this is bbc news, the headlines: around a hundred people have died after a massive explosion when a fuel tanker collided with a lorry in sierra leone's capital, freetown. fuel spilled before igniting and the resulting fire engulfed crowds of people and vehicles at a busyjunction. the vice—president has called it a national disaster. police investigating a deadly crush at a music festival in the us state of texas say they're looking into reports that someone in the crowd was injecting others with drugs. eight people died in the stampede at the music festival in houston, when fans pushed towards the stage, causing panic. marches have been taking place in more than 200 cities around the world as part of what's been described as the global day of action for climate justice. tens of thousands of people took to the streets of glasgow where the un's cop—26 climate talks are taking place.

a fourth person has died among the group of paddleboarders who got into difficulty on a river in pembrokeshire last week. andrea powell had been in a critical condition in hospital. on saturday, surfers at aberavon beach paid tribute, to one of the other paddleboarders who died. here's megan paterson. gathered with their boards to remember paul o'dwyer, his life and his passion. a paddle out�*s reserved really for very special people, it's a surfing tradition, and we thought it was very fitting, at a tough time for the surf club, to come together and really celebrate someone who was a great guy. paul o'dwyer was one of four paddleboarders who died after getting into difficulty on the river cleddau in haverfordwest, a week ago. morgan rogers and nicola wheatley also lost their lives. andrea powell spent

a week in hospital in a critical condition, but died yesterday from her injuries. five other people were part of the paddleboarding excursion — they were rescued uninjured. a weather warning for heavy rain was in place when the group, part of south wales paddleboarders, went out. the river was high and fast flowing. police confirmed today a woman from the south wales area has been arrested on suspicion of gross negligence manslaughter. she has been released under investigation. megan patterson, bbc news. now on bbc news, it's time for the travel show. coming up this week... the world's coldest cowboys. that was incredible. sighs. absolutely dashing across the water on horseback. ancient stained glass and very careful hands. i have been working here for 30 years and every time i see this,

my heart sings. they are so beautiful. and how to get your old banger across a frozen lake. oh, it is worse than i thought. it sounds very bad. it's fixed russian—style. theme music plays. as the seasons begin to change, icelandic farmers drive their horses down dales and mountains to events known as roundups so they can shelter them on a farm during harsh winters. we have travelled to the north—west of iceland to attend one of the biggest

roundups in the country, known as laufskalarett. we are here to find out why this spectacular icelandic tradition is more than an annual event, it is a way of life. icelandic horses — this breed perfectly embodies their homeland. they are rugged... ..tough... ..and absolutely stunning. and these guys are not just any old horses, these are viking horses. their ancestors were ridden by viking warriors, when they first came to iceland over 1,000 years ago.

they can actually carry, they can pull, and they are excellent to sit on. so i think the vikings clever, not only cruel, they were also clever. this is the only breed of horse in iceland and it is an important part of icelandic heritage and culture. these are all purebred icelandic horses and if they ever leave the country, they can't come back. haukur is a horse farmer, and every spring, when the lambing season is done, he and many other farmers let their horses spend their summers roaming free in the highlands and valleys of iceland. it is a very good for their upbringing. they live there with big hordes, and they learn the most in the heard, the behaviour and how to survive, to walk in the landscape, all this stuff.

haukur is part of a collective of farmers who run a tour company called islandshestar, which gives tourist like me the chance to be a cold cowboy and find out what makes these horses so special. 0n the back of an icelandic horse, looking out at this landscape — it is not terrible, is it? icelandic horses have been bred over the years to be friendly and trusting of humans which means you can travel across the countryside in a unique fashion. the way we travel, when we are travelling with our horses, is that we have this heard of lose horses with us. they are there that we can stop and swap, you know, so we are always having a fresh horse so we can keep up the tempo, we ride a bit faster. we ride, stop, swap, go. we could go

on forever, actually. the way to get the wild horses to come with you is, up, up. up, up, like this. most horses can trot, canter and gallop. but not every horse can tolt, special gait that icelandic horses have which does notjust get you across the harsh terrain but it gets you across it quickly and comfortably. the tolt, it feels like you are sitting on a soft sofa. they are very, very smooth. only one foot at the time is on the ground so they are kind of moving like a fast walk, actually. we reach the final leg of our ride and to complete it, we have to cross an ancient trail which goes straight across this lake. but as we swap our horses

in preparation for the task ahead, we receive a norse omen in the shape of a sea eagle. we have a lot of old beliefs here, superstitious a little. the ravens know a lot, the eagle is very important, he is watching over us a little and bringing us luck. that is what i believe in at least. and with that piece of good news, it is time to hit the water. that was incredible. sighs. absolutely dashing across the water on horseback, surrounded by these beautiful mountains. i think it's one of the most exhilarating things i have ever done in my life.

