during a black lives matter protest last year breaks down as he gives evidence. and more than 4 million people have shared a post on instagram in the belief that for each share, a tree would be planted. but was it all it claimed to be? we'll be hearing from the man behind the trend. welcome to our viewers on pbs in america and around the globe. in an unexpected move, the world's two biggest producers of greenhouse gases, the us and china, have agreed to cooperate more closely on climate issues over the next decade. the countries issued a joint statement at the cop26 conference in glasgow, pledging to help keep alive the hope of limiting global temperature rises this century to 1.5 degrees celsius. but they didn't say whether they'd back a draft international agreement, calling on all nations to reconvene next year with tougher carbon cutting targets. our science editor david shukman has the latest. can the world agree to slow down the release of the gases heating the planet? can it do what it takes to reduce the melting of the polar ice? and will this be enough to limit the rise of the sea? with the conference now entering its final days, delegates are trying to find common ground, and the uk, as host, has come up with a draft of a possible agreement. seven pages of text, welcomed as a first step by some, but criticised by many. the words are almost meek and mild in many places, and i think, you know, the world is on fire. we've seen the australian wildfires, we've seen koalas being burnt alive. we need to make sure that we've got power and proactive commitments on the table. any document like this is bound to be a compromise, so it calls for the first time for coal to be phased out — the dirtiest fossil fuel — but doesn't give a date. it pushes for 1.5 degrees celsius to be the limit of global warming, but currently, no—one is on course to achieve that, and it urges countries to update their climate plans not in 2025, but far sooner, in fact next year, but there is no obligation. it needs to be really clear. there's no room for ambiguities and fudges. i see in this latest text, there's a lot of "urging" and "calling for", that kind of soft language, and it will need to be sharpened up, otherwise it will be very difficult to claim that this summit has succeeded. so the prime minister has stepped in, briefly, but, faced with an uphill struggle, he's now trying to manage expectations. the cop26 summit here in glasgow is not going to fix it in one go. we're not going to arrest climate change right here, right now, that isjust impossible, and i think everybody has got to be realistic about that, but there is the possibility that we will come away from this with the first genuine road map for a solution to anthropogenic climate change. and that possibility was given a boost when china's top negotiator made a surprise announcement of a joint climate plan with the united states. the world's two biggest polluters agreed to reduce methane, a highly potent greenhouse gas, a positive signal of cooperation. the united states and china have no shortage of differences, but on climate — on climate — cooperation is the only way to get this job done. we will soon see what that adds up to in this last phase of the talks, where china is among industrial giants worried about brakes on its development. and others, like madagascar, victims of climate change, are desperate for this conference to get them help. that was our science editor with that report. kevin rudd is the former australian prime minister and now the president of the asia society, which has been working on global agreements god forbid we end up with another climate denying president in the white house but under the barden —— biden administration, there is clear commitment to act domestically and internationally, hence why kerry was able to do what he did today. for beijing, the arc of history bends slowly towards climate action. i remember copenhagen where china was actively in the business of blocking any form of international agreement. paris, they stepped up to new forms of agreement and now, what you see with this re—energisation of their bilateral collaboration with washington, looking at sectoral specific initiatives, even in methane, forestation and regulatory standards, which i assume refers to electric vehicles as well, this is a positive step forward, so not perfect but i would certainly give it more than a six out of ten on the richter scale of achievements. president xi didn't go to cop, china didn't sign up to the pledge to shift away from coal. it's going carbon neutral by 2060, a decade behind most other countries. it didn't sign up to the big methane agreement early on in the summit. is it doing enough at home to limit its own emissions? the rest of us would say, internationally, no because china is now the world's largest emitter and by mid—century, cumulatively will have more greenhouse gases in the atmosphere coming out of china than the united states, when you take the historical emissions into account. but the bottom line is the trendline in terms of chinese action is like this — i would prefer it was like that, but it is like this, and that is better than we have been before. 0n methane in particular, what i find significant is that china, having excluded its name from the international agreement, which was put forward at cop recently, nonetheless explicitly identifies methane is an area which will now work on with the united states in the year ahead. so, frankly, full marks tojohn kerry and his chinese counterpart to pull this out of the ashes, and remember, we are probably less than a week away from a bilateral summit between xijinping and president biden. hopefully that will further stabilise the us chain —— china relationship and create more political space for active approaches to this climate change agenda in both capitals for the 12 months ahead. let's get some of the day's other news. the us plane maker, boeing, has admitted liability for a crash two years ago in ethiopia of one of its 737 max aircrafts. all 157 people on board were killed. in a submission to a court in chicago, boeing acknowledged that