In this edition: How we shop now and in the future, the fluid dynamics of chocolate and how sequencing thousands of genomes is improving medicine.

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News: Volcanic mush and the sound of Mars – We find out what really underlies volcanoes, and hear the first ever sounds recorded on Mars.

Shopping habits – Is the high street dying? Will we all shop with voice technologies and get recommendations in-store using facial recognition? And what does this mean for our privacy? We explore the future of shopping.

The maths of chocolate fountains – At the recent Xmaths Imperial Lates event, one of the most popular displays was a metre-tall chocolate fountain, which mathematicians used to share the importance of fluid dynamics.

Genomic medicine in action – We hear about the Imperial College Academic Health Science Centre’s contribution to the 100,000 genomes project, and how it is already providing benefits to patients with rare blood disorders.

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The podcast is presented by Gareth Mitchell, a lecturer on Imperial's MSc Science Communication course and the presenter of Click Radio on the BBC World Service, with contributions from our roving reporters in the Research Communications group.