as autumn moves up, signs of winter begin to move in, and even if the rugged icelandic horses need help to shelter from the coldest season of them all. every year, the atlantic farmers head to the islands and into the valley to round up their horses and bring them home for winter. the horses are driven to lower ground, to places like this. this is laufskalarett, one of the biggest roundups in iceland. every farmer has a small piece of the paddock. you help each other out to put the correct horses in the correct part. this takes a while but it works.

i think we can definitely fit this one in my hand luggage. due to covid, this amazing spectacle has seen fewer people able to attend this year's event. usually it is packed with people, tonnes of people, everybody drinking, laughing, singing. it is much more quieter now. so it is a little bit different but it is cosy, it is nice. you have all the nearest family and friends so. in normal times, a huge ball would be held after the event, that thousands of people would attend. but in farm houses across the countryside, icelanders are still celebrating in their own ways that their faithful equine friends have made it home safely for the winter. music playing.

well, we are not in a great hall and noone is drinking back there but i think it is fair to say that when it comes to celebration, the old viking spirit is alive and well here. next, we are off to canterbury cathedral in south—east england where research has been taking place on its world famous stained glass. it has been thought that the earliest of this glorious glass dates back to 1176 but could this new fact—finding mission reveals some surprising results? choral singing. canterbury cathedral is one

of the most important places of worship in england and it is wet archbishop thomas beckett was brutally murdered in 1170 by supporters of king henry ii. for hundreds of years, it has attracted visitors from all over the world and one of his biggest draws has been its stunning stained glass. there is a magic about it. it changes all the time, with the light. 0ur wonderful early mediaeval stained glass windows were made by the superstars of their time and if they are truly some of the best in the world. behind the creation of these mediaeval masterpieces was the sophisticated and international artistic trade. most of the glass in the early and high middle ages was made in what is now northern france and southern belgium, that sort of region. they would make sheets of glass and then pack them into straw and onto barges and just send them across the rivers

and across the channel to england. craftsmen, master masons, travelled all over europe. there were no real borders. i am preparing to paint the face of christ, no pressure. as well as maintaining and restoring the glass, leone's team carry out research. a detective story combined with archaeology. these are historical documents. they obviously tell us about how people in the middle ages experienced their world. this panel here, shows us the scene of the execution of eilward of westoning. and it is all depicted in great, graphic detail. this is a guy who had had his eyes gouged out and his testicles removed. it is really, really evocative of the scene. you can nearly hear him scream.

but for over 30 years, there has been an unsolved mystery over the cathedral's most famous windows, the ancestors of christ. we thought that the earliest of those dated to about 1176 but in the 1980s, a wonderful art historian, called madeline caviness, suspected these figures were much older. she thought at the time that nobody would ever be able to prove it. she was just going from a stylistic analysis. a team from university college london have been analysing some of the ancestor series. we use a non—invasive technique that sends a beam onto the surface of the glass. this beam of x—rays interacts with the material and re—emit another radiation that is detected and processed by the instruments. studying the chemical composition of the glass, we are able to understand the periods in which it was produced

and also its origin. so what we found out is that the glass from the ancestor series, it is older than we originally thought. so we proved an hypothesis put forward by madeleine caviness in 1987. choral singing. this new research estimates that the windows could be half a century older than previously thought, making them among the oldest in situ stained glass in the world. to now find that she has been proved right is just so thrilling, you know? decades later. that is so wonderful because that art historian is still alive, and to call her up and after all these decades later, to say to her, "you were right, and we could prove it", that is fantastic.

hello madeline! wonderful to see you, congratulations on getting your thesis verified after all this time! it was absolutely extraordinary. rejuvenating, and octogenarians love to have early memories, so it brought back so much. but the main thing is to realise that this little tiny pebble that i put in the water so long ago, 35 years ago, could so much later be taken up and ingeniously proved that i was right. so it does feel good. no, it has been a tough couple of years for all of us, and i am growing older. so absolutely extraordinary experience, it means a lot to me. it really does. in proving that these windows

are older than originally thought, we now know that they were present to bear witness to thomas becket�*s grisly murder, and the spectacle of king henry ii begging for forgiveness. and this discovery is just the beginning. the research on this ancient glass continues. who knows what other secrets could be uncovered? still to come on the travel show: we follow an amazing road trip across the frozen surface of lake baikal, almost 400 miles long and full of cracks. and as if that's not hard enough, here is the car they are doing it in. the ice is really thin, last year it was super thin and now this year it is even more thin. so don't go away.

our next trip is to a literal hot spot, located in a lava field in southern iceland that is over 800 years old — the blue lagoon. it's a geothermal wellness spa. containing waters with supposedly extraordinarily regenerative qualities, the site attracts visitors from across the globe. iceland runs 100% on renewable energy. the blue lagoon is man—made and its waters are the byproduct of a nearby geothermal power plant. what is fantastic about the blue lagoon, it is not actually blue, it is white, but the silica's reflection of the sunlight makes it appear blue. the waters flow from 2000 metres below the surface of the earth.

