welcome to bbc news, i'm simon pusey. our top stories: days after turning down money offered by the g7, brazil accepts foreign help to deal with the fires in the amazon. hong kong police arrest protesters and pro—democracy lawmakers. the crackdown continues, with a demonstration planned later on saturday now banned. as fires continue to burn in the amazon rainforest, brazil's military chief says his government is in talks with four countries offering help —

chile, israel, ecuador and the united states. the development comes just days after brazil rejected a previous offer of money from the g7 countries. more than 80 thousand fires have broken out in the vast rainforest so far this year. sophie long reports from para state, deep in the amazon. this was once lush rainforest, but now sparse land, a result of deforestation in the years gone by. but this year there has been a massive surge in the number of fires set to clear the trees and the landscape along the bau road that takes us deep into the jungle bears the scars of the blazes that are now threatening a whole way of life. in the bau indigenous village they are preparing for a naming ceremony for the latest addition to this tight—knit, traditional community. but as they prepare to celebrate new life, the village chief tells me the threat to his people is increasing with every day of jair bolsonaro‘s presidency. translation: if the president continues with his policies,

he will diminish indigenous lands so that he can confine us and exterminate us. that is what will happen. next year, the burning will be even bigger, but we will be here fighting, resisting. we are prepared to die fighting for our land because we are warriors that are not afraid of the brazilian government. as the fires continue to burn, the smoke continues to rise from the forest. in novo progresso there is a heavy haze all around. it is smothering the city and it's choking its children. carla te silver's three—year—old daughter has pneumonia. she is convinced she contracted it because of the smoke. she says if she doesn't get the right treatment, she could die. translation: the lives of our children are being jeopardised by people that don't have any sense. they're doing harm to other people, they're just thinking about themselves. it is something i don't

have words for. they do the damage and we are the ones who suffer, the children and their mothers. i asked the nurse on duty if children's lives are being put at risk. yes, she tells me, not just the children, it's dangerous for everyone. translation: this is a huge problem. if things keep going like this, unfortunately the consequences will be even worse than the ones we are already witnessing. even though it is not happening inside of our own homes, we are all living in this place. everybody here wants the smoke to go away. even when the fires have been put out, this is what remains — scorched earth, charred skeletons of trees. the dense rain forest that once stood here is no more, the species that lived in it are gone. all that remains is the flat, black land of deforestation and this has happened in more than 80,000 places across the amazon

this year alone. a number of prominent pro—democracy activists and politicians have been arrested in hong kong, in a sign that the authorities are taking an increasingly tough line. more street protests planned for saturday have been banned, as the unrest reaches its 13th weekend. from hong kong, here's john sudworth — there are some flashing images from the start of his report. past the waiting press pack, two of the best—known figures in hong kong's pro—democracy movement were swept into court. hundreds have already been detained in this summer of fury, as fears over chinese rule have led to increasingly violent clashes. but, with prominent members of the city's parliament also picked up, these latest high—profile arrests are being seen as much more political, a point made on the steps of the court after a successful bail hearing.

the level of media interest here speaks for itself. far from de—escalating the crisis, the arrest of this young man and others is only likely to fuel concern about the erosion of hong kong's freedoms and legal protections. we are strongly aware of how president xijinping and the beijing government are the ones who back and endorse hong kong police to conduct such mass arrests and prosecution. we hong kong people won't give up and won't be scared by these injustices. today, the police insisted that they are just following the law, threatening further arrests for anyone joining unauthorised protests this weekend.

