this is bbc news. i'm rich preston. our top stories: climate activist greta thunberg leads thousands of young protestors through the streets of glasgow, demanding world leaders take stronger action at the cop26 climate summit. we at the cop26 climate summit. are tired of their bla blah. we are tired of their blah blah blah. our leaders are not leading. this is what leadership looks like. marilia mendonca, one of brazil's most popular singers, dies in a plane crash at the age of 26. prosecutors in georgia allege that ahmaud arbery, an unarmed black man killed last year, came "under attack" from three white men who are on trial charged with his murder. and here in the uk, resignations at yorkshire county cricket over the racism row which has engulfed the club.

welcome to our viewers on pbs in america and around the globe. the swedish climate activist greta thunberg has accused world leaders of deliberately postponing much—needed drastic action against global warming, and says they are fighting instead to keep the status quo. addressing thousands of young people at a rally in glasgow, she called the cop26 climate summit a "failure" and little more that a celebration of "business as usual". —— more than a celebration of "business as usual". the bbc�*s sarah smith sent this report from glasgow. a rare opportunity for protesters to loudly deliver a message almost within earshot of the global decision makers gathered in glasgow. greta thunberg, who inspired the fridays for future movement, says those leaders

have so far failed to deliver. young kids, inspired by greta, have drawn their own pictures of her. i know that she put out a sign and then everybody else started following her, just like this. how do you talk to children this age about climate change without scaring them too much? i don't have to — they themselves are aware. they know about plastic, about pollution, about air pollution. what do we need? climate “ustice! as the government announced measures to put climate at the heart of education, kids — mostly with their parents�* permission — were skipping school to take part in this youth protest. your sign says "now means now, not later". why did you write that? i wrote that because they're saying "we need to do this now. "we need to get this now. "we're going to sort this now." but they are not sorting it. they're just going to make

promises they can't keep. do you think that's what the world leaders at cop are doing? making promises that you don't think they're going to keep? yes, this has happened a lot of times before. people say they're going to do things and they don't make enough change to actually have an impact. i'm really hoping that the folk in cop, drinking their tea, - are listening, and they're listening to what we sayl and trying to make a change. do you not think they're trying to achieve the same thing as you, to lower carbon emissions and save the planet? yeah... i don't know. i think they are trying, i but we're trying harder. so far at this cop, there have been commitments to reverse deforestation, cut methane emissions and promise more money than ever before to tackle climate change. greta thunberg, who's at the front, doesn't seem very impressed with the progress of cop so far. what do you think? i think it's fair enough. you know, it's cop26. i'm 26 years old, it's been 26 years and no progress has been made and our carbon emission keeps increasing. we need action. on stage, ms thunberg dismissed cop26 as a pr exercise. this is no longer a climate conference. this is now a global greenwash festival.

a two—week—long celebration of business as usual and blah, blah, blah. they cannot ignore the scientific consensus. and, above all, they cannot ignore us, the people — including their own children. tomorrow, even larger crowds are expected, hoping to keep up the pressure before the final week of climate negotiations. sarah smith, bbc news, glasgow. some breaking news now. the brazilian country singer marilia mendonca has been killed in a plane crash on her way to perform in a concert in the south—east of the country. four other people — her uncle, her producer and two crew members — also died when the small private plane went down in a mountainous area. ms mendonca, who was 26, was a feminist icon in the country and won a latin american grammy in 2019. with me now is our reporter courtney bembridge.

what is the latest? the plane went down — what is the latest? the plane went down in _ what is the latest? the plane went down in a _ what is the latest? the plane went down in a mountainousl what is the latest? the plane - went down in a mountainous area not farfrom went down in a mountainous area not far from where she was due to perform at a concert this evening friday night in brazil. what we know so far is that her and four other people on board did die at the crash site. initially her staff said she was alive and well after reports started coming out about the crash but not long after that, there was vision emerging, showing the crash site and it emerged that this tragedy had happened. so an investigation is under way into what caused the crash but the growth rate is one of brazil's most contemporary singers. she won a latin grammy in 2019, as you said, and last year she was brazil's most listen to artist on spotify is a huge following, 39 million people following her on instagram, and shortly before this crash she posted a video of her climbing onto the private plane which ultimately crashed just a few hours after she posted that on twitter so this is something that the whole of brazil is watching

