I was just so grateful i was able to do it and ijust feel so happy and so relieved. It was emotional, as i expected, but i had a really good time. It was amazing. Its better than every other act thats ever come to pride. Im happy with that. Shes phenomenal. Absolutely phenomenal shes the biggest name ever to come to pride. The set wasnt long enough, we need more. Im not crying, it took too long, but im emotional on the inside. Many fans thought there would be an onstage announcement from Ariana Grande about her putting ob her own Manchester Show in the future, but there wasnt, meaning her performance at pride could be her last in the city for quite a while. Colin paterson, bbc news, manchester. Cheering great weather for Manchester Pride and festivals all over the country. Its officially been the hottest august Bank Holiday Weekend on record in england with temperatures reaching 33 degrees in london with that and todays forecast, heres Elizabeth Rizzini hello, thank you very much. Lots of us hello, thank you very much. Lots of us flocked to the beaches yesterday, this is hastings in east sussex, 33. 3 celsius yesterday in heathrow, probably seeing something similar here today. For western coastal areas today its a little bit cloudy, some mist already today, showers were devon and cornwall perhaps, some rain edging into the Western Isles by lunchtime. A cooler feeling day for much of scotland, wales and Northern Ireland but here in the south east, weve got 33 celsius once more. On monday night we have showers that are gradually going to track their way northwards into wales, the rain is across Northern Ireland, for many of us its going to stay dry and clear, uncomfortable night again for sleeping towards eastern areas and tomorrow, generally cooler and cloudy. The showers tracking their way north and east, heavy and thundery at times, the sunshine hanging on as will the heat towards south east england and east anglia tomorrow. Hello, this is bbc news with carrie gracie. The headlines. The International Response to the devastating amazon fires the g7 looks to make an emergency deal to help tackle the crisis. As the fires continue to spread brazil steps up its Emergency Response and deploys its military after concern that not enough was being done. President trump looks to calm growing fears over the us china trade war after telling reporters that the two countries will start negotiating. The Prime Minister tells the bbc to cough up and pay for tv licences for all over 75s, notjust those on low incomes. Now on bbc news. Nick miller and Sarah Keith Lucas round up the worlds most extreme and significant weather events of recent months, including record breaking heatwaves. Its time for weather world. This time on weather world. Its hot and it is getting hotter. Scientists predict more frequent extreme heat waves. We look at how rising temperatures affect how we live, work and travel. I will be investigating how extreme heat cripples our railways, and when travelling underground sometimes it seems like a test of human endurance. And im looking at how rising temperatures impact our homes, and what is being done to make them more heat resistant. And how the way we build homes can be much kinder to the environment. Also coming up. The worlds biggest storms and the destruction they bring. Landslides and flash floods as extreme rainfall becomes more common. And Freak Weather that brings hail as deep as snowdrifts. Plus, how rising sea temperatures are impacting wildlife around scotlands Shetland Islands. So sea temperatures are going up a bit, and just a small change in temperatures have a big impact on the food web. Summer in europe, but not as we have ever known it. A heat wave sees france shatter its all time record hitting nearly 46 celsius. And the extreme heat keeps coming in july, another heatwave and this time paris itself sets a new record along with new high temperatures in germany, belgium, the netherlands. And the uk. The city of cambridge records 38. 7 celsius. Climate scientists warn there could be worse to come as heatwaves become more likely and more extreme because of Climate Change. The baseline temperature has increased by abouti degrees globally since preindustrial times, and its that level thatjust means in normal conditions we would see heatwave conditions at temperatures around just above average, but you add that extra layer of heat on and thats when we start to break those records. And now one uk climate scientist has devised a new way of showing how much the world, and the parts of it we live in, have warmed. Climate stripes, a coloured stripe representing each year possibly average temperatures since the 1880s. These are the global stripes showing clearly how they progress from blue to red and left to right as temperatures have warmed over time. This is how australia looks, its the work of professor ed hawkins of Reading University who wanted to find a clearer way of communicating Climate Change. And with heat waves come wildfires, but scenes like this in the Arctic Circle are described by experts as unprecedented. There have been hundreds of fires from siberia to northern scandinavia, greenland and alaska. Injune alone its estimated that the fires released 50 megatons of carbon dioxide, the equivalent of swedens annual carbon output. And on the uks hottest day chaos on the railways downed power lines and broke down trains. It became almost impossible to travel long distances and this is what extreme heat can do to rail lines, its a problem not going anywhere as heatwaves become more extreme. To find out what can be done to keep us moving during heat waves ive come to a Heritage Railway here in essex. Weve been granted safe access to the tracks while trains are not running here. With me is calvin, a chartered engineer who has done a lot of research into this, hello. Tell us