Episode details
Radio Wales,3 mins
How many balloons would it really take for Roald Dahl's Mrs Twit to lift off?
Science CafeAvailable for over a year
John Rutledge investigates the science behind Roald Dahl's stories
Programme WebsiteUse BBC.com or the new BBC App to listen to BBC podcasts, Radio 4 and the World Service outside the UK.
Radio Wales,3 mins
Available for over a year
John Rutledge investigates the science behind Roald Dahl's stories
Programme Website