In this edition: We hear from people tracking the spread of COVID-19, making better baby food, and designing for a move to Mars.

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News: Bee brains and tracking fireballs – We learn how certain pesticides are impairing baby bee brains, and how a network of cameras and volunteers across the UK are tracking fallen stars.

Counting coronavirus – How fast and how widely is COVID-19 spreading? We hear from epidemiologist Professor Azra Ghani about how they make sure they have the right data to build their models of the outbreak, and what that means for how we mitigate the spread.

Baby food entrepreneur – Business School alum Nadine Hellmann, who developed her idea for a new kind of baby food at Imperial, gives us tips on starting a business from scratch while studying.

Designing for Mars – Would you move to Mars? What do we need to do to make the move possible? Imperial scientists and students provide possible solutions, from space weather monitors to new materials for shoes.

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The podcast is presented by Gareth Mitchell, a lecturer on Imperial's MSc Science Communication course and the presenter of Digital Planet on the BBC World Service, with contributions from our roving reporters in the Communications and Public Affairs Division.