Taylor Swift fans danced so hard they made the ground shake at her recent Edinburgh gig so this week we’re meeting Earth Scientists Emma Greenough and James Panton to measure the Cardiff show - and explain some Swiftie Seismology. We’re joined by the BBC’s disinformation and social media correspondent Marianna Spring and Cardiff University's Professor Martin Innes to talk the science of tracking election disinformation on social media. What’s in the election manifestos? BBC science correspondent Pallab Ghosh explains all. And Marnie dashes to Kew Gardens to meet horticulturalist Solene Dequiret, hoping to be in time to see two very foul-smelling plants in very rare bloom. Nose pegs at the ready... Presenter: Marnie Chesterton Producers: Gerry Holt, Katie Tomsett & Ella Hubber Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth