of the virus outbreak to "very high". more than 50 countries are now reporting cases. fears about the economic impact of the coronavirus have driven stock markets further down around the world. it's been the worst week for stocks since the financial crisis of 2008. nato has called on russia and syria to stop their offensive in syria's idlib province and halt what it called their "indiscriminate air attacks". it comes after 33 turkish troops were killed, in what ankara says was a syrian air strike. hong kong police have arrested three veteran pro—democracy figures — including one of the city's most high—profile entrepreneurs, jimmy lai. he's been charged with illegal assembly and intimidation.

more now on our top story. what are the chances of catching coronavirus — and what do you if you do get it, and how might it affect plans to travel abroad 7 our medical correspondent fergus walsh has been answering some of the key questions. it is increasingly likely that we will see out rakes of the new coronavirus centred here in the uk. france and germany have seen their cases suddenly " both have warned of impending epidemics full of if that happens here, expect more school closures. the postponing of sport events and other mass coverings. there will be a big increase in homeworking and that will impact the economy. fewer people at restaurants and shops. seasonal flu economy. fewer people at restaurants and shops. seasonalflu is responsible for thousands of deaths here every year and we know the new coronavirus causes a mild illness in

four out of five people, they will not need medical treatment. but older people and those with underlying health problems are at greater risk. it is hoped that containment measures will prevent the virus from getting established here. an epidemic would put serious pressure on the nhs. many operations would have to be cancelled. as for a vaccine, don't expect one to be ready for widespread use for at least a year. we all have a role to play in keeping germs that day. top of the list is regular hand washing. it is not just of the list is regular hand washing. it is notjust a quick angle under the tap like this. it should take 30 seconds. this virus, like others, is spread by droplets so if you must cough, use a tissue and we need all the cook of your elbow. if we get a

big outbreak of the new coronavirus here then social distancing could help. avoid shaking hands or other close contact. if you are planning to go abroad than you need to keep up to go abroad than you need to keep up with the latest foreign office advice. for travellers, up with the latest foreign office advice. fortravellers, returning from northern italy, north of pisa florence or rimini, if you get a cough off lever then you need to stay indoors and avoid contact with other people and call nhs iii. stay indoors and avoid contact with other people and call nhs 111. that advice could easily be extended to other parts of europe as tourists in tenerife found, getting out of the uk was easy. getting back is much more difficult. there is a lot more information about the new coronavirus with more of your questions answered on the bbc website. now on bbc news: witness history. this month, razia iqbal is at the british academy in london to present five extraordinary art stories

that shaped our world. hello and welcome to a special edition of witness history with me, razia iqbal here at the british academy in london as we present five amazing stories from the world of art. coming up, how the acclaimed british sculptor henry moore changed modern art. we speak to the man who wrapped the reichstag in 1995 and a nigerian artist inspired by the oil pollution of her homeland. plus the pioneer who photographed czarist russia in colour. but first, we go to china where in 1974 and accidental discovery revealed one of the wonders of the world. a vast terracotta army which laid very neatly earth for more than 2000

yea rs. neatly earth for more than 2000 years. archaeologists worked on the astonishing fine. it is a vast pottery army that is slowly being unearthed from the tomb where it has lainfor unearthed from the tomb where it has lain for more than 2000 years.

now to something more modern. the british artist henry moore

revolutionised the world of sculpture during the 20th century, changing the way we see the human body and setting his work in a natural landscape. his daughter, mary moore, talks to us now about her memories of her father and the ideas that inspired him. the work of henry moore has been seen in almost every country in the world. he has made a staggering total of something like 900 sculptures. as well as thousands of drawings and drafting's. his work seems so co mforta ble drafting's. his work seems so comfortable that you can't believe there was a feeling that it was dangerous, that it was outrageous and that it would defile use. his first exhibition was in 1928. already his work was causing controversy. the art schools that he was studying in called his work ugly

and disgusting and he fed on a cesspit. what took people back was a manner of expression that emphasised the sexual nature of his subjects and rejected the realistic treatment of the human figure. it was considered to be primitive, decadent and savage and in a way out was. he wanted to arouse in us deepest forces. a great deal can still be done with 3—dimensional forms as a means of expressing what people feel about themselves and about nature and about the world around them. my father and his generation looked rather to ethnographic works, what they called primitive works. my belief is that no matter what advances we make in technology, and in the controlling of nature, the real basis of life is human relationships. it is through them that we are happy or unhappy.

