor is overseeing his treatment. in the middle, next, his treatment. in the middle, next. see _ his treatment. in the middle, next, see the _ his treatment. in the middle, next, see the bubbles? - his treatment. in the middle, | next, see the bubbles? that's the focal point of the treatment. you can hear the sound. treatment. you can hear the sound, treatment. you can hear the sound. , , , treatment. you can hear the sound. , , sound. so, can you see bits of the tumour— sound. so, can you see bits of the tumour being _ sound. so, can you see bits of the tumour being destroyed i the tumour being destroyed right now?— right now? you can see the focal point _ right now? you can see the focal point is _ right now? you can see the focal point is destroying - right now? you can see the focal point is destroying a l focal point is destroying a tumour and as you can see the bright area here.— bright area here. early studies have shown — bright area here. early studies have shown histotripsy - bright area here. early studies have shown histotripsy can - bright area here. early studiesl have shown histotripsy can also kick—start and immune response that enables the body to fight cancer on its own. this is what

tumour cells in rodents look like before histotripsy. but look at them after. the changing colour shows the immune system has been stimulated to destroy tumour cells. the hopeful liver trial is investigating how and why histotripsy triggers this response and how reliably it can be seen in humans. two out of eight patients in a small initial study had this effect. that is, yeah, what i'm really hoping for is that you get the immune response and it starts to clear up all of the things in the liver.— in the liver. cancer expert take histotripsy _ in the liver. cancer expert take histotripsy could - in the liver. cancer expert take histotripsy could be l in the liver. cancer expert| take histotripsy could be a significant breakthrough. would be potentially — significant breakthrough. would be potentially game _ significant breakthrough. would be potentially game changing i be potentially game changing for a lot of cancer patients. you don't need an invasive treatment of the toxic drugs that we may use a standard chemotherapy so you could have an example where you use histotripsy to stimulate the immune system and then you come in with the immune activating drugs and they might be able to then finish off the tumour. but there are _ then finish off the tumour. but there are some _ then finish off the tumour. but there are some concerns. it. then finish off the tumour. but i there are some concerns. it may release bits — there are some concerns. it may release bits of _ there are some concerns. it may release bits of cancer _ there are some concerns. it may release bits of cancer in -

there are some concerns. it may release bits of cancer in the - release bits of cancer in the process of breaking it up and obviously the big concern varies if you release cancer cells around the body then you might end up with the spread of the cancer to other places. i've not seen any evidence of that happening but it's something and i'm sure ——we and the trial will keep an eye out for that happening. it’s the trial will keep an eye out for that happening.— for that happening. it's not clear if an _ for that happening. it's not clear if an immune - for that happening. it's not i clear if an immune responses been triggered in peter at one month after his procedure, professor was able to show me the results of his treatment. this is an mri before treatment for peter and this is the day after and you can see this area is now totally treated and the dark area represents cancer cell death.— dark area represents cancer celldeath. , ., ., ., cell death. does that mean that we are looking _ cell death. does that mean that we are looking at _ cell death. does that mean that we are looking at a _ cell death. does that mean that we are looking at a good - we are looking at a good outcome for peter potentially at the moment?— at the moment? yes, early efficacy has _ at the moment? yes, early efficacy has proven - at the moment? yes, early efficacy has proven to - at the moment? yes, early efficacy has proven to be i at the moment? yes, early. efficacy has proven to be very promising for him. and we will need to follow him up long—term. need to follow him up long-term.— need to follow him up iona-term. , ., long-term. system sonics histrosonics _ long-term. system sonics histrosonics is _ long-term. system sonics histrosonics is working . long-term. system sonics histrosonics is working on j long-term. system sonics i histrosonics is working on an updated version of his machine to work ——to sell hospitals one received regulatory approval. we've developed the platform to