the plane was unsafe. the firm said it was committed to ensuring that the families of those who died were compensated. the un security council has expressed deep concern at the latest violence in myanmar between the ruling military and opposition groups. in a rare statement agreed by all its members, the security council called for an immediate end to fighting and urged the military authorities to exercise utmost restraint. a french court has sentenced a man who killed an 85—year—old jewish woman to life in prison. yacine mihoub was convicted of murdering mireille knoll in her paris apartment three years ago during a botched robbery that was motivated by anti—semitism. she was stabbed 11 times and her body set alight. the german chancellor angela merkel has told president putin that russia must stop what she called the "inhumane" exploitation of the migrant crisis on the border between poland and belarus. thousands of people have massed in the area wanting to cross into poland and enter the european union. poland's prime minister has accused belarus of "state terrorism" in its handling of the crisis. 0ur correspondent nick beake sent this report. for those who'd hoped to find a new life safe in the european union, there's a grim realisation this could now be home — trapped between belarus and poland. the bbc was sent these pictures as journalists and, crucially, aid agencies are being kept away. it is very, very bad. we managed to contact ilias, who was a scientist in iraq. he wants eu member poland to let them through. my message is, i want open the border to poland. why should poland open the border to you? one day, two day, three day, after, have died. you fear that people will die? yes. poland has been accused of pushing back migrants illegally. but it wants to highlight this — belarusian troops appearing to force migrants along the border, the polish accusing belarus of terrorism, masterminded by russia. and tonight, angela merkel appealed directly to moscow. translation: you are all following _ these disturbing images. i had russian president vladimir putin on the phone today and i asked him to take action with president lukashenko because people are being used here. but russia has hit back, claiming the eu is provoking belarus. moscow released this footage which, it said, showed two bombers being sent to patrol its ally�*s airspace in a show of solidarity and strength, as international tensions rise from this border chaos. this huge forest, called bialowieza, is one of europe's oldest woodlands, but it's now the epicentre of the continent's newest migrant crisis. thousands have been trying to make their way from belarus, through these trees, to here in poland. and many more are set to follow, determined to take their chances in this wilderness, if it means reaching eu soil. because in belarus's capital, minsk, more families were preparing to head to the border after being welcomed by president lukashenko's regime, undeterred by the spiralling misery tonight in the makeshift camps that soon awaits them. nick beake, bbc news, on the poland—belarus border. a rust film crew member who witnessed the fatal on—set shooting of a cinematographer has filed a negligence suit against actor alec baldwin and the producers. in the lawsuit, chief lighting technician serge svetnoy, accused the producers of rust of "negligent acts and omissions," stating "there was no reason for a live bullet to be on set." halyna hutchins was shot and killed by baldwin during rehearsals for the western in new mexico. directorjoel souza was injured in the incident. stay with us on bbc news. still to come, a million dollars better off: we meet the teacher who's just won a unesco—backed global prize. the bombastic establishment outsider donald trump has defied the pollsters to take the keys to the oval office. i feel great about the election results. i voted for him because i genuinely believe that he cares about the country. it's keeping - the candidate's name always in the - public eye that counts. success or failure depends not only on public display, j but on the local- campaign headquarters and the heavy routine workj of their women volunteers. berliners from both east and west linked hands and danced around their liberated territory. and with nobody to stop them, it wasn't long before the first attempts were made to destroy the structure itself. yasser arafat, who dominated the palestinian cause for so long, has died. palestinian authority has declared a state of mourning. after 17 years of discussion, the result was greeted with an outburst ofjoy, leaving ministers who long felt only grudgingly accepted among the ranks of clergy suddenly felt welcome. this is bbc world news. the latest headlines: a surprise move as the world's biggest economies, china and the us, agree to a joint approach to climate change. migrants on the belarus border continue to suffer as they try to enter poland. russia is accused of manipulating the situation for its own ends. a us teenager charged with shooting three people during civil unrest on the streets of wisconsin last year has taken the stand in his own defence. kyle rittenhouse broke down in tears, forcing a brief recess, as he described how he was "cornered" by several men and acted in self—defence. the teen has pleaded not guilty to all charges against him. i was cornered from in front of me with mr ziminski and there were... sobbing there were three people right there. sobbing 0ur correspondent peter bowes has more detail. kyle rittenhouse had gone to the town of kenosha two days after the police shooting of jacob blake, a black man. that had prompted black lives matter protest that had gone on for about 48 hours. kyle rittenhouse says he went there to protect local property, specifically some car dealerships. he was armed. we had a semiautomatic rifle with him. he said that was for his own protection and see never intended to use it, but during the course of events he said he felt threatened. he says he could hear people shouting out, "get him, get him!" there is also videos that he had been shouting out "friendly, friendly, friendly". he says he was confronted by