meanwhile, chian has released more video of chinese paramilitary forces conducting anti—riot drills, although some pro—beijing voices say intervention is farfrom imminent. a bloomberg journalist is covering the protest in hong kong, he told us what to expect later today. well, the sense is that despite the fact that the officially authorised march ultimately did not get the authorisation it needed, that there is still a very wide motivation to come out today. the uncertainty is simply when and where it will start because we have a general location in terms of geography but it's still a very wide area and we simply don't know where or when things might happen. as i mentioned, the officially authorised march which the mainstream pro—democracy group, called the civil human rights front, they have been working on getting the required police permit for this. the decision was made on thursday that the police were going to object to this proposed march and then on friday, there was an appeal process and that appeal also failed,

so the march was essentially cancelled because this particular group says that its highest priority was to ensure the safety and legal safety of its participants so they said they would cancel but there is a sense that people will still come out and the organisation will mostly done online. it will be far more decentralised than what we're used to seeing, so the events of today are quite unpredictable. we're seeing some pictures now ofjust two of the high—profile arrests made yesterday. how will those arrests have an impact, do you think? i presume that you're talking about the two members of the demosisto party, joshua wong and agnes chow. they were arrested in the early hours of the morning and they faced a court mention in the afternoon and then they received bail. the particular group they represent during the period of detention said that the arrests were a way for two things. one to spread a sense of fear among

protesters in hong kong, and second, it was an attempt to assume or thrust leadership roles on these two people when they had no such leadership roles in these protests. let's get some of the day's other news. the bbc has uncovered evidence of a war crime committed during a recent airstrike in the syrian province of idlib, in which 39 people were killed. the attack by a plane from a russian airbase hit a market in the town of maarat al—numan twice in half an hour. moscow has previously denied that the attack took place. the long—term outlook for the great barrier reef has been downgraded from "poor" to "very poor" by the australian government agency that manages the world's largest coral system. a new report says rising sea temperatures, caused by global warming, have caused two major events of coral bleaching. fertilisers and pesticides getting in the water have also had an impact.

here in the uk, a former conservative prime minister has said he willjoin the legal fight to prevent his successor, borisjohnson, from suspending parliament. mrjohnson says those mps trying to block a so—called ‘no—deal‘ brexit undermine his chances of negotiating with the eu. vicki young reports. all: save our democracy... when it comes to brexit, feelings run high. while many in the country welcomed the announcement that parliament won't sit for five weeks, thousands took to the streets in protest. the government insists mps still have plenty of time to express their views. critics say borisjohnson is behaving like a tinpot dictator. when you became prime minister you talked about uniting

the country, but now you're talking about forcing through a no—deal brexit, something that you know democratically elected parliament does not agree with. you're being deliberately divisive, aren't you? we want to do a deal, i've talked over the last few days to lots of leaders around the eu. and everybody can see the rough shape of what needs to be done. it's going to take work, it's going to take a lot of energy for us to get there and the best way to do that is if our friends and partners over the channel don't think that brexit can be somehow blocked by parliament. the weird thing is... but they're trying to block no deal, they're not trying to block brexit, they're trying to block a no—deal brexit. the weird thing is that the more the parliamentarians try to block the no—deal brexit, the more likely it is that we'll end up in that situation. but now this former conservative prime minister says he will challenge mrjohnson in court. sirjohn major knows all about tory fights over europe, they plagued his time in office. today he offered to help campaigners make their case that the government is breaking the law.

that's one battle — the other will be fought in parliament. they'll have less time, but opposition parties and some tories will try to change the law to force the government to delay brexit again. to succeed, mps from several parties will need to work together, so are they confident? i'm always hopeful and i don't want to make predictions. all i know is that what we are trying to do is the right thing to do and i believe a majority of mps recognise that a no—deal exit is very damaging to our economy. meanwhile, ministers have promised to step up the tempo on talks with the eu, but ireland's deputy prime minister isn't sounding optimistic. at the moment, nothing credible has come from the british government in the context of an alternative to the backstop. you know, if that changes, great.