be adaptable to almost any part of the body. what we are doing in the liver might be the most challenging. deep, it moves and those are potential limitations of what were doing but we've overcome those and we feel that everything we do gets easier. there are also early trials separate from histrosonics's investigating whether histotripsy can work on other parts of the body. peter's cancer is now stable but still has other tumours in his body and he is waiting to see whether histotripsy stimulates an immune response before exploring other treatment options. i exploring other treatment 0 tions. ., exploring other treatment 0 tions. ~ .. exploring other treatment otions. ~ ., ., ., options. i think no matter what the outcome — options. i think no matter what the outcome of _ options. i think no matter what the outcome of immune - the outcome of immune responses, i think it's going to be pretty dramatically life changing anyway, just for the removal of that lesion. knowing that that's gone is a huge relief. . . ,

relief. that was - dashwood-connolly and relief. that was _ dashwood-connolly and now onto dashwood—connolly and now onto something that's been in the news of recent weeks, musk possible by default must�*s purchase of twitter. i'm charging for verification to laying off half of his social media site's stuff. this laying off half of his social media site's stuff.- laying off half of his social media site's stuff. as a result of millions — media site's stuff. as a result of millions of— media site's stuff. as a result of millions of twitter - media site's stuff. as a result of millions of twitter users i of millions of twitter users are exploring another little—known platform called mastodon. so we kleinman gives us the lowdown. it mastodon. so we kleinman gives us the lowdown.— us the lowdown. it gets its name from _ us the lowdown. it gets its name from a _ us the lowdown. it gets its name from a prehistoric. name from a prehistoric elephant. and shares it. i? i name from a prehistoric elephant. and shares it. # i be there. elephant. and shares it. # i be there- with _ elephant. and shares it. # i be there. with a _ elephant. and shares it. # i be there. with a heavy _ elephant. and shares it. # i be there. with a heavy metal - elephant. and shares it. # i be| there. with a heavy metal band. yes, mastodon, _ there. with a heavy metal band. yes, mastodon, an _ there. with a heavy metal band. yes, mastodon, an alternative l yes, mastodon, an alternative to twitter that has exploded in popularity lately. the first thing you have to do when you sign up is to use a server, there are loads of them and they are themed like country, city, interests, uk, glasgow, gaming and so on. it does not matter which one you choose

because you can see the others anyway but it gives you a starting community of people who are more likely to be sharing the same sort of stuff that you're interested in as well. by the way, you don't tweet here, you toot. 0ne well. by the way, you don't tweet here, you toot. one of the attractions of this platform is that it is decentralised. no—one person or company owns mastodon. it forms a sort of collective network, they are all owned by individuals in different organisations. it means you can be at the whim of whoever owns the server and if that goes down, so does your account. you can switch servers if you want to but people are saying it's quite a fact. is also the issue of moderation, because it is not centrally want one, mastodon moderation differs from server to server and so have none —— quite a faff. it's free to use but some of the hosts asked for donations because they do not get paid. it's what called open source software, a little bit geeky and has been developed by those who have it knowledge and you

need a little bit of understanding of that in order to do it. , , ., to do it. the servers are struggling _ to do it. the servers are struggling to _ to do it. the servers are struggling to keep - to do it. the servers are struggling to keep up i to do it. the servers are l struggling to keep up with demand. mastodon has been around for about six years but hundreds of thousands of people have flocked to it since elon musk bought twitter. this is still a small fraction of twitter�*s 300 million active users but this small open source platform is rapidly growing its herd. that was zoe and now, this week's tech news. tesla is recalling just over 40,000 cars in the us because of a potential power steering problem. elon musk�*s electric car manufacturer says its power steering assist system may fail on rough roads or after hitting a pothole. a former raf pilot has started a business in which he scatters the ashes of loved ones from a drone. christopher mace, founder of aerial ashes, says he was inspired to start

the venture after scattering the venture after scattering the remains of ex— service personnel at sea during his time in the forces. the drone allows ashes to be scattered in uncommon places.— uncommon places. scattered ushers in _ uncommon places. scattered ushers in university - uncommon places. scattered| ushers in university campuses where there was a connection there, we scattered ushers on rivers, on land, which works particularly well for hindu community. heavy b&b guests will soon be able to see the total cost of their stay including cleaning and service fees in a step towards better pricing transparency on the platform. pricing transparency on the platform-— platform. the ceo said the chance platform. the ceo said the change will _ platform. the ceo said the change will come - platform. the ceo said the change will come in - platform. the ceo said the - change will come in december. and finally, why watch a movie when you can attend a meeting? us cinema chain amc is teaming up us cinema chain amc is teaming up with zoom to launch cinema —based meetings which is calling zoom rooms. the partnership will roll out sometime in 2023. i will bring the popcorn! it's a quiet day here at

