this is bbc news. the headlines: millions of people from australia to iceland are expected to skip school or work today to demand urgent measures to stop environmental catastrophe. the protests are planned in around 150 countries, and are likely to be one of the largest environmental demonstrations of its kind in history. the canadian prime minister, justin trudeau, has again apologised for wearing blackface make—up on several occasions, decades ago. he faces renewed pressure ahead of next month's general election after pictures and footage emerged. the rugby world cup isjust hours from starting, with japan the first asian country to host the competition. the world's top rugby nations are poised for the start of the cup, with the outcome as uncertain as any of the previous eight tournaments. after 32 years, john humphrys

presented his last today programme on radio 4 this morning. his no—nonsense interviewing style made him one of the most respected and feared journalists in the country. david sillito looks back at a career that saw him take on the great and the good without fear or favour. it's 6:00 on thursday 19th september... the final today forjohn humphrys. he was, for more than 30 years, the bbc‘s interrogator—in—chief. you are sitting here, in this studio now, talking on the radio... it was gladiatorial on—air combat, here challenging gerry adams of sinn fein. no, no, let me make this point. you, who i admire as a broadcaster... his terrier—like persistence helped define the political rules of engagement. i'm telling you things have changed, that's all. it's a manifest fact that things have changed. he left school aged 15 and started work as a journalist. the story that shaped

him was aberfan. he was the first reporter on the scene — 116 children killed when a coal tip subsided onto the town. he then joined the bbc, here truly in the thick of it in the indo—pakistan war of 1971. there's the big guns. there's a sabre just gone overhead. but the place he truly made his mark was today. take this in 2012. the bbc director—general, george entwistle, under fire after false allegations of child sex abuse in a newsnight report. what's happening here? the second this was brought to my attention last night, i immediately started... brought to your attention? do you not read papers? do you not look, do you not listen to the output? george entwistle resigned later that day. have you ever regretted going too far with a politician? oh, yes. oh, yes, yes, many times. many times. have you ever said sorry afterwards?

yes. interrupting is fine, interrupting is inevitable. unless you want a series of party political broadcasts, you have to interrupt. but when you get angry, which i have done once or twice, and i mean only once or twice, that is absolutely unforgivable. he has divided opinion, and he himself has noted that senior politicians are increasingly avoiding these encounters. but, at the end, what we got was a glimpse of the softer side ofjohn humphrys. i'm more proud than i can say that you have put up with me for so long. thank you. and that's it from me. good morning. david sillito, bbc news. now on bbc news, our world: the good struggle. bell tolls.

knocking.

singing.

bell tolls.

singing.

hello there. temperatures are set to climb over the next couple of days. friday morning will start off with some fog patches in places but that should tend to lift and clear fairly quickly and then we'll see a lot of sunshine and some real warmth as well. high pressure is centred just about here. you can see the winds rotating around it in a clockwise direction. the high pressure keeping the rain—bearing cloud at bay for the time being out in the atlantic. one or two fog patches across southern scotland. northern england could be the odd dense patch of fog,

some potentially for northern ireland as well but as we go through the day, any fog will lift and we will see patches of cloud drifting northwards but a lot of sunshine across most parts of the uk and temperatures widely between 19 and 22 degrees. but with the south or south—easterly winds blowing across the uk, the favoured spot for high temperatures will actually be the north of scotland, particularly when you get some shelter to the north of high ground. could well see 23 or 2a degrees. now, as we go through friday night, it's going to stay dry. there will be long, clear spells overhead. we'll see more of a breeze at this stage so i don't think there'll be too many problems with mist and fog and it's not going to be quite as chilly as some nights we've had recently. some spots holding up in double digits. 1a degrees there for plymouth, for example, dropping down to 9 in glasgow and newcastle. but for saturday, we have this feed of air coming up from the south

or the south—east. pretty warm wind direction, fairly humid as well. high pressure holding onto the first half of the weekend but notice these frontal systems out in the atlantic. these will eventually make their move and turn things quite a lot more unsettled. saturday then, the most reliably dry day for many parts of the uk. a lot of fine weather, lots of sunshine too but notice the odd thunderstorm late in the day through the south—west of england, parts of wales, maybe northern ireland as well. temperatures, though, 21 degrees in glasgow. the south—east of england could get to 25, maybe 26 degrees. through saturday night, though, there's the increasing chance we could see thundery downpours drifting across western areas ahead of this frontal system. it is a cold front. it could be moving erratically northeastwards as we move to sunday. some uncertainty about where it will come to rest with its outbreaks of rain for the afternoon but ahead of it, another warm day, 23 or 2a degrees but behind that cold front, the air turns colder. it will feel much cooler and much fresher and that leads us into a cooler, fresher week generally for all of us next week and there will be some

wind and rain at times. it is going to feel quite autumnal.

welcome to bbc news, i'm mike embley. our top stories: walkouts expected around the world. protestors prepare for global climate change strikes and demonstrations. we're live in sydney. trudeau under pressure. the canadian prime minister apologises again as more footage emerges of him in blackface make—up. it's crunch time in tokyo. japan is hours away from becoming the first asian nation to host the rugby world cup. the surgery that doesn't involve surgeons. we meet a nurse in ethiopia who is saving lives