police in scotland have been dealing with what they describe as a large—scale disturbance in the city of glasgow, where a march for irish unity was met by a counter—protest. riot police, officers on horseback and a helicopter were sent to the scene in the govan area of the city. trouble flared when hundreds of people, reportedly from loyalist groups, turned out to protest against a march organised by an irish republican flute band. the twitter account of the site's co—founder and chief executive, jack dorsey, has been hacked. during the breach, racist remarks were posted by a group calling itself the chuckling squad. twitter says the account is now secure, and there are no indications that its own systems have been compromised. well, matthew hickey, who describes himself as an ‘ethical hacker‘ and trainer, told me how this breach happened. jack dorsey's sms spoofing attack

is a widely known issue that have failed to address over the last year whereby a person registers with the service and are able to two—factor their account so they used his phone number to smoother message due to be able to spoof a message to twitter, using his phone number sue for the authentication. a widely known issue. if you've linked your twitter to your phone they can access your account, they can use it to send messages on your behalf, and if they can use sim swapping they can leverage the same problem to access your account.

twitter has support for short code messaging, sms, and it can be abused by an attacker in this way by simply sending a spoofed text message. it does not appear the twitter customer data was impacted, but at this case it isa data was impacted, but at this case it is a known issue that twitter have continually failed to address, and we believe it is something they should look into with more detail and geta should look into with more detail and get a out there to protect people. if this technique is so widely used, how embarrassing is it for twitter and jack dorsey?m widely used, how embarrassing is it for twitter and jack dorsey? it is quite embarrassing. they have had this issue there, it has been known about, it could have been addressed about, it could have been addressed a long time ago, crowd sourced platforms like packer one, my colleague was able to use this attack and demonstrate to me how they could send a tweet from a deceased hacker‘s account. this technique is widely known, you can use this to spoof information from

authorised twitter users' accounts. for the general public out there i would advise them to disable their phone number, not link their twitter account of their phone number, and also speak with their sim card and telephone service providers about what they would do to prevent sim swapping, perhaps by enabling a pen oi’ swapping, perhaps by enabling a pen or service protection on their sim card. —— ten. this is bbc news, the latest headlines: days after turning down money offered by the g7, brazil accepts foreign help to deal with the fires in the amazon. hong kong police arrest protesters and pro—democracy lawmakers. the crackdown continues with a demonstration planned later on saturday now banned. a military court in the united states have set a trial date for kelly shaikh mohammed who is accused of playing a leading role in the september 11 attack. he will be tried in guantanamo bay in 2021.

peter bows in los angeles said the date had been a long time coming. it has been a logistical challenge, a legal challenge for almost all of these 20 years since 9/11. khalid sheikh mohammad was sent to guantanamo bay under the administration of george w bush, that was where the trial was going to be. then president 0bama tried to move the trial, he had a plan for it to take place in a civilian court in new york city, and prompted outrage, outrage from members of the public, there was a real outcry. a lot of complaints and eventually that was dropped. so the trial went back to guantanamo bay and those are some of the reasons why it was marked taken so long, but apart from that it is an extremely

complicated legal case. what is the news of the trial date from family members? this is of course the date that those family members have been wanting to see for a very long time. many will say it has been too long. in that respect it is welcome that the process is moving along because those memories of that day back in 2001 are still very acute for so many people. it was a momentous day, it was a tragic day for anyone living in the united states. it was the day that everything changed, the day that ultimately sparked the war with afghanistan and an entirely new attitude towards global terrorism. there is a sense that everyone just wants to get on with this. almost 3,000 counts of murder, practically, how can a trial like this take place? it's going to be difficult. and it's logistically difficult

but legally difficult as well in part because it is taking base in guantanamo. and we've got a mixture of civilian law and military law as well. so this won't be as straightforward as it might have been if it had taken place in a civilian court in the united states, and in particular new york. clearly that wasn't meant to be. so it is going to be difficult. the first stage will be jury selection and that of course, bear in mind, a very high profile case, feelings still running hig and people still having very strong memories of the day. the jury selection process in itself could take several months. the governor of florida has announced a state of emergency as hurricane dorian gathers strength. people say it might be the strongest hurricane to hit the east coast in nearly three decades. us national hurricane centre said it could cause