very closely and mourning her death. �* . ., , death. and what have we seen in the way of _ death. and what have we seen in the way of tributes? _ death. and what have we seen in the way of tributes? right - death. and what have we seen in the way of tributes? right from | the way of tributes? right from the way of tributes? right from the to - , the way of tributes? right from the tap. jair— the way of tributes? right from the top, jair bolsonaro - the way of tributes? right from the top, jair bolsonaro has - the top, jair bolsonaro has come out with a tweet and we can bring up that we do now, paying tribute. i will translate. is that the whole country receives in shock the news of the young country singer stop she was one of the greatest artist of her generation whom, with her unique voice, rhythm and munich, on the affection and admiration of us all. she was known as the queen of suffering because of the type of music she made, often highlighting the experiences of women in failed relationships and she started her career when she was just a teenager and she became very big in 2016 and has only soared, her population of popularity is only soared since then. another tribute from the brazilian footballer name are and we can bring that up for you now. he said thatjust simply i refuse to believe, i refused, and then anna moji of a crying person there. so tributes are starting to come

in and this is obviously a huge shock and we're still finding out about what caused the crash and what happened here. courtney, for now, thank you very much. the trial of three men accused of murdering a black man while he was outjogging has begun in the us state of georgia. the death in february last year of 25—year—old ahmaud arbery sparked protests across the us. further controversy has followed after a nearly all—white jury was selected for the trial in which the defendants have pleaded not guilty. our north america correspondent aleem maqbool is in brunswick, georgia, and sent this report. as the trial opened, video of ahmaud arbery�*s final moments was played. all too much for his mother, who let out a cry. sitting in front of her in the foreground here, the man who pulled the trigger. this was the video they were watching — three armed white men had pursued ahmaud, saying he resembled a burglary suspect. they cornered him and

shot and killed him. ahmaud arbery, an avid runner, had been jogging through this area just a short distance from his own home when the men decided tojump into their trucks and give chase. their own statements show one of the men involved in the killing of this 25—year—old used a racial slur as he lay dying. well, sadly, murals of unarmed black men who have been shot and killed are now dotted in towns and cities right across this country. but in ahmaud arbery�*s case, he didn't die at the hands of the police, but at the hands of people who believed they could act as an extension of law enforcement and do what they like — and that, after his death, appears to be precisely how the police treated them. that's fine, that's fine. there's body—cam footage that's too distressing to show, where we see ahmaud arbery writhing on the ground dying, not being given attention. throughout the encounter, police provide comfort

to the men who killed him. do what you need to do, man. that's. .. i can only imagine. they certainly don't appear to be treated as murder suspects. you're not putting me in cuffs, are you? no, no, no. why would you be in cuffs? well... in fact, it was only ten weeks later, after protests when the video of the killing taken by one of the men went viral, that travis mcmichael and his father greg and roddie bryan were even arrested. they were eventually charged and now go to trial. you can intentionally and deliberately kill another person in self—defence and not have committed murder. you would be not guilty. and it's still self—defence if they chased him? that's because they were attempting to execute a citizen's arrest. ahmaud's case has already led to the scrapping of a civil war—era citizen's arrest law in georgia. before the trial started, his mother told me she hoped somehow, good would come out of this tragedy. i hope that in losing ahmaud,

that people that look like ahmaud would be able tojog, they'd be able to run, they'd be able to do whatever and be free and not to be worried about being chased with guns and killed. for the trial — taking place in a city that's majority black — there will be only one african—americanjuror. and here, it appears easier to overturn laws than to change the attitudes that undoubtedly contributed to ahmaud's death. aleem maqbool, bbc news, brunswick, georgia. let's get some of the day's other news. it's emerged that a russian diplomat was found dead in october outside the country's embassy in berlin. his body has been returned to russia. foreign ministry officials declined to be drawn on a german press report that the diplomat was suspected of being an undercover agent for russia's fsb security service. der spiegel said the man had apparently fallen from an upper floor. it quoted the russian embassy as saying the incident

was a tragic accident. a former security adviser to french president emmanuel macron has been given a 3—year sentence for assaulting demonstrators and impersonating a police officer. alexandre benalla was caught on camera roughing up protesters during a demonstration in 2018. the court suspended two years of his sentence and ordered him to wear an electronic tag for the third. a memorial service has been held at washington's national cathedral for the late colin powell, who died last month. president biden was among those attending. powell was the first black us secretary of state, a retired army general and a former national security adviser. he died at the age of 84 due to complications from covid—19. the un security council has expressed deep concern about the intensifying conflict in ethiopia. it comes as nine rebel groups formed a new alliance, aimed at removing the current government of prime minister abiy ahmed.

