colleague news. we willjoin my colleague christian fraser shortly for continuing coverage of this vital climate summit in glasgow, cop 26. this is bbc news. i am christian fraser, live at the glasgow climate change summit. borisjohnson welcome to world leaders with a speech morning younger generations will remember if they don't act now. it remember if they don't act now. if we remember if they don't act now. it we fail, they will not forgive us. they will know that glasgow was the historic turning point when history failed to turn.— historic turning point when history failed to turn. president biden says the fi . ht failed to turn. president biden says the fight against _ failed to turn. president biden says the fight against global— failed to turn. president biden says the fight against global warming i failed to turn. president biden says the fight against global warming is| the fight against global warming is a moral imperative and an economic opportunity. but the chinese and russian leaders are not attending. you in a scientists say extreme weather events are the new normal.