Balloon manoeuvres
After North Korean balloons delivered trash to South Korea, we explore balloons of all kinds, why they can be useful, and when they\u2019re not.
Scientists have been using balloons for a long time, from pig bladders dropped from great heights, to Michael Faraday inventing the rubber balloon.
Floating through the air seems like a great, energy-efficient way to fly. So why isn\u2019t the sky full of airships?
And party balloons are fun\u2026 but do we want to waste our precious helium on parties? What is this limited gas worth saving for?
Also, why you\u2019re likely smarter than your grandparents were at your age, why snails climb up walls, and scientists looking at clouds from space.
Presenter: MarnieChesterton\nPanellists: Andrada Fiscutean, Meral Jamal\nGuests: Prof Andrea Sella (University College London) and Prof Dave Hodgson (University of Exeter)\nProducer: Florian Bohr with Harrison Lewis, Julia Ravey and Noa Dowling