catastrophic damage. ramzan karmali reports. this was hurricane dorian, not at its peak, over the us virgin islands earlier this week. now it has strengthened into what the us national hurricane centre has called an extremely dangerous category 4 storm. by the time is expected to hit early florida next week, it will be generating wind speeds of 130 miles an hour. what really concerns me about hurricane dorian is the multiple threats, the storm surge, the wind, the tornadoes at landfall and particularly with this one, the rainfall. because what we think is going to happen is dorian is going to make landfall or hug the coast, slow down and gradually inch its way up the coast. that's a disaster, that's a recipe for major flooding. it is anticipated dorian will remain an extremely dangerous hurricane as it moves near the north—western bahamas and approaches the florida peninsula early next week. florida has declared a state of emergency.

we urge all floridians to have seven days' worth of food, medicine and water. this is potentially a multi—day event where it will churn slowly across the state and that obviously creates a whole host of issues. but if you are in an area that has an impact from the storm, you should assume you're going to lose power. and it seems people are listening to the warnings and getting prepared. they've been stockpiling water, food, fuel and materials such as plywood to board up properties. sandbags are being filled and collected. and though precautions are being taken, the region is still bracing itself for what could be the worst storm it's experienced in over a quarter of a century. ramzan karmali, bbc news. crossing lets cross over now to freeport on the island crossing ort on the island of grand bahama in the bahamas, which lies in the direct path

of hurricane dorian, and speak with kristoff strahn. how are you preparing for this storm? we are preparing pretty well. there have been long lines of water, —— for water, groceries. there has been long lines for lumber so people can properly secure their homes. it has been a little hectic but this isn't anything out of the norm for us isn't anything out of the norm for us here in the bahamas. isn't anything out of the norm for us here in the bahamaslj isn't anything out of the norm for us here in the bahamas. i hear you have been through eightjust another day for you? this will actually be number eight hurricane for me. this is as usual as far as life in the bahamas goes for us, especially in the northern bahamas. this is a particularly strong storm, though,. i know that you are on a slightly higher ground for the how are people protecting themselves and their

properties? the government earlier today assured mandatory —— issued mandatory evacuation orders for low—lying towns and some smaller islands so that residents on the smaller islands would be forced to go to the mainland and they can go further inland away from the storms surges. and the powerful winds. have better protection from that. a lot of people have been evacuating and those people that are in the interior of the islands that are away from the coasts have just been ensuring that their windows are properly secure from any flying object. i noticed that a lot of people have been doing last—minute repairs onto their roof. it has been a lot of construction and evacuation. in the aftermath of these hurricane, can you get around,

can you travel on roads? 0r these hurricane, can you get around, can you travel on roads? or is it a bit of a mess? it is generally a bit ofa bit of a mess? it is generally a bit of a mess. most of the hurricane ‘s have been extensive storm surge so that results in a lot of flooding. the flooding cuts of access to a lot of towns and in a lot of cases on many islands, residents in one town are completely isolated from all of the other residents because the flooding was so immense that they can't move around at all. typically after hurricanes, getting around can present itself as a challenge because of downed power but —— powerlines and power poles and because of the actual flooding. you seem pretty chilled about it. test of luck and thank you very much indeed for coming on. —— best of luck. this weekend will see the end of an era in paris. the demolition will begin of a huge housing estate on the edge of the city. but this was no ordinary

housing estate — it was built to glorify the ideals of communism, and it was named in honour of one of russia's favourite sons. the bbc‘s tim allman explains. stark, brutalist, very much of its era. these buildings were supposed to represent the future. now, they are to become a thing of the past. jacqueline spiro lived here for nearly 15 years. the memories of that time are still vivid. translation: going into these apartments, there was so much comfort. you had toilets, the bathroom inside the house, a real kitchen. considering that you were in the 1960s, it was modernity. today it may seem outdated but it was something new for me as a little girl. the graffiti tells quite a story. a clue as to why this place is known as gagarin city. the first man in space, yuri gagarin, inaugurated the state in 1963.