why railways, the metal in hot weather dont make a happy couple at times. Rails will expand in the hot weather and contract in the cold weather, so you have to cope with the expanding, if they expand they will force themselves together and they cant go anywhere, so then they buckle. Its a very dangerous situation. Yes indeed, you can have derailments. I got an example here of a rail, but i can see that there is little join in here and there is a gap. Now, what is that doing . When the rail expands that takes up the expansion, originally these to have 20 metre rails, and so there were regular gaps in the rails which would cope with expansion very well. But that was the problem mechanically because the wheels were hitting that gap in the rails, and causing a lot of maintenance problems and noises as well. They introduced continuous welded rail which is three times the length, but obviously that causes more expansion so you have to deal with that in a different way. Youre telling me in the old days we could deal with heat better than now . Yes. How did you get around that problem of long stretches of rail . When you put on the rail you stretch it so at 27 degrees it has no stress in the rail, so when it gets hotter youre putting less expansion in throughout because its already stretched and when it gets colder the rail will shrink, but you cannot have it shrink too much otherwise you get the rail cracking. Those sorts of temperatures are now being pushed to limits by how hot our heat waves are getting . Absolutely because at 27 degrees our previous weather patterns but now we are getting weather patterns 5 degrees more and so we perhaps need to review that. What are the things that can be done to keep things here as cool as possible . What they have been trying is painting the rails with white paint which reduces the temperatures by five to 10 degrees, but you also have the ballast which is another problem because they actually get hot in the sun as well. That causes the whole environment around the rail to be hot. Ultimately you want to try and keep the suns heat off of this environment and that is the key. Yes, stop it getting hot. Rather than dealing with it when it gets hot. Thank you. We will be back later on but now we shift our focus now to the underground Railway Network where if you have travelled on it it can get incredibly hot during heat waves and what can be done about that we will find out. Sarah theres a balance to be struck about Energy Consumption and new homes and how to keep them warm when the temperature drops and cool when it rises. A recent report from the uk committee for Climate Change said that homes are not fit for the future, and the quality and design had to improve to address the climate challenges. This huge residential tower block is currently being built in croydon. Ive come inside one of the completed apartments here within the tower blocks, and have come to meet john fleming, the chairman of these modular systems. Talk me through some of the major design features of this building. Its a 546 apartment building, and its 44 storeys high and is built with our modular system. So when you are designing Something Like this, how much at the forefront of your mind is Climate Change and specifically the rising temperature . Climate change is always a major issue. Overheating is the real problem and in apartments in london currently. This is a very busy building site and theres lots of traffic too. Its really quiet here in the apartment so well soundproofed. Talk to me about the walls and how they work in terms of the insulation. The external wall is made up of two fireboards in the inside for Fire Protection and then we have 200 mm of insulation, and then we have a fire board again on the outside and then we have a cavity and the we have the external cladding finish which in this case is a terra cotta finish. They gives us very good energy value in the wall but not alone does it give us a good energy value but a very good other value. Like sound. The external wall is noncombustible. Its contributing a lot to the overall standard of the building. We just recently recorded the highest temperature ever in the uk but also as you were saying temperatures can get quite cold in the winter as well so how do you balance keeping things warm enough in the winter and cool enough during the summer . Temperature change is quite small. For instance last week when it was 36 degrees here outside it was probably 20 or 21 degrees inside without any artificial cooling. In the winter we would expect the reverse to happen when its zero temperature outside, we would expect to be 15 degrees minimum inside and the important issue with Energy Values nowadays is to cool a building it takes three times the amount of energy that it does to heat a building. And its not just about the materials youre using here with the glass and insulation but also about the manufacturing process, and a little bit later in the programme well be taking more of a look at that process of construction of this modular tower block. Nick we are Getting Better at building homes to withstand severe weather. But sometimes weather is just too wild. Cyclone foni batters the east coast of india. In the capital the crane was brought crashing down severe wins, this was the strongest cyclone to hit here since 2013. In the usa, the first hurricane of the season is barry, hitting louisiana injuly bringing flash floods to new o rlea ns. In august, this typhoon hits eastern china, buildings are swept away in severe flooding that follows and more than 50 people are killed. Still in china, and a terrifying moment of a landslide hitting the road in this province in june. One man was rescued, but later died from his injuries. Greece injuly, and tourists try to shelter in a hotel bar as Violent Storm slams here in the north of the country. Seven people, including six tourists were killed as the storm swept through the area. Look at the size of that in the uk it has notjust been record heat, but severe storms and flash flooding. These scenes at the end ofjuly as roads become rivers after a months worth of rain fell in just four hours. And catastrophe avoided in derbyshire as the heavy rain leads to collapse of part of the dam, urgent repairs make it safe but in any time more than a thousand people in nearby Whaley Bridge had to leave their homes. Earlier, injune, there were days of heavy rain as this river burst its banks, millions of litres of water were unleashed flooding the town on a scale not seen in living memory. Time for some weather watcher pictures. Onjuly the 25th, when temperatures soared to 38. 