this is bbc news. the headlines: spain's prime minister, pedro sanchez, has banned people from leaving home unless they need to buy essential supplies

and medicines or to go to work. it comes as his wife maria tests positive for covid—19. the country is europe's worst hit state after italy. france has brought in strict measures after seeing a sharp rise in infections. prime minister edouard philippe has ordered bars, clubs, cafes a nd restau ra nts, cinemas and most shops to close. as many people as possible are being asked to work from home while schools will close from monday until further notice. the united states has added britain and ireland to its flight ban on european countries as it tries to limit the spread of covid—19. vice—president mike pence says internal travel restrictions are being considered. president trump has tested negative for the virus. to climate change now, and a warning that efforts to tackle the issue by simply planting trees may not be the answer.

scientist are warning that the rush by governments and businesses to create new forests could easily go wrong. our science editor david shukman reports. a forest in staffordshire transformed into hi—tech laboratory. researchers who are investigating how trees use carbon. and it's difficult to find out. in an unusual experiment, extra carbon dioxide is piped to the trees to create the kind of atmospheric conditions expected in the middle of the century. and instruments matter how the forest we are. we need to be very, very careful about what the effect of c02 is. the scientist in charge says there's still a lot to learn and he worries that governments and are rushing to plant trees is an easy answer to climate change. if you try news trees to tidy up the mess we are making through emissions, you are putting those trees into a very rapidly changing climate and they will struggle to adapt. —— try

and use trees. this device tracks the movement of carbon dioxide. in a healthy forest, gases not only absorbed by trees, but some is released as well. what scientists you are finding out is that the way carbon flows into a forest and out of it is a lot more complicated than you might think. so if mass tree planting is meant to be a solution to tackling climate change, the trees are going to have to be monitored and cared for over notjust decades but maybe centuries as well. of all the challenges, the task of planting is the simplest. shelby barba from canada can do an amazing 4000 trees and a day. people talking about planting millions, billions of trees around the world. is it possible, do you think, physically? it's definitely possible with the right amount of people, the right group of people. i've personally in three is planted just over half a million trees.

0nce planted, the trees need to survive and experts are mixing different types to minimise the risks of disease. it's a bit like making sure you don't put all your eggs in one basket, you are spreading out your risk and then if one part of that woodland fails for whatever reason, it gets disease or can't tolerate future climatic conditions, there are other parts of the forests that are healthy and able to fill in those gaps. suddenly there is momentum to plant trees on a scale never seen before. so what matters is doing it in a way that ensures the forests thrive so they really do help with climate change. david shukman, bbc news. now on bbc news, coronavirus is now spreading around the world. but the outbreak began in the chinese city of wuhan, which was locked down in late january. with exclusive access to two film—makers who've been capturing life under lockdown, here's our world.

wuhan, central china, with a population of 11 million, it is bigger than greater london. this is where the coronavirus outbreak began, last december. injanuary, as it started spreading across china, the government took an unprecedented step, to lockdown wuhan. two residents began to film.

police barricades ring the city. all roads out are shut. lin wenhua, a travel blogger, heads out with his camera.

lin has lived in wuhan his whole life and knows the bustling city like the back of his hand, but today it is empty. many factories, offices and shops are closed. the lockdown is a huge gamble to stop the spread of the virus to the rest of china by shutting off wuhan. residents do not know what it will do to infections within the city and there is no word on when

it will end. two dozen people have already died. wuhan central hospital is the epicentre of the outbreak. it is under unprecedented strain. li ting is a nurse in the emergency department. she has been treating patients for several weeks and shared her concerns with her husband, cai kaihai.

but the hospital needs workers like li ting. despite herfears, she believes it is her duty to carry on. the government has shut all public transport — it has paralysed the city. lin wenhua has been contacted by a doctorfriend with a request for help.

even those on the frontline fighting the virus are unable to get to work. lin arranges to pick up his first passenger, a nurse.

after driving several doctors and nurses to work, lin drops in on his friend, lil lil. it is chinese new year.

families often travel across the country to be together at chinese new year. the lockdown was implemented to avoid this epic movement of people and stop the spread of the virus beyond wuhan. the people's liberation army now arrives in wuhan. construction starts on two new mega hospitals to be run by the military. 40,000 medical workers from around china are drafted in and,

the people's liberation army now arrives in wuhan. construction starts on two new mega hospitals to be run by the military. 40,000 medical workers from around china are drafted in and, to solve the transport problem, the government organises buses and hotels for hospital staff, but doctors have struggled to understand the virus and protect themselves from it. many are becoming infected. cai takes his wife, li ting, to her shift in the emergency department. she is not feeling well. soon after, she calls him.