atomico house where spencer and i are exploring its green credentials. 0n the surface what is going on in this building can seem pretty low—tech. there are windows open if you get hot, there are lights that can be turned on because they are not sensors on them. and each room has one of these dials. the temperature is set to what it needs to be to be carbon neutral. so you only turnit be carbon neutral. so you only turn it down or up if you really, really need to. thus there is something interesting going on with the walls. in the meetin: going on with the walls. in the meeting rooms _ going on with the walls. in the meeting rooms there - going on with the walls. in the meeting rooms there is - going on with the walls. in the meeting rooms there is a - going on with the walls. in the l meeting rooms there is a phase change material where they are exposed and that will absorb heat into the material, and then when it is not occupied it will dissipate that heat back into the room.— into the room. sensors all around the _ into the room. sensors all around the building - into the room. sensors all around the building are i around the building are collecting masses of data and thatis collecting masses of data and that is all being collated into one place. to make sure that the building is really doing the building is really doing thejob that it the building is really doing the job that it is meant to be. creating graphs on energy use and c02 explain a lot about the

real world is compared to that of ten year predictions that decisions were based on. but what really makes this setup different? aha, what really makes this setup different? �* . , what really makes this setup different?— different? a really good example _ different? a really good example is _ different? a really good example is light, - different? a really good i example is light, because people's guys work out, we can work a huge variety of lighting levels, and therefore when a light is commissioned to a high level which uses more energy, we don't necessarily notice it. it seems a bit brighter because our i adjust, and actually you can turn, tune those lights down to a much lower level, where you can still do everything just as effectively, in fact it may even be more pleasant than using significantly less energy. this buildinu significantly less energy. this building cosmic _ significantly less energy. this building cosmic evolution and ethos has been born out of different kind of success. yeah, and this is probably a good — yeah, and this is probably a good time to meet a man behind the building, and a whole lot more — the building, and a whole lot more. niklas zennstrom co—founded skype, and atomico is his— co—founded skype, and atomico is his tech— co—founded skype, and atomico is his tech focused adventure capital— is his tech focused adventure capital firm. and when he is looking _ capital firm. and when he is looking for companies to invest

in, looking for companies to invest in. he — looking for companies to invest in. he is — looking for companies to invest in, he is also interested in how— in, he is also interested in how they— in, he is also interested in how they intend to affect the planet — how they intend to affect the lanet. .. how they intend to affect the lanet. ., , , .. how they intend to affect the lanet. ., ,, ., .. planet. the whole mission of atomico is — planet. the whole mission of atomico is to _ planet. the whole mission of atomico is to support - planet. the whole mission of i atomico is to support founders, game changing founders using technology to replace legacy businesses with new ways of doing things. and potentially build great businesses, and by doing that, building sustainable businesses that are, for example, replacing eating meat by lab produced meat, building electric aeroplanes or indoor farming. but we also, we are encouraging founders to do that. but we realise also that we need to walk the talk, and we need to lead by example, by looking after our own house, literally stop you founded skype, which is a type of technology that is now allowing people to work from home orfrom now allowing people to work from home or from anywhere. now allowing people to work from home orfrom anywhere. it from home or from anywhere. it might be tempting to think you would be all foreclosing offices anyway? we created s -e offices anyway? we created skype because _ offices anyway? we created skype because of— offices anyway? we created| skype because of necessity, that we were remote workers.