7 celsius in cambridge. Scientists warned it may only be a matter of time when the uk hits a0 degrees the first time. Show us the weather where you are by becoming a bbc weather watcher and get set up online at the bbc. Still to come on weather world. All at sea, matt taylor looks at the impact of rising sea temperatures around scotlands shetland isles. And could answers to heatwave hell on london public underground actually lie overg round . This time on weather world, were looking at rising temperatures and how they impact how we live, work and travel. I am inside what will be, when completed, the worlds tallest modular tower block, earlier we looked at some of the materials used in this tower block, but nowjohn willjoin us again to explain a little bit about the concept. John, tell me about this off site manufacturing process of this modular build. Off site manufacturing is what we do in our bedford factory, we use conventional Building Materials and assemble them in a factory environment, and on the carousel that moves around a factory, so we use Much Less Energy in doing so. Then they are transported to site in a truck and erected on site. So once complete there will be 546 apartments in this block, so how many modules is that . Thats 1,520 modules, a typical one bed apartment is two modules. The apartment we are currently in has a living room which is one module and second module has a kitchen, a bathroom and a bedroom as part of one module. So on site they are 95 completed when they come to site, and then it takes two men for a couple of days to tidy them and put them together. So when we are thinking about Climate Change and environment of sustainability what makes this sort of system more environmentally friendly than conventional building . Its much more environmentally friendly because it is factory assembled. The method has a 80 saving on waste, we recycle 97 of waste. So all of that efficiency plus the transport to site leads to a 50 reduction in co2. 50 reduction in co2, that is a huge saving. Where do those savings come from . Its a build up of much more efficient method of construction in a factory environment. Much less use of energy and the less waste we spoke about, and of course the vehicle movements aside which is 80 of normal vehicle movements. Thank you for showing us around your latest project. Thank you, sarah. It is notjust warming up on land, but at sea as well. Research shows the temperature across the north sea has risen to 1. 5 degrees in the last a0 years and thats affecting fishing around scotlands Shetland Islands as matt taylor has been finding out. Fish that have been traditionally caught in these waters for generations are moving towards colder seas further north. Meanwhile, fish preferring warmer waters are starting to thrive around shetland. Alan has been fishing these waters for 38 years, and in that time hes noticed a lot of changes. A lot more cod ten or 15 years ago you would not have seen it. You see big changes in varieties . We are trying to get velvet crab, a lot less of them around and more lobsters. So probably when one moves in another moves out. The climate is massive. A lot of people blame overfishing but one of the biggest things is natural causes. Changes around shetland make it tougher for the islands most popular sea birds. Hello, helen. The rspb say its a sharp decline here in the number of puffins. Since 1981 is in a 90 decrease in the number of these alone. What he think the main factor is behind those numbers . Availability. The sea temperature just goes up a bit and just a small change in temperature it has a big impact on the food. They go as far away as montrose, and thats hundreds and hundreds of miles and it would be like me going to glasgow to get my tea and now back in time to what seems like another world. A London Underground poster from the 1920s suggesting that to escape a heat wave above ground you would find it much cooler below ground. Fast forward almost a century and anyone who travels londons tube network now knows the trains deep underground can become unbearably hot in a heat wave. It is so unbelievably hot down here, and the bakerloo line is by far the worst of all the lines. Actually it makes you feel ill. More fans and cooling systems using ground water are being put in place to try to make a difference. To find out why it gets so hot on the underground work to be done about it i have taken a step back in time here at the railway to a classic underground carriage built in the late 1950s and withdrawn from service around 2000, this train has carried a lot of passengers in its time and with me again is calvin, a chartered engineer looking into all of this and you have your own ideas about how to solve this problem, why do you think it gets so hot in the underground network . Well, most people think its the underground section that is hot, but actually the train gains more heat on the surface, for example when i was travelling on the central line between epping on the surface at 430 or five oclock in the evening, the temperatures rise significantly. Youre