relationships. it is through them that we are happy or unhappym 1950, his daughter mary who had been born during the war was now four years old and a great source of pride. in our home, anti- studios we re pride. in our home, anti- studios were interchangeable. he had a few basic subject that he could not help from returning to again and again. 0ne from returning to again and again. one of them was the reclining figure. what is the particular significance of that? it may be that it connects the human figure with landscape more easily than what a standing figure could. and landscape is one of my great obsessions. another one was the mother and child. i have done many mother and child. i have done many mother and child structures and most of them have been the idea of the larger form, a relationship with the smaller form in a project sense and the sense of a gentleness and tenderness. he remains a countryman

at home —— at heart. his fields that make studios are surrounded by fields and he is his culture in the open air full. there was an exhibition in florence in 1972 which was a remarkable exhibition and it was a remarkable exhibition and it was a remarkable exhibition and it was a first in many many ways. assembled in the fort and the ramparts nearly 200 sculptures and 100 drawings. the big sculptures in the open air, each one cited by moore himself, was what made the exhibition unique. 0ne moore himself, was what made the exhibition unique. one would have to travel the world to see so much at any othertime. travel the world to see so much at any other time. my father was very worried. he thought that people would go, tourism back in the 1970s was not quite such a big deal and getting to places was much harder. in the end it was a fantastic

success. in the end it was a fantastic success. something like 400,000 visitors. i think they need to be set outside. i want to go up and touch them. but you can run up and i’ui'i touch them. but you can run up and run your hand around them. he wanted sculpture to be part of everybody‘s life and experience and enrich their lives. and we should go on fighting that fight. henry moore's daughter mary. certainly the power of sculpture lives on in our next story. sokari douglas camp is an acclaimed artist based in london but the inspiration for her work comes from her homeland of the niger delta in nigeria, a world of rivers and creeks that has been devastated by decades of pollution from the oil industry.

i like metal because it has tensile strength that is fantastic. something very small can hold up something gigantic. i love the fact that you can stretch it in the most incredible way, make things that look like fabric and look soft. my childhood started off in independent nigeria and i was sent to boarding school in england so i had one foot in nigeria and one foot in england. my in nigeria and one foot in england. my people, the calamari, live on 22 islands in the niger delta and our transport was by boat. dugout canoes that women could take out and they would gather periwinkle is on the mudflats and make the most incredible stew. you had oysters growing on the roots of mangroves, dangling in the water. nature was

full. gradually these things have been dying out because of pollution. because of the way that oil is being extracted there. oil was discovered in the niger delta in 1956 and now nigeria is one of the largest oil countries in the world. the agoni people say their homeland has been ruined by oil. we are going to demand our rights peacefully, nonviolently to demand our rights peacefully, nonviole ntly and we to demand our rights peacefully, nonviolently and we shall win. ken sarwewa, the leader of the agoni people. the nigerian government say he isa people. the nigerian government say he is a murderer and has sentenced him to death. ken sarwewa tried to get the oil companies to behave differently by talking. there was no

violence involved. nigeria's military leaders provoked a storm of outrage today when they went ahead with the executions of nine human rights activists, including the playwright and activist ken saro—wiwa. no—one could believe it. no—one could believe it. pure, pure sadness. can's memorial was extremely important to me, to make sure people remembered him. —— ken's memorial. this is a miniature version of the real costs, the real buses life—size. the memorial had ken's name on a banner at the front and then on top of the bus were barrels with the names of the other aides that were killed at the same time. on it, it had words that ken saro—wiwa said in one of his last interviews, before he was executed.