when we started, we had people in different places and we wanted to be able to communicate. but you know what, there is nothing that beats coming together and, as humans we are not individualistic, we are proud people. i am very much for getting together, it doesn't mean you always have to be together, because i was just on a video call with some of our colleagues because they are working intensely on a project, so one colleague said i am at home so i can go deep and focus on something. i believe you have a combination.- on something. i believe you have a combination. you are very passionate _ have a combination. you are very passionate about - have a combination. you are | very passionate about europe being able to compete with silicon valley. how are we doing? i! silicon valley. how are we doinu ? , .. .. silicon valley. how are we doinr? ., ., doing? if you would ask the question. — doing? if you would ask the question. say _ doing? if you would ask the question, say five _ doing? if you would ask the question, say five or - doing? if you would ask the question, say five or seven | doing? if you would ask the i question, say five or seven or ten years ago, you would have probably asked with, why is it that europe is failing in tech? they are relatively doing really well. because there will be a time that we don't talk

about the tech sector anymore, because every company, when we talk about sustainability, when we talk about companies that are going to have a long duration, they need to be technology companies. and this is about the global movement of entrepreneurship which is happening everywhere, and it is fantastic, it should not be one place being —— beating another, it should be happening everywhere.— it should be happening everywhere. you are an entrepreneur, - everywhere. you are an entrepreneur, you i everywhere. you are an entrepreneur, you have everywhere. you are an i entrepreneur, you have met a load of entrepreneurs, what makes a good entrepreneur? it is a good question, and the hardest question to know. we are meeting a lot of entrepreneurs, we always say, is this the one? we don't know, ask us in ten years. it is impossible. but you have to have grit, passion, perseverance. and they need to be so passionate about their field, that they want to disrupt or build, they really inherently understand it. and they need to be able to articulate their strategy and they need to be a leader so they need to be a leader so they can get people to follow

them. and they need to have a lot of perseverance. because it is not easy. lot of perseverance. because it is not easy-— lot of perseverance. because it is not easy. thank you so much for our is not easy. thank you so much for your time. _ is not easy. thank you so much for your time. one _ is not easy. thank you so much for your time. one more - for your time. one more question for you, you have heard of solar power and wind power and wave power, are you familiar with the power of dance? not really. 0k, well strathnairn. because shayna mccallum has been to a nightclub in glasgow which is trying to harness the energy of body heat. —— shiona mccallum. energy of body heat. -- shiona mccallum-— mccallum. it's no secret i is heatin: mccallum. it's no secret i is heating up- _ mccallum. it's no secret i is heating up. each _ mccallum. it's no secret i is heating up. each year i heating up. each year temperatures rise as icecaps and glaziers sink. so a time of unprecedented climate change, what more can be done to reduce our global carbon emissions? you may have heard of wind, wave or solar power. but what about the power of dance? 0r about the power of dance? or that about the power of dance? 0r thatis about the power of dance? or that is the aim of a venue here in glasgow who are putting the planet front and centre by converting people's body heat into renewable energy, they aim

to drastically reduce their carbon footprint. dance music is a huge warehouse which hosts major club nights. the venue claims it is the first in the world to use a heating and cooling system like the one here, aptly called bodyheat. —— dance and i got a huge —— i got an exclusive edit launch. i have been at some gigs and it occurred to me there was a lot of heat being generated in the spaces when great music is being played. spaces when great music is being played-— spaces when great music is being played. dance music plays. being played. dance music plays- we _ being played. dance music plays. we can _ being played. dance music plays. we can capture i being played. dance music plays. we can capture that| being played. dance music - plays. we can capture that heat and we can _ plays. we can capture that heat and we can store _ plays. we can capture that heat and we can store it _ plays. we can capture that heat and we can store it in _ plays. we can capture that heat and we can store it in the - and we can store it in the ground. you and ijust standing here right now are generating about 150 watts of energy. when you start dancing, let's say medium pace like the rolling stones or something, you might be generating 250 watts. and thenif be generating 250 watts. and then if you have got like a big dj, absolutely slamming