talking about the lines that start overground and then go underground. Why is that . Its like a car, when the sun shines on your car, the bodywork gets hot and thats not a problem because the air conditioning but as soon as you carry that heat into the tunnel its like a massive storage radiator. What can be done about that . For the bodywork you paint it with solar reflective paint. The Australian Navy have done this with their warships in the same battleship grey and they have actually reduced the surface temperatures by 15 to 20 degrees. You are still going to get the sunshine into the windows. Absolutely, but if you still put solar reflective glass here and reduce it by 84 coming threough down to 4 per cent. Thats why the London Underground was marketing itself as a place to go to keep cool during a heat wave. If you take the Glasgow Subway you can go down there and keep cool because its all underground. What happened in the early years of the London Underground it was an underground section only and they decided to it to extend it to the suburbs on the overground and thats when they started to develop a problem. Greenhouse effects then. Absolutely. Good to talk to you and hear your ideas about getting to grips on heat on underground trains. If it is not heat causing problems its flooding. In india, injuly, mumbai sees its heaviest monsoon rains in a decade. And later in the month, more than 1,000 people had to be rescued from this train as it became stranded in a flood. This years monsoon came late but still produce significant and deadly flooding. The tornado sirens are blaring here. You need to move. You need to move right now, that is coming straight at you. In may, the usa breaking numbers for more consecutive days with at least eight tornadoes. And if one tornado is bad enough, this twin twister was caught on camera during the same outbreak. The same storms bring flash flooding to oklahoma leaving these homes teetering on the edge of the flooded river. A tornado over water looks like this, and it is called a waterspout, amazing video of one off the coast of the mediterranean island of corsica injuly. Waterspouts tend to be weaker than land based tornadoes. Germany, injune, and take cover if you can as this boat is caught in a powerful hailstorm and a bavarian lake. You think you would be safer in a car, but not when the hail is this big. Cracks appear in the windscreen of this car in a storm in france. And now, to snow. But hold on, theres someone there in a sleeveless top so it cannot be cold, because this is summer in the mexican city of guadalajara. This is actually the aftermath of a massive hailstorm, more than a metre deep in places, when it comes to hail it does not get much more freak than this. This though, is snow, and yes these are kangaroos. The two are not often seen together but these scenes come from australia and New South Wales in august, with the most severe winter storms here in years. Three, two, one. We have lift off. Sarah and finally, in the year of the 50th anniversary of the moon landings, could mars be the next giant leap for humankind . If so, its good to know what weather we can expect. Elizabeth introduces us to an average day on the red planet. Mars has weather, but not as we know it. The atmosphere is around 100 times thinner than that of earth so when winds whip up on the martian surface reaching 100 mph it feels like a gentle breeze. You dont need an umbrella on mars either, and it hasnt rained for millions of years but martian snow, high up in the atmosphere is not completely out of the question. Now, another summer day awaits us in the southern hemisphere, set to warm up significantly after an overnight low of 80 celsius, temperatures will climb rapidly to a balmy 20 celsius. Around midday and thats a dazzling range of 100 degrees. By contrast, in the Northern Hemisphere winter is biting hard and close to the north pole, the daytime high will be only minus 125 celsius, meanwhile on the equator its warmer, 21 celsius and good visibility in sunshine and warnings of moderate radiation around the gala crater. And back on here on earth, its the end of another weather world, but you can find more on line including highlights of our previous episodes at bbc. Co. Uk weatherworld. Look out for another weather world later in the year. Whatever the weather, keep checking the forecast. Hello, good morning. Temperatures peaked in london yesterday at 33. 3 degrees, the warmest late august Bank Holiday Weekend. Similar conditions expected today for much of the south east of england, east anglia, more sunshine and still feeling warm indeed. Showers for parts of devon and cornwall, rain edging into the Western Isles and cooler for much of scotland, Northern Ireland, and for wales as well. The heat hanging on in south east england. On monday night, uncomfortable night for sleeping again, towards the east, showers pushing into wales in the south west, the rain over Northern Ireland, spells of heavy rain and wet weather here as we head into tomorrow morning. Weather front continuing its journey east, tomorrow morning. Weather front continuing itsjourney east, some heavy under each showers tomorrow, tracking their weight north east roots, generally cloudy and cooler, the heat and sunshine lasting towards the south east of england, temperatures nudging 30 degrees. The International Response to the devastating amazon fires the g7 looks to make an emergency deal to tackle the crisis. As the fires continue to spread, brazil steps up its Emergency Response and deploys its military after concern that not enough was being done. The Prime Minister tells the bbc to cough up and pay for tv licences for all over 75s, notjust those on low incomes. Ariana grande plays Manchester Pride, telling fans including survivors of the 2017 terror attacks that shes overwhelmed to be back