What will aliens look like if we find them? Could a planet be entirely purple? Do skeletons have to be made of bone?

Rebekah King speaks to evolutionary biologist and science writer Wallace Arthur about his book ‘The Biological Universe, Life in the Milky Way and Beyond,’ which was published by the Cambridge University Press in 2020.

This is a Cambridge University Press Bookshop supported podcast.

Music by Coby O’Brien
Produced by Rebekah King

To find out more about the Festival, please visit: https://www.festival.cam.ac.uk/