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After a number of incidents around the world so far this year that have left dozens of flyers needing hospital treatment, we look at how a rise in air turbulence because of global warming is leading to more and more injuries to passengers.

Professor Paul Williams from the University of Reading in the UK tells us why turbulence is so hard to plan for, how new technology might be able to help solve the problem, and how despite an increase in incidents it\u2019s still incredibly rare to experience extreme turbulence./

Claudia Hammond is also joined by Monica Lakhanpaul, Professor of Integrated Community Child Health at University College London, to look at how a shortage of HPV vaccines is leading to millions of girls across Africa missing out on receiving the shots.

Monica also tells us about her new research on the barriers children with epilepsy are facing being able to exercise.

We also explore what it\u2019s like for people that don\u2019t have an inner monologue and can\u2019t imagine sounds \u2013 a phenomenon known as anauralia.

Presenter: Claudia Hammond\nProducer: Dan Welsh