the year—long war has left over 400,000 people facing famine—like conditions. our africa correspondent catherine byaru hanga has this report. in washington, dc, a coalition of armed groups and political movements announce they want to remove ethiopia's government. many of them come from historically marginalised ethnic groups. now they've partnered with the stronger tigray people's liberation front, which has been fighting federal forces for a year. the next step would be to organise ourselves and totally dismantle the existing government, either by force or by negotiation, whatever they wish. and then set up a transitional government as soon as possible. but back home, the government they oppose, led by prime minister ahmed, is defiant and dismissed the alliance

as a publicity stunt, pushing back its claims as undemocratic. it's quite worrisome that many allegations being lodged against the ethiopian government are being done so in a matter to discredit a democratically elected government that has majority support. this majority support was demonstrated in a landslide victory obtained following the 2021 elections. ethiopia's government continues to be tested. it's lost significant towns and cities to tigrayan rebel forces who are advancing towards the capital. they claim to hold territory 3km north of one of africa's biggest cities. on tuesday, the government declared a state of emergency and urged citizens to arm themselves against its opponents. but there are fears the tough measures are being used to detain ethic tigrayans because of claims they support the tplf rebels.

translation: police took my brother with his friends - while they were having dinner in a restaurant. all of them were from tigray. they usually ask you to show id and if your name and other details on it indicate that you are from tigray, they immediately take you to prison. it's hard to speak at any place in the city because we don't feel safe. the government says arrests were only made after obtaining evidence of illegal activities. ethiopia's year—long war has created one of the world's worst humanitarian crises. over 7 million people need emergency aid and 400,000 are on the brink of famine. yet the warring sides are not listening to international calls to end the war. catherine byaruhanga, bbc news. stay with us on bbc news. still to come: drug company pfizer says its new covid treatment significantly cuts the risk of hospitalisation and death for the most at—risk patients.

the israeli prime minister, yitzhak rabin, the architect of the middle east peace process, has been assassinated. a 27—year—old jewish man has been arrested and an extremistjewish organisation has claimed responsibility for the killing. at polling booths throughout the country, they voted on a historic day for australia. as the results came in, it was clear — the monarchy would survive. of the american hostages, there was no sign — - they are being held somewhere inside the compound — - and student leaders have threatened that should . the americans attempt. rescue, they will all die. this mission has surpassed all expectations. voyager one is now the most distant man—made object anywhere in the universe, and itjust seems to keep on going. tonight, we prove once more that the true strength of our nation comes not from the might of our arms or the scale of our wealth, but from the enduring

power of our ideals. this is bbc news. the latest headlines: swedish activist greta thunberg has branded the cop26 climate conference a "failure", describing it as a global greenwashing festival. marilia mendonca, one of brazil's most popular singers, dies in a plane crash at the age of 26. the pharmaceutical company pfizer says a clinical trial of a new pill to treat covid—19 shows that the drug is highly effective. the product is called paxlovid, and is reported to have achieved an 89% reduction in the risk of hospitalization or death — that's among adult patients with coronavirus who are at high risk of progressing to severe illness. president biden says

the drug has huge potential. last night we received promising news about any potential and potent covid treatment. phil —— appealed developed by pfizer that might dramatically reduce the risk of hospitalisation or dying if you take a just after your info. if authorised by the fda, we may soon have pills that treat the virus of those that become infected. have already secured millions of doses and it will be another tool in our toolbox to protect people from the worst outcomes of covid. we can now speak to dr celine gounder who's an infectious disease specialist and epidemiologist at nyu and bellevue hospital. celine is also a member of the biden—harris transition covid—19 advisory board.

