thank you, doctor daniel kammen, _ well off. thank you, doctor daniel kammen, for - well off.orjoining well off. thank you, doctor - daniel kammen, forjoining us. you can find out more about the links between extreme heat and climate change on our website. there's this video on why it's so hot in europe at the moment. russia's defence minister has ordered all forces to step up operations across ukraine. sergei shoigu said it was to prevent attacks on the occupied east of the country. it comes as russian missiles struck cities right across the country, including at a space rocket and satellite 0ur defence correspondent, jonathan beale, has this report. 0n ukraine's eastern front, they're about to target russian positions. this time, using american—supplied howitzers and ammunition. ukraine's still vastly outgunned. these help but they can't hang around. western weapons like this have given ukraine an advantage in terms of accuracy and range, but they've also become high—value targets, with russia trying to hunt them down. they prepare to move out quickly before they become the

professor daniel kammen, earlier. let's get some of the day's other news.sked officials to check whether he has the authority to declare an abortion—related public health emergency. he's under pressure from fellow democrats to do more to protect abortion rights following last month's supreme court ruling, which handed individual states the right to ban abortion. police in south africa are trying to trace the gunmen responsible for a shooting at a bar in which 15 people died. nine others were wounded in the attack, which happened in the township of soweto. president cyril ramaphosa, has said he cannot allow violent criminals to terrorise people. japan's governing coalition of the liberal democrats and komeito appear to be on track to increase their majority in the upper house following sunday's election. the result would strengthen prime minister fumio kishida's aim to reform japan's pacifist post—war constitution — the ambition of his predecessor, shinzo abe, who was assassinated on friday. last—minute negotiations are continuing at the united nations to tr

dr daniel kammen is a professor at the university of california, and a climate change adviser to variousstrations over the last twenty years. here he is explaining what a double jet stream is. what we have are two high velocity streams of air, one in shetland and one south in portugal and that really helps to trap the heat and what it causes essentially is an amplification of the already heated climate that we are in, more than 1 degree celsius higher than we should be, is causing our is a focus, or a furnace if you will, over western europe and we have now been seeing this for decades. unfortunately, we expect to see it continuing as climate change gets worse and worse. as you mentioned, not for the first time we're being told this extreme weather events will be more common and more extreme. what does the latest science say about how bad these are going to be? two factors going on, one is the overall heating and the second thing is that western europe is in the crosshairs of the band of extra heat. this is work that has been going on for some time. there has been some new important pape