This episode looks at some of the mysteries of the number pi – approximated as 22 divided by 7 (22/7 or 22 July is celebrated as Pi Approximation Day), or roughly 3.14. What is pi, what makes it so special, and why does it turn up in some unexpected places?

Matilda is a science journalist at the Royal Institution of Australia’s Cosmos Magazine with a background in bioethics and microbiology.

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