tell us a bit more about this drug. this drug could pfizer have developed, paxlovid, is what we call an antiviral drug, specifically a protease inhibitor so it's related to antiviral drugs that we use to treat hiv or hepatitis c, for example and it's important to understand the mechanism and action of paxlovid is different from that of the merck oral pill for covid which is called molnupiravir, they have different mechanisms for action but what they have in common is they are only effective if they are given early in the treatment of the course of the disease, the numbers for the pfizer's drug paxlovid is impressive, 85% effective in terms of preventing hospitalisation or death but that's only if given within three days of developing symptoms, so we need to be fussed about diagnosing and starting people on treatment for these drugs to have an impact. for these drugs to have an

im act. �* . ~ for these drugs to have an imact. �* ., ~ ., impact. and what kind of patients _ impact. and what kind of patients are _ impact. and what kind of patients are going - impact. and what kind of patients are going to - impact. and what kind of. patients are going to benefit from this drug was to mark in the studies, but the study of the studies, but the study of the pfizer drug paxlovid as well as merck's molnupiravir, they focused on people who are at high risk for developing severe covid, so maybe they were obese or had diabetes or other chronic underlying medical conditions. but they were not _ medical conditions. but they were not in _ medical conditions. but they were not in the _ medical conditions. but they were not in the hospital, - medical conditions. but theyl were not in the hospital, they were not in the hospital, they were being diagnosed as outpatients and then were being started on treatment, in the case of the pfizer drug, within three days of symptom onset and the merck drug, within five days of symptom onset. we heard president biden _ days of symptom onset. we heard president biden signalling - days of symptom onset. we heard president biden signalling his - president biden signalling his support for the drug. what is the next step in terms of licensing and getting it approved? 50 licensing and getting it approved?— licensing and getting it approved? so the biden administration - approved? so the biden administration has - approved? so the biden i administration has already placed orders, purchase orders for the drug so really we have some millions of doses of the drug earmarked for use you in the united states. pfizer is submitting its drug to the fda

for emergency use authorisation and depending on how quickly they are able to turn that around, i suspect that in over around, i suspect that in over a month or so, we will see some movement as to scheduling a date for the fda to weigh in on whether they are going to issue that authorisation.— that authorisation. doctor cefine that authorisation. doctor celine gander _ that authorisation. doctor celine ganderjoining - that authorisation. doctor celine ganderjoining us l that authorisation. doctor- celine ganderjoining us from new york, thank you very much for being with us, good to have you on the programme. here in the uk, the row over racism at yorkshire, one of english cricket's most famous clubs, has intensified with the resignation of its chairman. the worst crisis in the club's history has been sparked by a year long investigation that found former player azeem rafiq had been the victim of racial harrassment and bullying. but no disciplinary action was taken. former england captain michael vaughan was one of those named in the investigation — accused of making a racist comment to a group of asian

players — something he strongly denies. here's our sports editor dan roan. the racism that cricketer azeem rafiq suffered at yorkshire has plunged the county into an unprecedented crisis. today, as the fallout continued, the chairman bowed to intense pressure and in his first interview after announcing his resignation, roger hutton told me that the club had let their former player down. i am sorry that he did not have his allegations investigated in 2018. i am sorry that it has taken so long. i am sorry that ultimately the club has not shown the right contrition. i have not personally met anyone that i would consider a racist at yorkshire county cricket club. what i have seen is a culture that is locked in the past. amid more resignations at headingley today, hutton blamed senior management who, he said, resisted change after a report found rafiq had suffered racial harassment. there was a failure by many in the club to accept its findings or understand them or recognise them and since then that has been incredibly frustrating. the england and wales cricket board punished yorkshire by banning headingley from hosting england matches,

but hutton said it should have done more to support the investigation. i heard a statement last night from the ecb that they repeatedly offered to help me and yorkshire county cricket club do this investigation. that couldn't be further from the truth. yorkshire batsman gary ballance had admitted repeatedly using a racial slur towards rafiq about his pakistani heritage, but a panel regarded it as friendly banter and no action has been taken against any member of staff, sparking outrage. do you accept that conclusion that they reached? that it was friendly banter? is that how you would deem that expression, that phrase, towards a colleague? no, if you are using that language, it is completely unacceptable... so why was there not action taken? because you have not seen the context of the whole of the report and the club had legal advice that actually that was not something that you could take disciplinary action in relation to. is ballance the only current member of staff that there has been an allegation upheld against? no. former england captain

