street party kicks off its final day at the notting hill carnival in west london. nasa has cancelled today s launch of its most powerful rocket, artemis one, which had been due to take off for an uncrewed test flight to the moon. the us space agency said one of its engines had developed a bleed that couldn t be fixed in time; the next possible launch date is friday the second of september. the artemis programme aims to return humans to the moon. if successful, the plan is for astronauts to be on board the flight in two years time. our science correspondent, jonathan amos told us what went wrong. frustrating day today, ben, it really was. we had a number of little issues that cropped up. first of all, when we got here, it was pouring with rain and that delayed them tanking, putting all the propellants that they needed to go in this monster rocket over my shoulder. then they thought they had a crack halfway up the rocket, believe it or not, and decided that that was just frosti
then with more at 4:15 p:m.. vaping has risen rapidly over the past decade to reach record levels in great britain with an estimated 4.3 million people who are regular vapers, according to a new report. action on smoking and health, which produced the report, said a vaping revolution has taken place over the past decade. joining me now is a vaping expert and professor of public health at the university of edinburgh, linda bauld. good to have you with us once again. is this good news or bad news, the the evading revolution? the evading revolution? there are alwa s the evading revolution? there are always two the evading revolution? there are always two sides the evading revolution? there are always two sides to the evading revolution? there are always two sides to this the evading revolution? there are always two sides to this debate. l the evading revolution? there are l always two sides to this debate. we just start with smokers and recent ex smokers. those of the groups th