the battle bus had quite an adventure. the environmentalists from nigeria decided that they would like the memorial to travel to nigeria, and when it got to lagos port it was arrested. by nigerian customs. because it was believed that it would cause havoc. it is still locked away. it is still arrested. 0ur problem is global. 0ur clothing, toilet seats, lipstick, everything has this crude oil element to it. it is an incredible product. it is a magic product. and yet it is killing us. so it keeps on turning up in my work. the wonderful

sakari douglas camp. remember, you can watch witness history every month on the bbc news channel or you can catch up on all our films, along with more than 1000 radio programmes in ouronline with more than 1000 radio programmes in our online archive. just search for bbc witness history. our next story ta kes for bbc witness history. our next story takes us to germany, where in 1995 a public art project was seen by millions. it became a symbol for berlin's renewal after the fall of the wall and the collapse of communism. it is the story of the couple who wrapped the reichstag. communism. it is the story of the couple who wrapped the reichstagm is an eccentric dream, but one that the husband—and—wife team have cherished for nearly a quarter of a century, and this weekend the bulgarian artist christo and his wifejean—claude bulgarian artist christo and his wife jean—claude began rubbing bulgarian artist christo and his wifejean—claude began rubbing the german parliament building in silver fabric. it is very difficult to explain if you don't see it. no drawings, no scale model can match the complexity of the project. the fabric, actually, is not completely touching the surface of the stone.

the project started in 1972. the cold war is still in full speed. the berlin wall was built. permission to wrap the reichstag was refused three times. if the wall had not fallen down, probably we would never do the reichstag. for more than two decades, the artist christo and his wifejeanne—claude decades, the artist christo and his wife jeanne—claude have decades, the artist christo and his wifejeanne—claude have wanted to work with the building about, for them, symbolised the cold war. you know, i was born in bulgaria in 1935. highly soviet communist country. and i escaped to the west speaking only russian and bulgarian. coming from a communist country i tried to do something involving the east— west relations. tried to do something involving the east- west relations. it has been bombed and set on fire, seen war, revolution. but never before has the reichstag been wrapped in silver fabric. we never can believe what is the project until we see it for real. christo himself is paying for

the project, helped substantially by sales of his sketches and other work. the reichstag cost us $12 million in 1995. probably today about $20 million or $25 million. this project, we need to build an entire structure of engineers, specialists, lawyers, services. very much like building a highway or a bridge or an airport. it was wrapped by 100 rock climbers. they came down with 100,000 square metres of fabric. jeanne—claude and myself, we are born together artist. and this i missed so much jeanne—claude are born together artist. and this i missed so muchjeanne—claude today. we were partners, we lived together, we would fight together. it was like an adventure that you cannot repeat it. this novel treatment, as they

say, isn't classic tradition of art. the reichstag was a victorian building with lots of ornaments, decoration. suddenly it was changed, like a sketch. like what is essential, to hide, to wit, the forms, they are all hidden by this fragile material that moved with the wind. it was in constant motion. the building took on a shrine like nature and was treated with something approaching reverence. nature and was treated with something approaching reverencem is very special and it always changes with the light. first time in history probably but this building is nice and makes people happy. i came to germany especially to see this project, and i think it is great. for two weeks, the area has witnessed one continuous party, with scenes reminiscent of when the berlin wall came down six years ago. everybody who comes to see the project, there were 5 million people in two weeks in the reichstag, they know that they were seeing something

that would never happen again. last night was the final and the biggest party, with 100,000 people swarming around the building well into the early hours. today the dismantling work began in germany's former and future parliament building can blinking into the summer sunshine. after two weeks it is gone forever. cannot be repeated. something happened, it will stay forever in that particularly unique moment. at the world —famous that particularly unique moment. at the world—famous artist christo. and for ourfinal story we at the world—famous artist christo. and for our final story we go back more than 100 years to a time when the star still ruled russia. —— tsar. while the world was using black and white film, a pioneering russian photographer, so april coogan gorski, developed a new method of colour photography and used to document life in russia before the revolution. the results, you will see now, were stunning.