michael vaughan, meanwhile, has become the second player to reveal he is named in the report, rafiq alleging that he had made a racist comment towards a group of asian players in 2009. vaughan denies the claim, but today one of those players said he had heard the alleged comment. a prominent pundit, tonight he was stood down from his radio show. this all comes at a time when cricket authorities are trying to make the sport more diverse and some fear that this damaging episode may send the game backwards. it is more about trying to get systemic change in a club like yorkshire, which,

change has proven to be very difficult and the club, i think, has failed to evolve quick enough in the way that society is changing and our attitudes towards race and racism. this has been a devastating week for the most successful club in county cricket, but the ramifications of this remarkable saga now extend well beyond headingley. another breaking story and football has confirmed their former player savi has agreed to become manager. —— manager. he has been managing al saud in saudi arabia but he returns to a club where he made 800 appearance, winning 25 trophies and four champions league titles.

a german state has handed back priceless mayan artefacts to the ambassadors of guatemala and mexico. some of the objects date back to 250 ad. they're thought to have been looted by tomb—raiders from pre—colombian cities in what are now guatemala and mexico. they then found their way to the cellar of a private collector in eastern germany, where they were discovered in late 2020. the handover is the latest in a recent trend of european countries returning looted cultural artefacts to their countries of origin. 3,000 baby river turtles native to the amazon rainforest have been released into a river in peru after hatching from eggs kept on artificial beaches as part of a conservation effort. the river turtles are considered "vulnerable" and have for many years been killed for human consumption, or kept as pets. that's it from us for now.

bbc.com/news for more. you can reach me on twitter — i'm @richpreston. hello there. after what was, at times, quite a chilly week of weather the weekend is getting off to a relatively mild but relatively cloudy start. you can see that cloud spilling in from the west on our earlier satellite picture. with that, though this feed of westerly winds and mild air certainly making its presence felt through the day ahead. so we can sum saturday's weather up like this, it will be mild, it will be turning wendy though. increasingly windy, particularly in the north of the uk and for some there will be some outbreaks of rain. courtesy of this area of low pressure and this frontal system pushing in from the northwest. some quite heavy bursts of rain across the western side of scotland, that ran more generally pushing south across scotland and northern

ireland through the morning. that rain getting down into parts of north—west england and north wales during the afternoon. ahead of that, eastern and southern counties of england will stay predominantly dry, but rather cloudy. limited sunny spells. the skies will brighten in the north—west of the uk, but with some showers and some windy weather later in the afternoon. top temperatures 11 to 1a degrees. it will be mild out there. during saturday night with see this band of cloud and patchy rain pushing across the south. more pushing into the north—west where it'll be turning very windy indeed. exposed spots in northern scotland seeing gusts of wind in excess of 60 perhaps 70 mph. that could cause some disruption. relatively mild night once again, eight, nine,

ten or 11 degrees to take us into sunday morning. as we start sunday, low pressure passing to the north of the uk, all the white lines, isobars squeezing together. indicative of a windy start. especially in northern scotland, we will keep some showers going through the day. most of the areas will be dry and there is a decent chance of seeing some spells of sunshine through sunday afternoon. temperatures may be down a little, but still quite mild. 10—13 degrees. and then as we head for the coming week, high—pressure will try to hold on towards the south of the uk. whereas we will see frontal systems from time to time pushing across northern and western areas. what that means that the driest of the weather we found towards south and east, it closest to that area of high pressure. more chance of rain at times towards the north—west but for all of us it is going to remain mild.

welcome to bbc news.

i'm rich preston. our top stories: climate activist greta thunberg leads thousands of young protestors through the streets of glasgow, demanding world leaders take stronger action at the cop26 climate summit. she said the summit amounted to a global greenwashing festival and was a publicity stunt. marilia mendonca, one of brazil's most popular singers dies in a plane crash at the age of 26. the latin grammy winner was brazil's most streamed artist on spotify last year and was flying to perform in the south—east of the country. the un security council has expressed concern about intensifying conflict in ethiopian. the year—long war has left over 400,000 people facing famine —like conditions.

the