one of the two men he ended up shooting, one of the men threatened him after he hit him in the head with a skateboard and another pointed a gun at his face. as we have just seen, he broke down in tears while providing his testimony. the trial had to be put on hold for a short while. and then they came back and he was cross—examined by the prosecutor. and that led to the judge actually criticising the prosecution for the line of questioning and he said the prosecutor had doubted the sincerity of the tears that everyone had just witnessed while he was on the stand. and he also referred to a statement he had made in social media that he wanted to be famous, this is kyle rittenhouse, and also reference to a photograph that prosecutors they showed him standing next to some extreme right—wing protagonists. the judge said that that scope of questioning was beyond the questioning that had been agreed and was allowed for that stage of the trial. peter, when does the trial go from here, there had been some suggestions that there might be claims of a mistrial, which means it goes no further for mr rittenhouse. yes. after that confrontation, if you like, between the judge and the prosecution it was the defence that made a call for a mistrial and the judge has yet to rule on that. so we don't know where that is going to go at the moment. it seems for now the trial will continue. kyle rittenhouse testifying on his own behalf. and that is a very unusual move for a defendant in a very serious case like this, it is seen by lawyers as being quite risky in legal terms, you don't know what is coming from the cross examination by the lawyer on the other side. but he has testified on his own behalf. he is the third defence witness. and, for now, the trial continues. a heartwarming tale to you about a teacher who got a grand reward for good work. traditionally, an apple does the trick. but one teacher has picked up something more — a million—dollar prize. mark lobel has studied the win. the winner of the global teacher prize 2021 is... from thousands — teacher prize 2021 is... from thousands of _ teacher prize 2021 is... from thousands of teachers - teacher prize 2021 is... from j thousands of teachers around the world... thousands of teachers around the world. . ._ the world... keishia thorpe from the — the world... keishia thorpe from the united _ the world... keishia thorpe from the united states - the world... keishia thorpe from the united states of. from the united states of america. from the united states of america-— america. propelling this jamaican _ america. propelling this jamaican born _ america. propelling this jamaican born track- america. propelling this jamaican born track and | america. propelling this - jamaican born track and field jamaican born track and field scholar turned maryland high school english teacher to stardom. this pandemic hit year. as she talks up the annual member prize. the students _ annual member prize. the students especially - annual member prize. the students especially that annual member prize. tta: students especially that i teach, immigrant and students especially that i teach, immigrantand refugee students, just like myself. it was an immigrant student in the usa because i'm able to relate to them because i'm able to understand the struggles and know what their needs are, gives me a great opportunity to work with them inside and outside of the classroom. she redesigned — outside of the classroom. she redesigned the _ outside of the classroom. she redesigned the english curriculum for herfinal redesigned the english curriculum for her final year students to make it culturally relevant to them, helping many to go on and win millions of dollars in scholarships as well. but the vibrant equitable education champion wasn't the only winner this year. over to x—men movie star hugh only winner this year. over to x—men movie star huthackman. so, i'm delighted to announce that winner of the inaugural global student prize is jeremiah from sierra leone. congratulations, jeremiah, you have made an enormous difference to your community and far beyond. the 21-year-old durham university _ durham university sustainability student one $100,000 for creating a device that uses kinetic energy from traffic and pedestrians to generate clean power and combat energy poverty. tt’s generate clean power and combat energy poverty-— energy poverty. it's amazing, it's wonderful. _ energy poverty. it's amazing, it's wonderful. words - energy poverty. it's amazing, it's wonderful. words can't i it's wonderful. words can't express how i feel right now about this.— about this. one thing this ear's about this. one thing this year's stars _ about this. one thing this year's stars did _ about this. one thing this year's stars did clearly i year's stars did clearly express was a magical energy of their own. mark lobel, bbc news. now, if you've been on social media over the last few days, you might have seen or potentially even posted yourself a picture of your pet, in the belief that by doing so the plant a tree company would — as their name suggests — plant a tree in response. more than four million instagram users attached the promise to a post of their pet, meaning that those behind the trend are on the hook for more than four million trees. but are they actually going to be planted? earlier i spoke to the man behind the account, zack saadioui, founder of the plant a tree company. no, they have not. they started here though. i've got one tree planted right here. why haven't there been 4 million trees planted? we simply had no clue it was happening. we made the post a week ago, the day after the new add yours sticker rolled—out and we posted it for like 5—10 minutes and we realised... so initially we thought it would be a fun way to plant maybe 50—100 trees, but instantly we realised it was getting pretty big. so we instantly deleted it. and didn't hear anything from it for a whole week, and then came monday and we saw demi lovato had posted and i thought to myself, "can this really be my post?" and i checked it and it happened to be my post and i was pretty awestruck. we had no clue that it