my my grandfather, sergey prokudin—gorsky, was one of the pioneers of colour photography it is a unique example of this quality of colour. this is close to a 100 year old production. at that time, you have to realise, but the only photographs in colour were taken indoors. and he was probably the first to do a lot of work outside. this is a very nice picture of the

marinsky canal, where he had done a lot of shots. you really feel you are seeing something natural. you can really feel that this guy was very so please, probably, to be taken. and at the same time, the composition of the picture is great. he was able to travel anywhere in the empire. he got permission from the empire. he got permission from the tsar to travel everywhere, even the tsar to travel everywhere, even the part which was very difficult to access. bukara is today in uzbekistan, but at the time it was tu rkesta n, uzbekistan, but at the time it was turkestan, which is really in the south—east of the empire, bordering iran, afghanistan and china. my grandfather was somebody who was

extremely open—minded. he was really a reticence man. —— a reticence man. —— renaissance man. in his work he tried to show the different category of people in terms of religion, origin. this is a jewish school with, i would say, teacher and some pupils. the images were obtained by projecting the free negative on glass in black—and—white through a colour lens for the projection, creating the colour. this is the original lab book of my grandfather

with a lot of technical description, and the more you learn, the more you find this person extremely attractive, quite fascinating. the grandson of pioneering photographer sergey prokudin—gorsky. that's all from witness history this month at the british academy. we will be back next month with more first—hand accou nts next month with more first—hand a ccou nts of next month with more first—hand accounts of extraordinary moments in history. but for now, from me, and the rest of the witness history team, goodbye. hello. friday brought more rain to areas which didn't need it.

another 10—15mm fell across shropshire. around 40mm of rain fell in around 12 hours in cardiff. meanwhile, across scotland, further snow. through the weekend, parts of the highlands could see another 20—30cm of snow, and all eyes this weekend are on this area of low pressure. this is storm jorge, which was named by the spanish met service. through the early hours of saturday morning we will see squally rain pushing east. cold air coming in behind, we could see icy conditions across parts of northern ireland first thing on saturday. but the main focus this weekend is the strength of the wind. gales, if not severe gales, across a large swathe of the uk, gradually easing down through sunday. wet and windy first thing across the eastern side of england. sunshine following. showers pushing in from the west, likely to be wintry. wet and windy across the northern isles through the afternoon. more persistent rain and maybe hill snow across northern england and into southern scotland. a cold day, particularly when you factor in the strength of the wind. temperatures not much higher than 6—7 celsius in places, and some gusty winds,

quite widely 40—50 miles an hour, but through the afternoon, some really strong winds developing across parts of wales, northern england and into southern scotland, where they could gust up to 75 miles an hour, maybe even 80 miles an hour on the western coast of scotland. also some heavy persistent rain for a time across northern england, southern scotland, northern ireland and also some snow once again over higher ground. through the early hours of sunday morning we keep this focus of rain and hill snow across northern england and southern scotland. to the north and south of this, clear spells, but squally, blustery showers. the strength of the wind should keep the frost at bay first thing on sunday morning. storm jorge slowly pulls away north through sunday. we're keeping an eye on this feature here, which will start to push outbreaks of rain into south—east england through sunday morning. two things to keep an eye on. the winds will be slowly easing down, but still some outbreaks of rain and snow across northern england and southern scotland. rain for a time perhaps across south—eastern england. we will need to keep an eye on the timings of that. between all of this, spells of sunshine, wintry showers, the wind slowly easing down, but it's still a windy day. certainly still feeling cold given the strength of the wind. we start to lose those severe

gales as we go through sunday. it's a blustery day and for most there'll be a mixture of sunshine and showers. that's the theme into next week. it won't be as windy. it will be somewhat drierfor a time. still, some showers around. goodbye.

welcome to bbc news — i'm krupa padhy. our top stories: the world health organization raises its assessment of the coronavirus threat to the highest level. we have now increased our assessment of the risk of spread and the risk of impact of covid—19 to very high. coronavirus causes another frantic day on global markets — hit with their worst week since the financial crisis. nato calls for calm as turkey hits hundreds of targets in northern syria —