it is there, deep underground, that they are imbued with silica, algae and a whole host of minerals that are said to be great for your skin. so you could kind of call it, like, a fountain of youth here. it is really great for small lines and wrinkles in the skin, and it keeps you fresh and young forever. fountain of youth? brilliant! can't wait tojump in. of course i can't take these claims at face value, i'd really better try them for myself. 0h! laughs. oh, this is a very odd sensation of being absolutely freezing on top, and very calm and comfortable down below. oh, it is lovely, it's like a bath. i suppose all i have to do now is lay back and wait to look 10 years younger. it's a hard job for some. and to wrap up this week, we head to siberia, for the first in a 3—part series following three friends from lithuania on a teeth—chatteringly cold journey

across the surface of lake baikal, the world's largest freshwater lake. and if that weren't challenging enough they are doing it all in a communist—era car. speaker: ladies and gentlemen, welcome to irkutsk— international airport, _ temperature is 27 degrees below zero... i am karolis, sometimes we call me an explorer. right now i am here with two other guys, and we are going to cross the biggest lake in the world, called baikal. to cross that lake either way, on foot, by car or motorcycle is a huge challenge. we will do this in a russian car, which we will buy today for 800 euros. keep looking. he is older than i am, 1.5 litres, 75 horsepower,

good tyres. spiked tires, and what about colour? colour is good. yellow. ok, i think we need to call him. i am calling regarding your car. you are selling the car? lada? jurgis, we can solve this somehow? yeah, i have an idea. it doesn't look good. air conditioning working? air condition, yes, yes. owner, what about heated seats?

thank you. what do we have here? oh, it is worse than i thought. we have to change it also. it sounds very bad. it is fixed russian style. laughs. you want a challenge? you'll get a challenge. laughing continues.

inspirational music plays. for me, the safety is on the first place. we need to come back home alive and healthy. we are already on the shore of baikal. i feel a bit shaking. i am just hope it all goes well. if the car breaks through the ice, guys, lam there. no, forget that, i don't care.

is it water? 30 centimetres is not bad. not bad is 1.5 metres. the ice is really thin. last year it was super thin and now this year it is even more thin. fingers crossed, we need to pray well now. baikal is baikal, it is serious. you cannotjoke with that. laughs. and we will be catching up with karolis and co on part two of their epic drive next week. that is unfortunately all we have time for this week, but coming up next

time: wish me luck! we find out how the fast electric cars of extreme e are raising awareness of climate change. don't forget you can catch up on all of our adventures on bbc iplayer, we are on social media too. just search bbc travel show on all the main platforms and you will find us there. but for now from me and all my new viking friends i've met here in iceland, it's goodbye. hello. saturday's cloud and rain moving south was only one part of the weather picture. the other was the strengthening wind, and close to this low pressure, northern scotland will get off to a stormy start on sunday morning.

there could be some travel disruption, as severe gales move through, and still some outbreaks of rain, whereas much of the rest of the uk, although it is still breezy, will get off to a dry start. cloudy skies in the west, and it's mild, temperatures around 6—11 degrees celsius. just focus on the winds, though, on sunday morning, particularly across orkney and northeast scotland, here some gusts 60—70mph here, maybe a little bit more exposed coasts and hills with some large waves on some of the coasts as well. so some disruptive strong winds to begin the day, slowly easing as the day goes on. still a few showers moving through here. maybe one or two showers with the cloud across the western side of the uk, but most places, as high pressure begins to move in, will have a dry sunday. the best of any sunny spells in the east. these temperatures are a little down on saturday's readings, but still on the mild side of average. now, as we go on through sunday evening and night, we will find some clear spells

through eastern parts of scotland and down the eastern side of england. and this will allow for a touch of frost in the coldest spots, as temperatures drop close to freezing. we will keep the cloud in the west, the temperatures hold up here, and it is a mainly dry night to come. we have another weather system coming our way. this area of low pressure, the weather fronts around it, and it will gradually take this weather front southwards across the uk. it will take a lot of the week to do so. it will slowly bring in some outbreaks of rain across northern ireland on monday, into scotland, especially the north and west. could see some reaching into parts of northwest england and wales as well, whereas the rest of wales and england will stay mainly dry, some sunny spells in eastern england, around 11 celsius here, feeling rather chilly, whereas in belfast, up to 1a celsius. the breeze freshening again across northwestern areas. here comes the weather front slowly moving southwards as the week goes on. but we will maintain a west or south—westerly flow into the uk.

so for the week ahead, things are looking mild. you will notice that on the temperatures here. a lot of cloud around, a few sunny spells, and again, some outbreaks of rain very gradually spreading southwards as the week goes on.

welcome to bbc news — i'm rich preston. our top stories: hospitals overwhelmed in sierra leone after 100 people are killed in a fuel tanker explosion. many more are injured. us police are investigating reports that someone at a houston music festival was injecting people with drugs before the crowd stampeded. demonstrations around the world demanding urgent action to combat climate change as the cop26 summit continues. and the death of a pregnant woman sparks protests in poland against the country's near—total ban on abortion. she's said to be the first woman to die as a result of the law.