baseline making everyone jump up baseline making everyone jump up and down, you could be generating 500— 600 watts of energy. generating 500- 600 watts of ener: . . y .. generating 500- 600 watts of ener: . . ., , generating 500- 600 watts of eneru. . . , ., energy. can you quantify that for me? i _ energy. can you quantify that for me? i don't _ energy. can you quantify that for me? i don't know - energy. can you quantify that for me? i don't know that i i for me? i don't know that i know what that means. your house might _ know what that means. your house might need _ know what that means. your house might need a - know what that means. your house might need a ten i house might need a ten kilowatts system, so that is 10,000 watts. so you and i would be generating about... i% to 2% of the heat that is needed to heat your whole house up. needed to heat your whole house u -. �* .. needed to heat your whole house u . _ �* ., ., . , needed to heat your whole house up. but how exactly does the bodyheat — up. but how exactly does the bodyheat system _ up. but how exactly does the bodyheat system work? - up. but how exactly does the | bodyheat system work? the up. but how exactly does the i bodyheat system work? the heat from the dancers is sucked up into events and rather thus —— rather than just being pumped out into the atmosphere like a regular air—conditioning unit, it is transferred into a specialised fluid and then pumped into a dozen boreholes, 200 metres under the venue's community garden. the sandstone and mudstone here absorb and retain the heat, effectively acting like a thermal battery. then when that energy is

needed, weeks or even months later, it can be transferred back through heat pumps to warm or cool the venue. brute back through heat pumps to warm or cool the venue.— or cool the venue. we have attached — or cool the venue. we have attached temperature i or cool the venue. we have i attached temperature sensors to all of the loops, so we can see the individual temperature of each loop. and how that is varying, and that all feedback into the control system in the plant room, so we can see not just the total temperature of the system but each individual loop and that allows us to balance it for efficiency. the bodyheat— balance it for efficiency. the bodyheat system - balance it for efficiency. the bodyh eat system is - balance it for efficiency. the bodyheat system is being turned on at a party, and what better way than an event honouring a dance that originated in scotland, the slosh? and with every step, each person is their own generator of renewable energy. which you can see, using this forward—looking infrared camera. dance music plays. butjust how much heat

has been captured? so plays. butjust how much heat has been captured? 50 i plays. butjust how much heat has been captured?— has been captured? so i have a rah u- has been captured? so i have a graph up here. _ has been captured? so i have a graph up here, this _ has been captured? so i have a graph up here, this is - has been captured? so i have a graph up here, this is what i has been captured? so i have a graph up here, this is what the | graph up here, this is what the control system is showing us, from the temperature going into the borehole. this is where we see spikes from the amount of people dancing and the amount of energy we are putting into the boreholes. tonight you can see there is a little spiky, and that is 200 people doing the slosh for 30 minutes. we managed to raid the damage from 13 to 13.5 degrees. as events go that is a small one, but you get a thousand people in there, dancing for four or five hours at a gig, you could generate about 800 kilowatt hours of thermal energy, that is a lot of energy. in thermal energy, that is a lot of energy-— of energy. in fact, david claims that _ of energy. in fact, david claims that is _ of energy. in fact, david claims that is enough i of energy. in fact, david i claims that is enough energy of energy. in fact, david - claims that is enough energy to make 34,000 cups of tea, or heat 84 houses. so if the system is so groundbreaking, then why haven't we seen it before? . ., , , then why haven't we seen it before? . . , , , before? heat in many ways is sort of forgotten _ before? heat in many ways is sort of forgotten energy i sort of forgotten energy source. we were basically in

the 80s and 90s, as we have seen, those costs rise, geothermal becomes more competitive. figs geothermal becomes more competitive.— geothermal becomes more competitive. as innovative as body heat — competitive. as innovative as body heat is. _ competitive. as innovative as body heat is, it _ competitive. as innovative as body heat is, it is _ competitive. as innovative as body heat is, it is a _ competitive. as innovative as body heat is, it is a huge - body heat is, it is a huge investment. 50 how could the venue justifies installing a system that costs over £600,000?— system that costs over £600,000? �* , .,, .,, £600,000? any development has risk attached _ £600,000? any development has risk attached to _ £600,000? any development has risk attached to it, _ £600,000? any development has risk attached to it, and _ £600,000? any development has risk attached to it, and when - risk attached to it, and when you are putting in a system which is the first time ever, you are taking a bit of a leap of faith. but someone has to be that first investment. if we can make it work here in this environment, there is no reason we can't take it to other venues and other environments, and notjust here in scotland, in the uk, across europe and further afield.— in the uk, across europe and further afield. the team here is clearly _ further afield. the team here is clearly committed - further afield. the team here is clearly committed to - further afield. the team here is clearly committed to this l is clearly committed to this new technology, and the importance of doing their bit to help the environment. and