it was built by the local communist—led government, so calling him a hero of the soviet union seemed appropriate. translation: it was an extraordinary and popular moment. at that time, gagarin was a hero. it was, i would say, a form of victory for socialism that had defeated the united states. but now, nearly 60 years later, gagarin city is to be demolished. these buildings will disappear, but the memory of the man they were named after will endure. tim allman, bbc news. the actress, valerie harper, who co—starred on the mary tyler moore show, has died at the age of 80. she won four emmy awards, playing budding feminist, rhoda morgenstern, who battled her insecurities with humor and sarcasm

on the mary tyler moore show. following a brain cancer diagnosis in march 2013, she made a surprising comeback, competing on the dancing with the stars show two years later. hello there. once again we saw 25 degrees or so across the south—east of england, plenty of sunshine around, further north and west a lot more cloud and outbreaks of rain, in fact the last 2a hours have been very wet across scotland and northern ireland, thanks to this low pressure and this very active weather front which is slowly pushing its way southwards and eastwards all the while, as we head through saturday. so a very wet start in the north and west, temperatures though for most, even though it will be dryer further east, ranging from 12—15. through saturday this weather front will be slowly slipping its way eastwards like i mentioned, but it will be a dying feature, by the time it reaches the eastern side of the country there will be barely anything on it. but from friday through to saturday, a lot of rainfall across northern ireland and scotland, 20—50 millimetres over the high ground of northern ireland, and 50—80 perhaps across the south—west of scotland, particularly dumfries and galloway. minor flooding will be an issue

first thing on saturday, that front continues to journey eastwards, barely anything on it by the time it reaches the south—east. behind it skies brighten up, sunshine, a few showers around, those temperatures will be falling away. the mid teens celsius at best in the north for england and wales, 20—23 or 2a across the south—east. that is the last of the warmth because as that cold front moves through, it will allow cooler air to spread to all areas. clear skies during saturday night, there will be a few showers packing into northern and western areas, these will be blustery as the wind picks up too, notice the temperatures into single digits, particularly out of town, but even in some of the towns and cities further north. you can see we are into the colder air for sunday, sunday is the first of september, and the first day of meteorological autumn, it will certainly feel like that —

you wake up on sunday and it will feel very chilly. lots of sunshine around and showers will get going across scotland, northern ireland into north—west england, perhaps western wales, some could be heavy with a rumble of thunder mixed in, and it will feel quite chilly when the showers turn up. 12—15 in the north, 16—20 in the south. as we head on into monday, high—pressure wants to build in from the south—west, that will settle things down but you notice this weather front pushing into the northern half of scotland, that will bring more cloud to the north and west of scotland, perhaps outbreaks of rain for the northern and western isles, perhaps a few spots of rain for northern ireland too, but the further south and east you are, because of the high pressure, the winds will be lighter and we should see some sunshine around. so temperatures up a notch on monday, particularly noticeable across the south—east.

this is bbc news, the headlines:

as fires continue to burn in the amazon rainforest, brazil's military chief says his government is in talks with four countries offering help — chile, israel, ecuador and the united states. the development comes just days after brazil's government rejected a previous offer of money from the g7 countries. the hong kong authorities have intensified their crackdown on dissent in the region. police conducted a wave of arrest — among those being detained were the prominent pro—democracy campaigners — joshua wong and agnes chow. they've both been charged withjoining and inciting others to join an unlawful assembly. a us military court has set a trial date for khalid sheikh mohammed, who is accused of playing a leading role in planning the 9/11 attacks on the united states. he'll be tried in guantanamo bay from january 2021. he's already been detained for more than fifteen years.