li ting is told the hospitals do not have space to treat her so, like thousands of others, she is sent home to self quarantine. avoiding infection requires extreme measures.

it has been over a week since the lockdown. new infections have grown by 500%. there are reports that people with the virus who have stayed at home are infecting their families and neighbours, and that some are dying in their homes but, with hospitals full,

the self—quarantine policy continues. cries. li ting has now had the virus for five days. but her condition has worsened. cries.

until a bed becomes available, the couple are stuck at home. 10,000 wuhan residents have become infected in the last week. the two new mega hospitals have opened. sports stadiums and conference halls have been converted into giant mass—confinement centres. everyone suspected of having coronavirus now has to be in hospital. only a country with china's command system could react

this fast. lin wenhua is helping to deliver medicine. although there is currently no cure, the government has advised that hiv drugs may help ease the symptoms. hiv patients have donated their drugs to people with the virus who cannot get them through the hospitals.

breathes heavily.

nurse li ting needs to go to hospital. it is the first time she has been out of the house for 12 days. the doctor is checking her lungs with a ct scan.

they have to go home. cai desperately calls the hospitals asking for an available place but no luck. in bed, li ting speaks to him by phone in the next room. the next day, li ting is finally admitted to hospital.

lin has now driven over 1000 miles around wuhan. there are thought to be up to 50,000 volunteers like him. it is a lifeline for the city. but they are exposing themselves to extreme risk.

but lin has finally hit a dead end. in a bid to self isolate, residents have cut off the entrance to their district. the lockdown has slowed the spread to the rest of china. but in just one month, nearly 50,000 people have become infected in

wuhan. now, the government escalates the lockdown. it orders every residential complex must close its gates. cai goes to pick up a delivery. food supplies are now organised by the management of each apartment block. anyone who tries to leave risks being arrested. fewer new infections are now being reported. li ting is still in hospital but she is finally on the mend.

lin wenhua is also now confined to his complex. he is unable to carry on his volunteering work and he is having to miss a big family event.

hello. a little bit of rain on the way for sunday. it's already raining across some parts of the country, particularly across northern and western areas. but the chances are that you'll see some sunshine a little bit later on in the morning and the afternoon.

now this is the weather centre that has been approaching us in the last few hours. it's brought wet weather to parts of scotland, western areas as well. this is the rainfall through the early hours of sunday, you can see, across parts of wales, the south—west too. but here we have south—westerly winds and so it's not cold at all. temperatures around nine or ten. the winds blowing out of the north in scotland, so a little bit colder here and even cold enough for some wintriness across the hills of scotland and the mountains too, of course. now, the forecast for sunday suggests that that rainfall will linger perhaps into the afternoon across the south—east and east anglia. but the vast majority of the country is actually in for a fine day, so the sun will eventually come out in places like birmingham, liverpool, york, newcastle as well, and certainly some fine weather there along with many parts of northern ireland and central scotland. now monday, we see two areas of weather. 0n the one hand, we have high pressure building in from the south—west, but also a low pressure is sending

a weather front in our direction, but the high pressure will be more dominant across the uk on monday and that means calm winds and quite possibly scenes like this outside of towns. so a bit of mist around with some frost across many parts of england and wales, maybe eastern scotland too, but in the north—west of the country, here it's a different story. low pressure influencing our weather, stronger winds, perhaps gale force in the western isles and some outbreaks of rain. but the vast majority of us — a fine day on monday. now, that weather front is going to move through monday night into tuesday and it's actually going to introduce, again, cloud and possibly some rain across the west and the north—west of the uk. a little bit messy, i think, the cloud amount or forecasting the cloud amounts on tuesday. there could be a bit of cloud here. but more especially, i think, in the north—west of the uk. basically, the further south and the east you are on tuesday the better the weather will be and very mild. look about, 14, 15, 16 degrees. towards the end of the upcoming week and into the weekend,

it looks as though the weather's going to settle down, with high pressure building. a lot of sunshine on the way.

this is bbc news. welcome if you're watching here in the uk or around the globe. i'm maryam moshiri. our top stories: spain orders residents to stay at home unless they are purchasing essentials or going to work. the prime minister's white is among a surge in coronavirus cases. “— white is among a surge in coronavirus cases. —— wife. france ramps up its response. cafe ‘s, restaurants, cinemas and nightclubs and all non—essential businesses have closed. away from europe, the philippines ramps up containment efforts has cases there pass 100. metro manila on lockdown. travel restrictions are now in place on some 13 million people in this city, as the philippines government attem pts the philippines government atte m pts to the philippines government attempts to slow the spread of covid—19. attempts to slow the spread of covid-19. we look at the impact of coronavirus on religious practice around the world.