blew up. you say you are surprised, but this isnt�* the first this has happened to you, the same thing happened back in 2019, didn't it? are you referring to the australian wildfires? i'm referring to the pledge to plant a tree every time users shared a post. then there was also the australian wildfires and the black lives matter movement as well. you have been involved in these viral trends before and not planted trees. yes. so we have been involved in viral trends and every single time we have donated enough that we promised. this time, though, we deleted the post 10 minutes in, and this new feature of instagram apparently doesn't leave once you delete it and it keeps spreading. so it was completely out of our control. we didn't mean for it to get big at all. we had no clue it would. and a week later, it happened to be big. when you promised to donate money to the black lives matter movement a few years ago, did that happen, did you donate money? yes, we did. and now you're asking for money for planting these trees because you say you didn't expect it to take off in the way it did. what happens to people who give money for this campaign? 0h, no—one has given me money. i am not asking for money. the money is going directly to trees for the future. and they are actually planting the trees. all the money is going to them. they are a legit organisation and a lover they do. that is why we chose them. we started an instagram fundraiser. basically, yes. will you be doing this again? doing what? doing one of these posts to encourage people to share photos or share a post in order to plant a tree or for some other campaign? you have seen how quickly this one took off. it's clearly good for you, good for a brand, good for a company. it's good to be involved with you on this front. actually, no. we're getting a lot of hate from this, even though it was completely out of our control. instagram made a statement that, yes, once it's deleted, is still spreads. it was brand—new, the day i posted, the new feature came out the day before that. we had no clue. instagram made a statement that said after you post it, it keeps spreading. i think some good came out of this. we have raised over $30,000 so far for trees. we're not touching me money. it is going directly to the organisation i mentioned, and hopefully the user to plant a lot of trees. zack saadioui there. you can get more on all our stories on the bbc website and you can download the bbc news app. you can reach me on twitter. i'm @rich preston. from me and the team thank you for your company. we will see you next time. bye—bye. hello. temperatures fell back closer to average again in scotland and northern ireland on wednesday. but milder air is coming back and the warm autumn continues because this week so far, 17 on monday was the high temperature. 17 again on tuesday. wednesday saw 16 degrees and there is another push of milder air approaching from the atlantic around an area of low pressure, which is also going to bring the chance of rain and some windier conditions for a day and a night, anyway. this how we start thursday morning. you will be quite chilly across parts of southern scotland, northern ireland in northern england. we will see some clear spells overnight, also the far north of scotland, so there is a touch of ground frost possible. this area of rain in scotland weakening with the cloud as it pushes its way northwards again. for england and wales that will be a lot of cloud, mist and murk to begin with, some fog patches, poor visibility, drizzly in places and we will see a spell of rain pushing through northern ireland, parts of wales, northwest england on toward self with scotland today is the day goes on with the fresh wind in the west. these are average speeds, some gusts of around a0 miles an hour developing on the western coasts by the end of the day. but with that, the milder air is coming back into belfast at 1a degrees. it will start to creep northwards across scotland once again with this area of rain. and as we go on through thursday night, there will be a few spells of rain running into northern ireland and scotland, northern england, wales and a few patches of rain just starting to push a little further east across england as we go into friday morning. it is a mild night, mild start to friday. let's take a look at that area of low pressure. looks to be working across scotland during friday but of course the weather from around it will be impacting all of the uk. doesn't mean to say we're all get to see a huge amount of rain. the further south you are there willjust be a few splashes here and there. closer to that low pressure system through northern ireland but especially central southern parts of scotland and england the chance of seeing the heavier downpours on friday for the early rain on the far north of mainland scotland the rest of the day looks dry. it's a blustery day across the uk again, it's another mild one. into the weekend this area of low pressure will move away quite quickly allowing high pressure to build in behind but that settles the weather down again. it will become mainly dry over the weekend, there will be a lot of cloud around, sunshine at a premium regardless though, we have a mild weekend on the way. this is bbc news, the headlines: the united states and china have issued a rarejoint statement, saying they will step up their efforts to tackle climate change. the world's two biggest emitters of greenhouse gases said accelerated action and greater cooperation in the next decade would be decisive. the polish prime minister has accused belarus of committing "terrorism" over its role in an escalating border row between the two countries. thousands of migrants are stuck at the border in freezing weather, attempting to enter poland. the european union has also accused belarus's leader of provoking the crisis. a us teenager accused of shooting three people during black lives matter protests in wisconsin last year has taken the stand in his own defence. kyle rittenhouse broke down in tears as he claimed he was cornered by several men, and acted in self—defence. now on bbc news, it's hardtalk.