clubbers have an extra reason to stay on the dance floor all night long. to stay on the dance floor all night long-— night long. call me ignorant but i think— night long. call me ignorant but | think the _ night long. call me ignorant but i think the slosh - night long. call me ignorant but i think the slosh looks l night long. call me ignorant but i think the slosh looks a j but i think the slosh looks a lot like line dancing. i but i think the slosh looks a lot like line dancing.- lot like line dancing. i think ou will lot like line dancing. i think you will get _ lot like line dancing. i think you will get a _ lot like line dancing. i think you will get a lot _ lot like line dancing. i think you will get a lot of - lot like line dancing. i think you will get a lot of angry l you will get a lot of angry responses. you will get a lot of angry reaponses-_ you will get a lot of angry resonses. , ., «a responses. true. sorry. thanks for watching. — responses. true. sorry. thanks for watching, see _ responses. true. sorry. thanks for watching, see you - responses. true. sorry. thanks for watching, see you soon. - for watching, see you soon. bye—bye. hello. this exceptionally mild weather is producing some remarkable temperatures — 19.5 degrees celsius in lancashire on friday, 19.1 at lossiemouth in murray. so, what's going on? we've got a big dip in thejet stream to the west of the uk and it's around the base of this dip we're drawing up close to the azores, some of this exceptionally

mild air ourway. so temperatures are so far above average for the time of year. in fact, on thursday night, provisionally, according to the met office, both scotland and northern ireland had their warmest november nights on record. and of course, climate change is not just about those big headline—grabbing daytime temperatures, it's how far we keep warmth overnight as well. very windy on friday across northern areas, and yet more rain in the highlands. in fact, one place since monday has had 258 millimetres of rain, some months worth of rain in a week. a lot of that rain has gone this weekend keeping the very mild weather. not as windy, though, and that does increase the risk of seeing some mist and some fog and actually a cooler start to the day for saturday, in fact. and the clear skies in north—east scotland, low single figures in some spots, six or seven degrees in east anglia with a lot of low cloud and mistiness across a large part of wales and england. northern ireland seeing some overnight rain clearing away as that trundles north across scotland.

behind it will brighten up, though, still the cloud thick enough in a few spots for a bit of drizzle. some eastern parts of england may stay with some low cloud, whereas for much of england and wales will turn sunnier. a cooler day, but still very mild for scotland, northern ireland, northern england, through much of england and for wales we're talking 16 to 18 degrees celsius. and yes, those lighter winds allowing more in the way of low cloud and mist and fog to form as we go overnight and into sunday morning, thick enough for some drizzle in places, particularly through eastern scotland, central and eastern parts of england, a milder start to the day on sunday. so for remembrance sunday, then, a grey, misty, murky start in many places. and although for many places it will brighten up and get to see some sunshine. there'll be some spots from eastern scotland and down through central and eastern parts of england that could well hold on to some grey conditions, maybe quite widely into yorkshire. another very mild day out there, wind freshening in the west and rain to northern ireland as we go on into the evening. and the main feature of the weather for the week ahead is that temperatures are going to come down much closer to average, spells of strong winds

and heavy rain at times.

welcome to bbc news. i'm lucy grey. our top stories: crowds cheer ukrainian troops as they enter kherson after russia's retreat. the ukrainian president hails it as an historic day and thousands celebrate. they've been singing here for hours, singing popular songs like this, singing the ukrainian national anthem. this is the most significant victory for ukrainian forces in some time. moscow describes the troop withdrawal as a "military "manoeuvre" but analysts call it one of the biggest failures of russia's invasion of ukraine. president biden urges countries at the cop27 climate summit in egypt to raise their ambitions, saying the us is on track to meet its own targets. one of the world's biggest cryptocurrency exchanges, ftx, has gone bust and its

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